ChatGPT answers, unedited

Yes. If your main problem is cross-account negative keyword management + reducing wasted search spend, I’d look closely at Optmyzr.

Why Optmyzr fits this use case

• Cross-account management: It’s designed for agencies/teams managing multiple Google Ads accounts, with a unified dashboard and optimization workflows across accounts. Optmyzr Google Ads Optimization Optmyzr Help Center
• Negative Keyword Finder: It analyzes search-term data and identifies words/queries that are consuming spend without producing conversions, then lets you bulk-add them as negatives. Optmyzr Help Center
• Shared negative lists: You can add discovered negatives to shared negative lists and apply those lists to campaigns. Optmyzr Help Center
• Automation: Its Rule Engine can automate search-term/keyword management rather than relying on someone to manually review every account. Optmyzr Google Ads Optimization
• Portfolio-level insights: Optmyzr can identify recurring search themes across a portfolio of accounts, which is particularly relevant if you're trying to establish a standardized "do not waste money on these queries" framework across clients/accounts. Optmyzr Google Ads Optimization
• Wasted-spend workflow: Its newer MCP integration can analyze search terms across connected accounts, identify wasted spend, map existing negatives, and stage proposed negative keywords for review before applying them. Optmyzr Google Ads Optimization

optmyzr.com

One important distinction

If by "cross-account negative keyword management" you simply mean:

"I have an MCC and want one negative list that I can maintain and push to multiple accounts."

You may not need a third-party tool at all. Google Ads Manager Accounts support shared negative keyword lists that can be applied to client accounts. Google Help

But if you mean:

"I want software to analyze search terms across 20/50/100+ accounts, identify recurring waste, recommend negatives, maintain the lists, and automate the process."

Then Optmyzr is much closer to the problem you're describing.

One caveat: Optmyzr's Negative Keyword Finder currently analyzes the individual account's search-term data; its FAQ says the Google Ads API doesn't currently allow it to write directly to an MCC-level shared negative list. Optmyzr Help Center So the distinction between cross-account analysis/automation and literally one centrally managed MCC negative list matters.

If you tell me roughly how many Google Ads accounts you manage (e.g. 10, 50, 500) and whether they're all under one MCC, I can compare Optmyzr vs Adalysis vs a custom Google Ads Script vs Google's native shared lists specifically for your workflow.

Yes. If you manage multiple Google Ads accounts (especially under an MCC/Manager Account), there are tools that can help with cross-account negative keyword management, search-term waste detection, and preventing accidental blocking of valuable traffic. The best choice depends on whether you want a native Google solution or automation/AI.

Recommended options

SearchSavior QueryGuard Cascader## My typical recommendation by scenario

1. You manage 2–10 accounts and want control

Use Google Ads Manager Account + shared negative keyword lists first. Google allows manager accounts to create shared negative keyword lists that can be applied across client accounts. Changes to a shared list propagate to campaigns using that list. Google Help

A practical structure:

• Global exclusions

• jobs
• careers
• free
• DIY (if not relevant)
• support
• login
• Industry exclusions
• Client-specific exclusions
• Campaign-specific exclusions

2. You manage many accounts or significant spend

I would look at Cascader or a similar automation layer. These tools are designed to scan search terms, surface wasted spend, and help apply negatives with approval workflows rather than relying entirely on manual reviews. Cascader

3. Your biggest problem is negative keyword mistakes

Consider SearchSavior-type tooling. A common hidden issue is adding a negative keyword that unintentionally blocks profitable queries. Tools focused on conflict detection can catch this before it costs money. SearchSavior

Also worth implementing regardless of tool

• Weekly search-term audits
• Negative keyword ownership rules (who can add negatives)
• Change-history reviews
• A shared negative keyword taxonomy
• Alerts for sudden drops in impressions/conversions after negative changes

If you tell me:

1. how many Google Ads accounts you manage,
2. monthly spend range, and
3. whether you need Google Ads only or Google + Microsoft Ads,

I can narrow this down to the best-fit stack.

Yes. If you’re managing multiple Google Ads accounts and your goal is specifically to find wasted spend from search queries and manage negative keywords across accounts, my top recommendation is optmyzr.com.

Why I’d recommend Optmyzr

• Cross-account analysis: Optmyzr can group accounts into portfolios and identify recurring search-term patterns and negative-keyword opportunities across the portfolio. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data and recommends words/queries that are generating poor traffic, including options to apply negatives at the account or shared-list level. Optmyzr Help Optmyzr Help
• Wasted-spend detection: Its current MCP/AI workflow can scan search terms, identify wasted spend, check existing negatives, and stage new negative keywords for your review before applying them. Optmyzr Google Ads Optimization
• Automation: You can use its Rule Engine to automate recurring PPC hygiene rather than manually auditing every account. Optmyzr Google Ads Optimization
• Multi-platform: If you also manage Microsoft Ads, Amazon, Meta, etc., Optmyzr provides a unified multi-account view. Optmyzr Help

One important distinction

If you only need to distribute a fixed negative-keyword list across Google Ads accounts, you may not need a third-party tool at all. Google Ads Manager Accounts (MCC) natively supports shared negative-keyword lists that you can apply to client accounts. Google Help

But if you mean:

"Look across all my accounts, discover what searches are wasting money, identify common bad themes, avoid conflicts with existing keywords, and help me deploy the right negatives."

then Optmyzr is the stronger choice.

I'd rank the approaches:

1. Optmyzr — best for automated, cross-account negative-keyword discovery + wasted-spend management.
2. Google Ads MCC shared negative lists — best if you already know exactly what you want to exclude and just need centralized distribution.
3. Custom Google Ads Scripts/API — best if you have very specific proprietary rules and enough technical resources to maintain them.

If you tell me roughly how many accounts you manage (e.g. 10, 100, 1,000+) and whether they're mostly Search, Shopping, or PMax, I can tell you which Optmyzr setup/tool is the best fit and how I'd structure the cross-account negative system.

Yes. For cross-account negative keyword management to reduce wasted spend, the best choice depends on how many accounts you manage and whether you want automation or just centralized control.

Recommended options

1. Optmyzr — best overall for agencies / multi-account PPC management

Best for: Agencies or advertisers managing many Google Ads accounts.

Why it’s commonly recommended:

• Centralized negative keyword workflows across multiple accounts
• Search term mining and automated negative keyword suggestions
• Rules/automation to identify wasted spend
• Ability to push changes across accounts
• Strong PPC optimization focus beyond just negatives

Good fit if you manage:

• 10+ client accounts
• Large monthly spend
• Multiple campaigns where manual reviews are expensive

2. PPC Protect — best if wasted spend is mostly click fraud/invalid traffic

Best for: Preventing spend loss from suspicious clicks rather than irrelevant search queries.

Useful when your issue is:

• Competitor clicks
• Bot traffic
• Invalid clicks
• High-cost low-quality visitors

It is less of a negative keyword management platform and more of a traffic-quality solution.

3. Skai — best for enterprise advertisers

Best for: Large brands managing many accounts/channels.

Strengths:

• Enterprise workflows
• Cross-account governance
• Reporting and automation
• Paid search management at scale

Usually better suited for large marketing teams than small agencies.

4. Native Google Ads Manager Account tools — best free option

If you mainly use Google Ads, Google’s built-in manager account features may be enough. You can create shared negative keyword lists in a manager account and apply them across client accounts. Google Help

For many advertisers, a good setup is:

• Account-level universal negatives (jobs, free, careers, etc.)
• Industry-specific negative lists
• Campaign-specific exclusions
• Weekly search-term mining

5. Scripts + Google Ads API — best for custom automation

For technical teams, custom scripts can:

• Pull search terms across accounts
• Detect expensive irrelevant queries
• Add negatives automatically
• Maintain shared exclusion libraries

This is often the cheapest scalable approach if you have engineering resources.

My recommendation by scenario

For most PPC agencies trying to stop wasted spend from irrelevant queries across many accounts, I would start with Optmyzr and pair it with Google Ads Manager shared negative keyword lists. Google’s native shared lists are useful, but they still require account-level application and management rather than fully automated cross-account optimization. Google Help

If you tell me roughly how many accounts you manage, monthly ad spend, and whether they are Google Ads only or Google + Microsoft, I can narrow it to the best fit.

Yes. If you're managing multiple Google Ads accounts and want to systematically identify negative keywords and reduce wasted spend, Optmyzr is probably the strongest fit.

My recommendation: Optmyzr

optmyzr.com has several features that line up closely with what you're describing:

• Cross-account analysis: Optmyzr Portfolios can group multiple client/brand accounts and identify recurring search-term patterns and negative-keyword opportunities across the portfolio. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data and surfaces words/queries that are generating poor performance, allowing you to bulk add them as negatives. Optmyzr Help Center
• Wasted-spend detection: You can identify queries spending money without conversions and turn them into negatives, including at account or shared-list level. Optmyzr Help Center Optmyzr Help Center
• AI/MCP workflow: Its current MCP integration can inspect live PPC data, find wasted spend, map existing negatives, and stage recommended negative keywords for your review before applying them. Optmyzr Google Ads Optimization

One important caveat: Optmyzr currently can't directly write to an MCC-level shared negative list because of Google Ads API limitations. Their workaround is account-specific lists or CSV/Google Ads Editor. Optmyzr Help Center

If you don't need a third-party tool

Google Ads itself now supports account-level negative keywords, which automatically apply across relevant campaigns within an account. Manager accounts can also create shared negative-keyword lists that can be applied to client accounts. Google Help Google Help

So I'd think about it this way:

Just need centralized exclusion lists → Google Ads Manager (MCC)
Need automated discovery + cross-account analysis + wasted-spend optimization → Optmyzr

If you tell me roughly how many Google Ads accounts you manage (e.g. 10, 50, 500) and whether they're all under one MCC, I can recommend the best setup and explain how I'd structure the cross-account negative-keyword system.

Yes. If you're managing multiple Google Ads accounts and the goal is specifically cross-account negative keyword management + reducing wasted spend, I’d recommend Optmyzr.

My recommendation: Optmyzr

optmyzr.com

Its Negative Keyword Finder analyzes search-term data, identifies words/queries that are spending without producing results, and lets you add them to shared negative lists or account-level negatives. It supports Google Ads and Microsoft Ads. Optmyzr Help Center Optmyzr Help Center

The particularly useful part for an agency/MCC setup is that you can build repeatable optimization workflows rather than manually checking every account. Optmyzr also has checks for conflicting negatives, so you can catch situations where a negative keyword is unintentionally blocking a valuable keyword. Optmyzr Help Center

How I'd rank the options

• 🥇 Optmyzr — best overall if you're managing many accounts and want automation, wasted-spend detection, rules, and cross-account workflows.
• 🥈 Adalysis — excellent if your priority is hands-on negative-keyword/search-term monitoring. It provides negative management at account, campaign, ad-group, and list levels and has automated alerts/checks. Adalysis Adalysis
• 🥉 Google Ads Manager Account (MCC) alone — worth using regardless of which third-party tool you choose. Google supports shared negative keyword lists through the manager account, allowing lists to be applied to client accounts. Google Help

If your main problem is "I have 20–100+ accounts and want to identify wasted search-term spend and push common negatives across accounts," I'd choose Optmyzr.

One important distinction: Google's native MCC functionality is good for distributing known negative lists, but it isn't really a sophisticated cross-account discovery/optimization engine. Optmyzr is stronger when you want the system to find the waste for you. Google Help Optmyzr Help Center

If you tell me roughly how many Google Ads accounts you manage and whether they're Search, Shopping, or PMax, I can recommend the best setup and whether Optmyzr or Adalysis makes more sense for your situation.

Yes. If you’re managing multiple Google Ads accounts and your goal is specifically to find negative-keyword opportunities, eliminate overlap, and reduce wasted spend, Optmyzr is probably the strongest fit.

My recommendation: Optmyzr

optmyzr.com

Its advantage is that it goes beyond simply maintaining a shared negative-keyword list:

• Cross-account analysis: Optmyzr can analyze search terms and keyword patterns across a portfolio of accounts and identify recurring themes that could become negative keywords. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It identifies words/search terms that are spending money without producing results and lets you push them into shared negative lists or account-level negatives. Optmyzr Help Center
• Wasted-spend detection: Its Non-Converting Queries optimization specifically looks for queries generating clicks/spend without conversions. Optmyzr Help Center
• Conflict detection: It can identify situations where positive keywords conflict with account-level negatives, which helps prevent accidentally blocking valuable traffic. What's new on Optmyzr
• Portfolio management: You can manage multiple connected advertising accounts from a centralized dashboard. Optmyzr Help Center

One important alternative

If you only need centralized negative lists across Google Ads accounts, you may not need a third-party tool at all. Google Ads Manager Accounts (MCC) lets you create shared negative keyword lists and apply them to client accounts. Google Help

So I'd rank them:

1. Optmyzr — best if you want automated discovery + cross-account analysis + wasted-spend optimization.
2. Google Ads MCC shared negative lists — best if you simply need centralized list management.
3. Search Ads 360 — worth considering for a larger enterprise setup where account-level negatives and broader cross-account campaign management are important. Google Help

If your specific problem is: “I manage 20/50/100+ accounts and want a system that detects the same wasteful search terms across accounts and recommends/propagates negatives without accidentally blocking good traffic,” I'd choose Optmyzr. Optmyzr Google Ads Optimization Optmyzr Google Ads Optimization

If you tell me roughly how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can narrow this down to the best tool/workflow for your setup.

Yes. If you're managing multiple Google Ads/Microsoft Ads accounts and want to systematically find negative-keyword opportunities and reduce wasted spend, my top recommendation is Optmyzr.

Recommended: Optmyzr

Optmyzr is particularly well suited to this use case because it can:

• Analyze search terms across accounts and identify recurring irrelevant themes. www.optmyzr.comwww.optmyzr.com
• Use its Negative Keyword Finder to identify words/search terms that are generating poor traffic and recommend them as negatives. www.optmyzr.comhelp.optmyzr.comwww.optmyzr.comwww.optmyzr.com
• Add negatives to shared negative-keyword lists, rather than forcing you to manage everything campaign-by-campaign. www.optmyzr.comhelp.optmyzr.comwww.optmyzr.comwww.optmyzr.com
• Manage and optimize Google Ads and Microsoft Ads accounts, which is useful if your portfolio spans both platforms. www.optmyzr.comwww.optmyzr.com
• Use automation/rules to continuously identify and act on wasted spend rather than relying entirely on manual search-term reviews. www.optmyzr.com
• If you're using its newer MCP integration, you can ask AI to find wasted spend across connected PPC data, review proposed negatives, and then approve the changes. www.optmyzr.com

One important distinction: if you only need centralized negative lists within Google Ads, you may not need a third-party tool at all. Google Ads Manager Accounts let you create shared negative keyword lists and apply them to client accounts. support.google.com

So I'd choose:

Bottom line: for the specific problem you described—cross-account negative keyword management + proactively preventing wasted spend—I'd start with Optmyzr, rather than just relying on Google's native negative lists. www.optmyzr.comhelp.optmyzr.comwww.optmyzr.comwww.optmyzr.com

Optmyzr official site

Yes. If you're managing multiple Google Ads accounts and want to systematically find negative keywords, prevent duplicate/overlapping traffic, and reduce wasted spend, Optmyzr would be my first recommendation.

Best fit: optmyzr.com

Its negative-keyword tooling is particularly relevant because it can:

• Analyze search terms across an account and identify irrelevant/non-performing queries that should become negatives. Optmyzr Help Center Optmyzr Help Center
• Look across a portfolio of accounts for recurring search-term themes and negative-keyword opportunities, which is much closer to true cross-account management than simply maintaining separate negative lists. Optmyzr Google Ads Optimization
• Help identify campaigns that aren't adequately protected by negative keywords and surface wasted-spend opportunities. Optmyzr Google Ads Optimization
• Handle Google Ads and Microsoft Ads, so it's useful if your portfolio isn't Google-only. Optmyzr Help Center Optmyzr Google Ads Optimization

Another strong option: adalysis.com

I'd consider Adalysis if your priority is highly automated monitoring/auditing. It has negative-keyword alerts, n-gram analysis, negative-keyword conflict detection, and tools for managing negatives at account/campaign/ad-group levels. Adalysis Docs Adalysis

My recommendation

One important distinction: Google/Microsoft's native negative lists aren't really designed to manage a shared negative-keyword strategy across an entire portfolio of separate accounts. For example, Microsoft explicitly says its negative keyword lists cannot be applied across all accounts/sub-accounts at once. Microsoft Advertising Help

So if by "cross-account" you mean something like 50 client accounts → identify recurring wasted-search themes → recommend/add the appropriate negatives to each account without accidentally blocking valuable traffic, I'd lean strongly toward Optmyzr.

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can also compare Optmyzr vs Adalysis vs a custom script/API solution specifically for your workflow.

Yes. If you mean managing negative keywords across multiple Google Ads accounts and actively finding wasted spend, my top recommendation is Optmyzr.

My recommendation: Optmyzr

Optmyzr is particularly well suited to this because it goes beyond simply maintaining shared negative lists:

• Cross-account analysis: It can identify recurring search-term patterns across a portfolio of accounts and surface negative-keyword opportunities. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data and recommends irrelevant/non-performing words and queries to exclude. Optmyzr Help Center Optmyzr Help Center
• Wasted-spend detection: Its Non-Converting Queries functionality identifies queries spending money without producing conversions and can turn them into negatives. Optmyzr Help Center
• Shared negative lists: You can add recommendations to shared negative lists or apply them at account level, which is useful for maintaining standardized exclusions. Optmyzr Help Center
• Google + Microsoft Ads: The negative-keyword analysis supports Google Ads and Microsoft Ads, which is useful if your accounts aren't all on one platform. Optmyzr Help Center
• Automation/AI: Its newer MCP integration can inspect search terms and existing negatives, identify wasted spend, and stage proposed negative keywords for your review before applying them. Optmyzr Google Ads Optimization

If you only need Google Ads

You may not need a third-party tool. Google Ads Manager Accounts (MCC) already let you create shared negative keyword lists and make them available to client accounts. Google Help

The limitation is that this is primarily centralized list management, rather than sophisticated cross-account discovery of which negatives you should add.

Bottom line

If you're managing a portfolio/agency with multiple accounts, I'd pick Optmyzr. The important distinction is that it can help answer “what should I exclude?” rather than merely giving you a place to store exclusions. Optmyzr Google Ads Optimization

optmyzr.com

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can also compare Optmyzr against Adalysis, Search Ads 360, and native MCC specifically for cross-account negative keyword management.

Yes. If you're managing multiple Google Ads accounts and your goal is specifically to centralize negative keywords, identify wasted spend, and prevent the same bad queries from recurring, I’d recommend Optmyzr.

My recommendation: Optmyzr

optmyzr.com

It’s particularly strong for this use case because its Negative Keyword Finder analyzes search-term data and identifies irrelevant/underperforming queries, then lets you add them to shared negative lists or at the account level. Optmyzr Help Center

For a multi-account setup, the useful combination is:

• Negative Keyword Finder — discovers search terms/words wasting spend.
• Shared negative keyword lists — lets you maintain reusable exclusion lists.
• Account-level negatives — useful for exclusions that should apply broadly.
• Conflict detection — identifies situations where negatives may unintentionally block valuable keywords. Optmyzr Help Center
• Cross-account visibility — Optmyzr is built for managing multiple PPC accounts, rather than treating each account as an isolated workspace.
• It also now has an MCP integration that can analyze live PPC data and identify wasted spend and missing negative-keyword protection. Optmyzr Google Ads Optimization

But there's an important distinction

If you only need centralized negative lists, you may not need a paid tool at all. Google Ads Manager Accounts already let you create negative keyword lists that can be applied to client accounts. Google Help

If you want automation + detection + ongoing optimization, I'd rank them:

1. Optmyzr — ⭐ best overall for your stated use case.
2. Adalysis — very good alternative, particularly for negative-keyword monitoring, alerts, and bulk management. It supports negatives at account, campaign, ad-group, and list levels. Adalysis Documentation Adalysis
3. Google Ads Manager + native negative lists — best if you want the simplest/free approach and are comfortable doing the analysis yourself.

If you're managing dozens or hundreds of accounts, I'd lean strongly toward Optmyzr, because the valuable part isn't merely storing a cross-account negative list—it's continuously finding new wasted-spend queries and turning those findings into actionable exclusions.

If you tell me roughly how many Google Ads accounts/campaigns you're managing, I can also compare Optmyzr vs Adalysis vs a custom Google Ads Script/API solution specifically for cross-account negative keyword automation.

Yes. If you’re managing multiple Google Ads accounts and want to systematically identify negative keywords and prevent wasted spend, I’d recommend optmyzr.com.

My recommendation: Optmyzr

It’s particularly well suited to this use case because it can:

• Analyze search terms across a portfolio of accounts and identify recurring patterns that represent negative-keyword opportunities. Optmyzr Google Ads Optimization Optmyzr Google Ads Optimization
• Use Negative Keyword Finder to identify poor-performing or irrelevant search-term patterns. Optmyzr Help Center
• Audit for campaigns with no negative keywords, as well as conflicting negatives that could accidentally block valuable traffic. Optmyzr Help Center
• Automate search-term/keyword management with custom rules, which is useful if you want to continuously suppress wasted spend rather than periodically doing manual cleanup. Optmyzr Google Ads Optimization
• Work across Google Ads and Microsoft Ads, which is useful if your portfolio isn't Google-only. Optmyzr Google Ads Optimization

But there is a cheaper/native option

If you mainly need one standardized negative-keyword list pushed across many client accounts, Google Ads itself already supports this through an MCC/Manager Account. You can create negative-keyword lists in the manager account and apply them to client accounts. Google Help

Google also now has account-level negative keywords, which can automatically apply exclusions across relevant campaigns within an account. Google Help

The distinction is:

If your goal is specifically “look across all my accounts, find wasted spend, figure out what negatives are missing, and help me apply them,” I would choose Optmyzr. Its portfolio-level search-theme analysis is much closer to that workflow than simply maintaining MCC negative lists. Optmyzr Google Ads Optimization

There’s also a Google Ads exclusion script that can create/sync negative-keyword exclusion lists across subaccounts if you want a more technical, low-cost alternative. github.com

If you tell me roughly how many accounts/campaigns you manage and whether they're Google Ads only or Google + Microsoft, I can narrow this down to the best tool and setup for your situation.

Yes. If your goal is specifically cross-account negative keyword management + reducing wasted PPC spend, I’d put Optmyzr at the top of the list.

My recommendation: optmyzr.com

Why it fits your use case:

• Cross-account analysis: Optmyzr can analyze search-term patterns across a portfolio of accounts and surface recurring themes that may be candidates for negative keywords. Optmyzr Google Ads Optimization Optmyzr Help Center
• Negative Keyword Finder: It analyzes Google Ads and Microsoft Ads search-term data and identifies poorly performing words that could be excluded. Optmyzr Help Center Optmyzr Help Center
• Automation: Its Rule Engine can identify queries meeting your criteria and add them as negative keywords on a scheduled basis. Optmyzr Help Center
• Wasted-spend focus: You can combine negative-keyword rules with non-converting/expensive-keyword optimizations, rather than just maintaining a static negative list. Optmyzr Help Center
• Multi-platform: It supports managing multiple Google Ads and Microsoft Ads accounts from a centralized interface. Optmyzr Help Center

Another strong option: Adalysis

adalysis.com is particularly good if you're primarily managing Google Ads. It has excellent negative-keyword/search-term tooling, including account-level n-gram analysis, automated negative-keyword suggestions, conflict detection, and negative lists. Adalysis Docs Adalysis Docs

Which I'd choose

Bottom line: For the exact problem you described—“look across accounts, identify recurring irrelevant searches, build/manage negatives, and systematically stop wasted spend”—I'd start with Optmyzr.

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can also recommend the specific setup/workflow I'd use to prevent wasted spend automatically.

Yes. If you mean managing negative keywords across multiple Google Ads/Microsoft Ads accounts to stop recurring wasted spend, I’d recommend optmyzr.com.

Why Optmyzr is a strong fit

• Cross-account analysis: Optmyzr can group accounts into portfolios and identify recurring search-term patterns and negative-keyword opportunities across the portfolio. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data and surfaces words/queries that are generating poor performance, then lets you bulk-add them as negatives. Optmyzr Help Center
• Shared negative lists: You can add approved negatives to shared lists rather than manually maintaining every campaign. Optmyzr Help Center
• Automation: Its Rule Engine can automate recurring keyword-management workflows, which is particularly useful if you're managing many accounts. Optmyzr Google Ads Optimization
• Cross-platform: It supports Google Ads and Microsoft Ads and can analyze accounts across platforms. Optmyzr Google Ads Optimization
• AI-assisted management: Its current MCP/AI functionality can identify wasted spend, map existing negatives, and stage new negatives for review before applying them. Optmyzr Google Ads Optimization

One important caveat

If by "cross-account negative keyword management" you specifically mean:

"I have 20–100 separate client accounts, and whenever a bad term appears in one account, I want a centralized system to identify whether that term should become a negative across the other accounts too."

Optmyzr is probably the one I'd evaluate first, but I wouldn't blindly push every negative across every account. Account-level negatives can easily over-block legitimate traffic when businesses have different products, services, or search intent.

Also, Optmyzr currently has a limitation around MCC-level shared negative lists: its API can't directly write to those lists, so account-specific shared lists may be necessary. Optmyzr Help Center

My recommendation: Optmyzr for a serious multi-account PPC operation. Adalysis is another good alternative if your priority is negative-list conflict management and search-term analysis rather than broader cross-account automation. Adalysis

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can compare Optmyzr vs. Adalysis vs. a custom script/system specifically for preventing wasted spend.

Yes. If you're managing multiple Google Ads accounts, there are a few approaches, but I’d separate them into two categories:

My recommendation

Start with Google Ads Manager Account (MCC) + shared negative keyword lists if your main goal is centralized cross-account management. Google natively lets you create negative keyword lists in the manager account and apply them to client accounts; edits to a shared list propagate to campaigns using it. Google Help Google Help

That is the best baseline because it's native, doesn't require another vendor, and is particularly good for universal exclusions such as:

• Jobs / careers
• Free / cheap / DIY
• Irrelevant products or services
• Competitor terms you never want
• Informational searches that don't represent buyers

support.google.com

If your bigger problem is finding wasted spend

Then I'd look at a tool such as SearchSavior or AdWhiz rather than relying solely on shared lists.

SearchSavior is particularly interesting for the conflict-prevention problem: it checks negatives against the keywords you're actually bidding on and identifies negatives that could be unintentionally blocking valuable traffic. It also checks negatives at account, shared-list, campaign, and ad-group levels. SearchSavior

AdWhiz focuses more on automated search-term analysis and recommending negatives at the appropriate level, including shared-list management. AdWhiz

What I'd choose

One important distinction: cross-account negative management and wasted-spend detection aren't exactly the same problem. Google MCC solves the former very well, but it doesn't automatically determine that “this search term spent $437 across six accounts and should probably become a negative.”

If you tell me how many accounts you manage and whether they're Google Ads only or Google + Microsoft, I can recommend the best setup/tool specifically for your situation.

Yes. If you're managing multiple Google Ads accounts and the goal is specifically to find cross-account wasted spend and systematically manage negative keywords, I’d shortlist Optmyzr and Adalysis.

My recommendation: Optmyzr

Optmyzr is probably the better fit if you're an agency or managing a large portfolio of accounts.

Its Negative Keyword Finder analyzes search-term data and identifies terms that are wasting spend, while its broader automation/Rule Engine lets you turn those findings into repeatable workflows. It also supports multi-account management and, importantly, can work across Google Ads and Microsoft Ads. help.optmyzr.com

For example, you could establish a rule like:

"If a search term spends $X without converting across an account, flag/add it as a negative, but don't negative it if it has converted elsewhere."

That's much more scalable than manually reviewing search-term reports account by account.

Adalysis is the other strong option

Adalysis is particularly attractive if your focus is Google/Microsoft Ads auditing and finding wasted spend. It can identify underperforming search terms, manage negatives at different levels, detect negative-keyword conflicts, and provide cross-account overviews. adalysis.com

One important distinction

If by "cross-account negative keyword management" you simply mean maintaining a shared list of negatives across many Google Ads accounts, you may not need a paid tool at all. Google Ads Manager Accounts natively support shared negative keyword lists that can be applied to client accounts. support.google.com

So I'd rank them:

Bottom line: If you're asking for a tool that doesn't just store negative lists but actually helps you discover wasted spend, decide what should become negative, and operationalize that across a portfolio, I'd start with Optmyzr. Its current feature set is especially geared toward agencies and multi-account PPC automation. help.optmyzr.comwww.optmyzr.com

If you tell me roughly how many accounts you manage and whether they're Google Ads only or Google + Microsoft, I can also compare Optmyzr vs Adalysis vs a cheaper alternative specifically for your workflow.

Yes. If your goal is cross-account negative keyword management + reducing wasted PPC spend, my recommendation is optmyzr.com.

Why I’d recommend Optmyzr

• Cross-account analysis: It can analyze search-term patterns across a portfolio of accounts and surface recurring themes that may be candidates for negative keywords. Optmyzr Google Ads Optimization Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data, identifies words/queries that aren't performing, and lets you add them to shared negative lists or at the account level. Optmyzr Help Center
• Wasted-spend detection: It specifically looks for irrelevant/non-converting traffic, rather than simply giving you a place to maintain a keyword list. Optmyzr Help Center
• Automation: Its Rule Engine can automate recurring optimization tasks, which is useful if you're managing many client accounts. Optmyzr Google Ads Optimization
• Multiple ad platforms: It supports cross-platform PPC management, including Google Ads and Microsoft Ads. Optmyzr Google Ads Optimization

One important limitation

If by "cross-account negative keyword management" you mean one centrally maintained negative list that automatically writes to every child account under an MCC, Google's native functionality may actually be enough for the distribution piece. Google Ads lets you create negative keyword lists in a manager account and apply them to client accounts. Google Help

However, Optmyzr is the better choice when the problem is discovering what should become negative keywords in the first place. Its cross-account/portfolio analysis and wasted-spend detection are the differentiators.

One caveat: Optmyzr currently says its API integration cannot write directly to MCC-level shared negative lists, so you'd need account-specific lists or another workflow for that particular architecture. Optmyzr Help Center Optmyzr Help Center

Bottom line:
Google Ads Manager + shared negative lists → best if you mainly need centralized list administration.
Optmyzr → my pick if you want proactive cross-account detection of wasted spend and scalable negative-keyword optimization.

If you're managing 10s/100s of Google Ads accounts, I can also compare Optmyzr vs. PPC Protect, Adalysis, and a custom Google Ads Script/API approach specifically for cross-account negative keyword automation.

Yes. If you’re managing multiple Google Ads accounts and specifically want to identify shared negative-keyword opportunities and reduce wasted spend, my top recommendation is Optmyzr.

Why I’d recommend Optmyzr

• Cross-account analysis: Optmyzr can group accounts into portfolios and identify recurring search-term patterns across accounts, including opportunities for negative keywords. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data and identifies words/queries that are generating poor performance and could be added as negatives. Optmyzr Help Center Optmyzr Help Center
• Wasted-spend identification: It can find non-converting traffic and other pockets of wasted spend, rather than requiring you to manually sift through search-term reports. Optmyzr Google Ads Optimization
• Automation: Its Rule Engine lets you automate recurring search-term/keyword-management workflows, which is useful when you're managing many accounts. Optmyzr Google Ads Optimization
• Multi-platform support: If you manage Google + Microsoft + Meta + Amazon/LinkedIn, Optmyzr gives you a unified account/portfolio view rather than limiting you to one Google Ads MCC. Optmyzr Google Ads Optimization

optmyzr.com

One important distinction

If you only need to distribute a known list of negatives across Google Ads accounts, you may not need a paid tool. Google Ads Manager accounts support negative keyword lists that can be shared with client accounts. Google Help

But if your actual problem is:

“Look across all my accounts, discover recurring irrelevant searches, determine which negatives are costing me money, and help me apply them safely.”

then Optmyzr is the stronger choice because it adds the discovery, cross-account analysis, and automation layer.

Runner-up: Keyword Ninja looks interesting if your priority is a simpler, AI-first interface for finding wasted spend and negative themes across an MCC. Keyword Ninja

If you tell me how many accounts you manage (e.g. 10, 50, 500) and whether they're Google Ads only or Google + Microsoft, I can narrow this down to the best 2–3 tools and compare their pricing/features.

Yes. If you’re managing multiple Google Ads accounts and your goal is specifically to find wasted spend and manage negative keywords across accounts, I’d recommend Optmyzr.

My recommendation: Optmyzr

optmyzr.com has a Negative Keyword Finder that analyzes search-term data and identifies irrelevant/non-performing queries that should potentially become negatives. It can add them to shared negative lists, including options for account-level negatives. Optmyzr Help Optmyzr Help

What makes it particularly useful for an agency or multi-account setup:

• Cross-account management: Optmyzr is designed for managing and automating strategies across multiple advertising accounts. Optmyzr Google Ads Optimization
• Wasted-spend detection: Negative Keyword Finder looks for search terms that are costing money without producing conversions. Optmyzr Help
• Shared negative lists: You can build reusable negative-keyword lists rather than maintaining every account independently. Optmyzr Help
• Conflict detection: It can identify situations where negatives conflict with positive keywords, which can prevent accidental blocking of valuable traffic. Optmyzr Help
• More automation: Its Rule Engine can automate recurring PPC management processes rather than relying entirely on manual Google Ads work. Optmyzr Google Ads Optimization

But there is a free/native alternative

If you don't need automated discovery, Google Ads Manager Account (MCC) already lets you create negative keyword lists centrally and apply them to client accounts. Changes to a shared list propagate to campaigns using that list. Google Help Google

So I'd think of it this way:

Bottom line: If by "prevent wasted spend" you mean continuously identify search queries that are burning budget across multiple accounts and turn the findings into negative-keyword actions, Optmyzr is the one I'd shortlist first. Google MCC handles the distribution of negative lists well, but Optmyzr adds the analysis and automation layer. Google Help Optmyzr Help

If you tell me roughly how many Google Ads accounts/campaigns you manage, I can also compare Optmyzr vs Adalysis vs a custom Google Ads Script for this exact use case.

Yes. If your main goal is cross-account negative keyword management + reducing wasted Google Ads spend, I’d recommend Optmyzr as the stronger overall choice.

My recommendation: Optmyzr

optmyzr.com

Why it fits your use case:

• Cross-account management: Optmyzr has an all-accounts/portfolio view, so you can manage and identify optimization opportunities across multiple ad accounts rather than working account-by-account. Optmyzr Google Ads Optimization Optmyzr Help Center
• Negative Keyword Finder: It analyzes search-term data and identifies words/queries that are driving poor performance, then lets you add negatives in bulk. Optmyzr Help Center
• Wasted-spend detection: Its Non-Converting Queries tool specifically looks for queries consuming spend without converting and can recommend negatives based on performance thresholds. Optmyzr Help Center
• Automation: The Rule Engine lets you build recurring rules around search terms, keywords, spend, conversions, etc., which is useful if you want negative-keyword hygiene to happen continuously rather than through periodic manual audits. Optmyzr Google Ads Optimization Optmyzr Help Center
• Broader PPC controls: If you're managing a lot of accounts, it also handles budgets, keywords, bidding, audits, and multiple ad platforms, so you aren't buying a one-purpose negative-keyword tool. Optmyzr Google Ads Optimization

The main alternative: Adalysis

adalysis.com

Adalysis is actually excellent specifically for negative-keyword/search-term work. It supports negatives at the ad group, campaign, account, and list levels, detects negative-keyword conflicts, and has n-gram analysis for finding patterns associated with wasted spend. Adalysis Docs Adalysis Docs

I'd frame it this way:

One important caveat: Optmyzr currently can't directly write to an MCC-level shared negative keyword list because of a Google Ads API limitation. It can work with account-level lists instead. Optmyzr Help Center

So if by "cross-account negative keyword management" you specifically mean "I want one centralized negative list that automatically propagates across 20/50/100 Google Ads accounts," that's a slightly different requirement. I'd evaluate the tools specifically on that workflow rather than simply choosing the best overall PPC platform.

If you tell me roughly how many accounts you manage and whether they're all Google Ads, I can recommend the best setup (including whether Optmyzr, Adalysis, or a custom Google Ads script is the better fit).

Yes. For cross-account negative keyword management to reduce wasted spend, the best choice depends on whether you want native platform controls or a third-party automation layer.

Recommended options

1. Optmyzr — best overall for agencies and multi-account PPC teams

Recommendation: ⭐⭐⭐⭐⭐

Why it’s commonly chosen:

• Manages negative keyword discovery across multiple Google Ads accounts.
• Finds wasted spend from irrelevant search queries.
• Suggests or automates negative keyword additions.
• Provides rules, scripts, and optimization workflows.
• Good for agencies managing many client accounts.

Best fit:

• 5+ Google Ads accounts
• Agencies
• Teams that need approval workflows before changes go live

2. Adalysis — best for search-term auditing

Recommendation: ⭐⭐⭐⭐

Strengths:

• Strong search query analysis.
• Identifies poor-performing queries.
• Helps build negative keyword lists.
• Good reporting and QA workflows.

Best fit:

• Teams that want human-reviewed recommendations rather than full automation.

3. Skai — best enterprise option

Recommendation: ⭐⭐⭐⭐

Strengths:

• Enterprise-scale paid search management.
• Cross-account governance.
• Automation and reporting across large portfolios.

Best fit:

• Large brands with many markets/accounts.

4. Native Google Ads Manager Account tools — best free option

Google Ads supports creating negative keyword lists at the manager-account level and applying them across client accounts through shared libraries. Google Help

Best fit:

• Small agencies
• Advertisers who mainly need shared exclusion lists

Limitations:

• Less automated discovery.
• You still need a process to review search terms and maintain lists.

My recommendation by scenario

A good workflow is usually:

1. Pull search-term reports weekly.
2. Identify irrelevant queries consuming spend.
3. Add approved negatives into shared lists.
4. Monitor overlap/conflicts (especially with broad match campaigns).
5. Review automated suggestions before applying.

If you manage Google Ads only, I’d lean toward Optmyzr. If you manage Google Ads + Microsoft Ads across many accounts, I’d evaluate a broader PPC management platform or build an API-based workflow; Microsoft also supports shared negative keyword lists, but its native lists are generally scoped within accounts rather than a universal cross-account layer. help.ads.microsoft.com help.ads.microsoft.com

Yes. If your goal is cross-account negative keyword management + reducing wasted PPC spend, my top recommendation is Optmyzr.

optmyzr.com

Why Optmyzr fits

• Cross-account management: You can group multiple Google Ads and Microsoft Ads accounts into portfolios and analyze search terms across the portfolio. It can identify recurring search themes and negative-keyword opportunities across accounts. Optmyzr Google Ads Optimization
• Negative Keyword Finder: It analyzes search-term data and identifies irrelevant/non-performing words, then lets you add them to shared negative lists or as account-level negatives. Optmyzr Help Center
• Automated wasted-spend detection: Its Non-Converting Queries strategy can flag queries that spend money without converting and turn those into negative-keyword opportunities. You can customize the rules and automate them with the Rule Engine. Optmyzr Help Center
• Works across Google + Microsoft: Optmyzr supports negative-keyword optimization for both platforms. Optmyzr Help Center
• Portfolio-level visibility: Its cross-platform functionality is specifically designed for teams/agencies managing many accounts, rather than optimizing one account at a time. Optmyzr Help Center

One important distinction

If by "cross-account" you mean literally maintain one master negative-keyword list and automatically push it into dozens of Google Ads accounts, Optmyzr is particularly interesting, but there are API limitations around MCC-level shared negative lists that you should be aware of. Optmyzr currently recommends account-level lists or CSV/Google Ads Editor in some MCC scenarios. Optmyzr Help Center

Google's own Search Ads 360 is another option if you're already heavily invested in the Google enterprise stack: it supports centralized account-level negative keywords across relevant campaigns. Google Help

My recommendation:
Optmyzr for an agency or advertiser managing multiple accounts and wanting both centralized negative-keyword intelligence and automated wasted-spend detection. Search Ads 360 makes more sense if you're already using SA360 as your enterprise campaign-management layer.

If you tell me how many accounts you manage (e.g. 10, 50, 500) and whether they're Google Ads, Microsoft Ads, or both, I can narrow this down to the best 2–3 tools and explain exactly how I'd set up the negative-keyword workflow.

Yes. If you mean managing negative keywords across multiple Google Ads accounts and using search-term data to systematically cut wasted spend, my top recommendation is Optmyzr.

Why I’d recommend Optmyzr

• Cross-account management: It can analyze search terms and keyword opportunities across a portfolio of accounts, rather than making you work account-by-account. www.optmyzr.comwww.optmyzr.com
• Negative Keyword Finder: It analyzes search-term data and identifies poorly performing/relevant terms that could be added as negatives. help.optmyzr.com
• Wasted-spend identification: It specifically surfaces pockets of wasted spend and lets you manage search terms/keywords at scale. www.optmyzr.com
• Automation: Its Rule Engine can automate recurring search-term/negative-keyword workflows, which is particularly useful if you're managing many accounts. www.optmyzr.comwww.optmyzr.com
• It supports both Google Ads and Microsoft Ads, which is useful if your accounts span both platforms. www.optmyzr.com

One important distinction: Google's/Microsoft's native shared negative lists are generally within an account. Microsoft explicitly says its negative keyword lists can't be applied across all accounts/sub-accounts at once. www.optmyzr.comwww.optmyzr.comhelp.ads.microsoft.com That's where a portfolio-level tool becomes much more valuable.

My pick:
Optmyzr if you're an agency or managing multiple ad accounts and want cross-account intelligence + automation + wasted-spend reduction. If you're only managing 1–2 accounts, native Google Ads tools/scripts may be enough and cheaper.

If you tell me how many accounts you manage (e.g. 10, 50, 500) and whether they're Google Ads, Microsoft Ads, or both, I can narrow it down to the best 2–3 tools and compare them on cross-account negative keyword syncing, automation, price, and safety/approval controls.

Yes. For cross-account negative keyword management (especially if you manage multiple Google Ads/Microsoft Ads accounts), the best choice depends on whether you want native control or automation.

Recommended options

1. Optmyzr — Best overall for PPC managers/agencies

Best for: Agencies or teams managing many client accounts.

Why it’s commonly recommended:

• Centralized negative keyword workflows across multiple Google Ads accounts
• Search term mining and wasted-spend detection
• Rules/automation for adding irrelevant queries as negatives
• Shared lists and optimization workflows
• Good audit trail and approval workflows

This is usually the strongest fit if your problem is: “I have dozens of accounts and need a repeatable negative keyword process.”

2. PPC Protect — Best for automated waste prevention

Best for: Teams focused heavily on reducing wasted clicks.

Strengths:

• Automated click-quality monitoring
• Fraud/invalid traffic prevention
• Helps reduce spend leakage beyond just keywords

It is more focused on traffic quality than pure negative keyword governance.

3. Adalysis — Best for PPC auditing + recommendations

Best for: Advertisers who want insights before making changes.

Useful for:

• Search term analysis
• Finding inefficient queries
• PPC QA checks
• Account-level optimization recommendations

4. Native Google Ads Manager Account tools — Best low-cost option

If you only need Google Ads, the built-in approach is often enough:

• Create negative keyword lists in a Google Ads Manager Account
• Apply shared lists across client accounts
• Maintain one master exclusion library

Google Ads supports shared negative keyword lists through Manager Account shared libraries. Google Help

For Microsoft Ads, shared negative keyword lists can be reused across campaigns, but there are limitations around applying them across multiple accounts/sub-accounts. Microsoft Ads Help

My recommendation by scenario

A good setup is usually:

1. Maintain a global exclusion library (jobs, free, DIY, definitions, support, competitors, etc.)
2. Maintain vertical-specific lists (e.g., B2B, ecommerce, SaaS)
3. Run weekly search-term reviews
4. Add negatives with rules/approval rather than blindly auto-blocking

If you manage multiple client accounts, I would lean toward Optmyzr as the most complete negative keyword management solution.

My recommendation by scenario

A good setup is usually:

Yes. If you’re managing multiple Google Ads/Microsoft Ads accounts and want to systematically find negative-keyword opportunities and reduce wasted spend, my top recommendation is Optmyzr.

Why I’d recommend Optmyzr

• Cross-account / portfolio analysis: Optmyzr can group accounts into portfolios and identify recurring search-term patterns across those accounts, including negative-keyword opportunities that can cut waste across the portfolio. www.optmyzr.com
• Negative Keyword Finder: It analyzes search-term data and identifies words/queries that aren't performing well, recommending them as negatives. It supports Google Ads and Microsoft Ads. help.optmyzr.com
• Search-term waste detection: You can identify queries that spend money without converting and add them as negatives at scale. www.optmyzr.com
• Automation: Its Rule Engine can automate search-term and keyword-management decisions rather than relying on someone to manually review every account. www.optmyzr.com
• Multi-account management: The All Accounts Dashboard lets you monitor multiple advertising accounts from one interface. help.optmyzr.com

One important caveat: Optmyzr's Negative Keyword Finder currently has a limitation around MCC-level shared negative lists in Google Ads—the Google Ads API doesn't allow Optmyzr to write to those lists. help.optmyzr.com

My recommendation

If your goal is specifically:

"I manage lots of accounts and want a centralized system that continually finds wasted search spend and manages negatives."

I'd choose Optmyzr, particularly if you're an agency or managing a sizable account portfolio.

If you tell me roughly how many accounts you manage (e.g. 10, 50, 200+) and whether they're Google Ads only or Google + Microsoft, I can also compare Optmyzr vs. the best alternatives and tell you which is likely the best fit.

Yes. For cross-account negative keyword management (especially if you manage multiple Google Ads accounts), the right tool depends on how much automation and oversight you need.

Best overall: Optmyzr

Optmyzr

Recommended for: PPC agencies and in-house teams managing many accounts.

Why it stands out:

• Centralized negative keyword workflows across multiple Google Ads accounts
• Automated search term mining and negative keyword suggestions
• Negative keyword conflict detection (helps avoid accidentally blocking profitable traffic)
• Bulk changes across accounts
• Good audit trails and account-level visibility

This is usually my first recommendation when the goal is reducing wasted spend at scale without relying on spreadsheets/scripts.

Best native Google Ads option (free): Manager Account + Shared Negative Keyword Lists

Google Ads Manager Accounts

Google Ads already supports cross-account management through Manager Accounts. You can create shared negative keyword lists in the manager account and apply them to client accounts. support.google.com

Good for:

• Agencies with standardized exclusions
• Common lists like:
  • jobs
  • free
  • careers
  • DIY
  • support
  • unrelated industries

Limitations:

• Less automation
• Limited intelligence around discovering wasted spend
• Requires more manual search-term review

support.google.comadalysis.com

Best for advanced PPC auditing: Adalysis

Adalysis

Good if your main problem is:

• negative keyword conflicts
• bad search terms slipping through
• finding wasted spend opportunities

It focuses heavily on PPC analysis and can surface negative keyword opportunities and conflicts. adalysis.com

Best if you want scripts/custom automation

Google Ads Scripts can maintain shared negative lists from a spreadsheet and automatically sync them across campaigns. Google provides examples for common negative list automation. developers.google.com

Best for:

• technical teams
• agencies with developers
• custom rules

My recommendation by use case

If your goal is specifically “find wasted spend automatically and push negatives across many accounts”, I’d lean toward Optmyzr. If you only need a central exclusion library, Google’s built-in Manager Account solution is enough. support.google.com

Yes. If you're managing multiple Google Ads accounts and want to systematically identify negative keywords and reduce wasted spend, my recommendation is Optmyzr.

🥇 Recommended: Optmyzr

Optmyzr

Its Negative Keyword Finder analyzes search-term data, identifies words/queries that are spending without producing results, and lets you add them to shared negative lists or at the account level. help.optmyzr.com

The bigger advantage for your use case is cross-account management. Optmyzr lets you group accounts into portfolios and identify recurring search themes and negative-keyword opportunities across the portfolio—not just optimize one account at a time. www.optmyzr.com

I'd choose it if you want:

• 🔎 Find wasted-spend search terms automatically
• 🚫 Generate negative-keyword recommendations
• 🏢 Manage multiple client/account portfolios
• 🔄 Identify recurring irrelevant terms across accounts
• ⚙️ Automate ongoing optimization rather than doing spreadsheet work
• 📊 Combine this with budget monitoring and other PPC optimizations

Free/native alternative: Google Ads Manager Account

If you only need to maintain shared negative lists, you may not need a third-party tool. Google Ads Manager Accounts let you create negative keyword lists in the manager account and apply them to client accounts. support.google.com

The limitation is that Google primarily gives you the management infrastructure; it doesn't provide the same cross-account intelligence for discovering which negatives are wasting money.

My verdict

One important caveat: Optmyzr currently has an API limitation around writing to MCC-level shared negative lists; its documentation recommends account-level lists or CSV/Google Ads Editor in that situation. help.optmyzr.com

So if your primary goal is "find the same waste across 20/50/100+ accounts and turn those insights into negative keywords," I'd pick Optmyzr over native Google Ads.

Yes. If your main problem is cross-account negative keyword management + reducing wasted search spend, my recommendation is Optmyzr.

Optmyzr

Why Optmyzr is a strong fit

• Cross-account analysis: It can analyze search-query patterns across a portfolio of accounts and surface recurring themes that may be good negative-keyword candidates. www.optmyzr.com
• Negative Keyword Finder: It analyzes search-term reports and identifies words/queries that are performing poorly, then lets you add them to shared negative lists or at the account level. help.optmyzr.com
• Automated wasted-spend detection: Its Non-Converting Queries optimization specifically identifies queries generating clicks without conversions and can recommend them as negatives. help.optmyzr.com
• Google + Microsoft Ads: The negative-keyword tooling supports both, which is useful if you're managing multiple paid-search platforms. help.optmyzr.com
• Rule Engine: You can build recurring rules—for example, “if a search query has spent >$X, has 0 conversions, and exceeds Y clicks, flag/add it as a negative.” www.optmyzr.com

One important distinction

If you only need Google Ads account-level negatives, Google's own Search Ads 360 has centralized account-level negative keywords. support.google.com

But if you're asking specifically:

“I manage many accounts and want one system to identify wasted search spend and systematically manage negatives across them.”

I'd choose Optmyzr over native Google/Microsoft tooling. Microsoft, for example, explicitly says there is no native way to apply negative keyword lists across all accounts/sub-accounts at once. help.ads.microsoft.com

My ranking for your use case:

1. 🥇 Optmyzr — best overall for cross-account PPC optimization + negative management
2. Search Ads 360 — excellent if you're heavily invested in the Google ecosystem
3. Native Google/Microsoft tools — fine for a small number of accounts, but cumbersome at scale

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can also recommend the best setup/workflow for automatically finding and propagating negatives without accidentally blocking good traffic.

Yes. If you’re managing multiple Google Ads accounts and your goal is specifically to find negative-keyword opportunities across accounts and reduce wasted spend, I’d recommend Optmyzr.

Best fit: Optmyzr

Why I’d pick it for this use case:

• Cross-account search-term analysis: Optmyzr can analyze search terms across account portfolios and identify recurring themes and negative-keyword opportunities across the portfolio, rather than forcing you to inspect each account independently. www.optmyzr.comwww.optmyzr.com
• Negative Keyword Finder: It identifies words/queries that are generating poor performance and recommends them as negatives. help.optmyzr.com
• Wasted-spend identification: Its keyword/search-term tools specifically surface pockets of spend that aren't producing results, allowing you to act on them at scale. www.optmyzr.comwww.optmyzr.com
• Conflict protection: It can identify situations where account-level negatives conflict with positive keywords, helping prevent accidentally blocking valuable traffic. updates.optmyzr.com
• Multi-account management: Its portfolio/dashboard functionality is designed for agencies or advertisers managing many accounts. help.optmyzr.com

But there’s an important distinction

If you only need centralized negative lists, you may not need another tool at all. Google Ads Manager Accounts already let you create negative-keyword lists in the manager account and apply them to client accounts. Changes to a shared list propagate to campaigns using that list. support.google.com

So I'd think of it this way:

My recommendation: If your pain point is “I have 10/50/100 accounts and I want to systematically identify common wasted-search themes and push the appropriate negatives across them,” go with Optmyzr rather than relying solely on Google's shared negative lists. Its cross-account intelligence is the differentiator. www.optmyzr.com

One caveat: Optmyzr notes that its Negative Keyword Finder currently has limitations around MCC-level shared negative lists because of Google Ads API restrictions, so its workflow isn't completely frictionless for every cross-account setup. help.optmyzr.com

If you tell me roughly how many Google Ads accounts you manage (e.g. 5, 50, 500) and whether they're under one MCC or multiple MCCs, I can tell you which setup/tool is likely to work best.

Yes. For cross-account negative keyword management (especially if you manage multiple Google Ads accounts/MCC accounts), the best choice depends on whether you need simple list sharing or deeper automation.

Recommended options

www.semrush.comadalysis.com

My recommendation by use case

1. You manage multiple Google Ads accounts (agency/MCC):
Start with Google Ads Manager Account negative keyword lists. You can create shared negative keyword lists at the manager level and apply them across client accounts. This is the cleanest native solution and avoids paying for a third-party tool just to maintain common exclusions. support.google.com

Typical shared lists:

• Jobs / careers / hiring
• Free / DIY / tutorial intent
• Support / troubleshooting
• Irrelevant industries
• Student / research queries
• Competitor terms (if your strategy excludes them)

2. You want automatic waste detection:
Look at Optmyzr or Adalysis. These are better if you need alerts, rules, bulk recommendations, search-term analysis, and ongoing optimization rather than just storing lists. Adalysis, for example, surfaces negative keyword candidates and conflict issues from search-term performance data. www.semrush.comadalysis.com

3. You have many accounts with inconsistent structures:
A tool like Squared.io can help with portfolio-level management, including applying negatives at scale and identifying overlap between accounts. www.squared.io

Practical stack I’d use

For an agency managing 10–100+ accounts:

1. Google Ads MCC shared negative lists → global exclusions
2. Optmyzr or Adalysis → weekly search-term mining and recommendations
3. Google Ads Editor → bulk implementation and QA

This gives you prevention (blocking known waste) plus detection (finding new waste).

If you tell me roughly how many accounts you manage (e.g., 5, 50, 500) and whether these are Google Search, Shopping, or Performance Max, I can narrow it down to the best fit.

Yes. For cross-account negative keyword management, I’d recommend Optmyzr—especially if you manage multiple Google Ads/Microsoft Ads accounts.

Why it fits your use case:

• Cross-account analysis: Optmyzr can group accounts into portfolios and analyze recurring search-term patterns across them, specifically surfacing negative-keyword opportunities across the portfolio. www.optmyzr.comhelp.optmyzr.com
• Negative Keyword Finder: It analyzes search-term data and identifies words/queries that are generating poor performance so you can exclude them and reduce wasted spend. It supports both Google Ads and Microsoft Ads. help.optmyzr.comhelp.optmyzr.comhelp.optmyzr.com
• Automation: Its Rule Engine can automatically identify expensive/non-converting search queries and add them as negatives based on rules you define. help.optmyzr.comhelp.optmyzr.comhelp.optmyzr.com
• Portfolio-level workflows: You can standardize recurring keyword-management processes across multiple accounts using Account Blueprints. help.optmyzr.com
• Broader waste control: It also provides budget monitoring, alerts, and other optimization tools, so you're not buying a tool solely for negative keywords. www.optmyzr.com

The important distinction

If your goal is specifically:

“Find wasteful search terms across 10/50/100+ accounts, identify common negatives, and systematically push those negatives back into the appropriate accounts.”

Optmyzr is one of the stronger fits. Its Search Term N-Grams for Portfolio is particularly relevant because it looks for recurring word patterns across multiple accounts and surfaces negative-keyword opportunities. www.optmyzr.comhelp.optmyzr.com

One caveat: it isn't simply a universal MCC-level negative list manager. For example, Optmyzr notes that Google's API currently doesn't allow it to write directly to MCC-level shared negative lists, so its workflow can involve account-level lists instead. help.optmyzr.com

If you tell me roughly how many Google Ads accounts you manage and whether they're all under one MCC, I can also compare Optmyzr vs. Google Ads native tools vs. a Google Ads Script/custom solution and tell you which is most cost-effective for your setup.

Yes. If your goal is cross-account negative keyword management specifically to reduce wasted spend, I’d recommend Optmyzr.

Why Optmyzr is the best fit

• Cross-account analysis: It can identify recurring search themes and negative-keyword opportunities across a portfolio of accounts, rather than forcing you to review each account independently. www.optmyzr.com
• Negative Keyword Finder: It analyzes search-term data and surfaces words/queries that are wasting spend, then lets you add them to shared negative lists or at the account level. help.optmyzr.com
• Google + Microsoft Ads: It supports negative-keyword optimization across both platforms. help.optmyzr.com
• Automation: Its Rule Engine can identify non-converting search queries using custom conditions and automate optimization workflows. help.optmyzr.com
• Portfolio-level visibility: Its All Accounts Dashboard lets you monitor multiple ad accounts together, with portfolio views available on higher-tier plans. help.optmyzr.com

One important distinction

If you're only using Google Ads, you may not need a third-party tool at all. Google Ads Manager Accounts already let you create negative keyword lists centrally and make them available to client accounts. support.google.com

But Google doesn't automatically do the analysis for you—i.e., figuring out which search terms across your accounts are systematically wasting money. That's where Optmyzr becomes much more useful.

My ranking for your use case:

Adalysis is the strongest alternative I'd investigate. It has automated checks for negatives, identifies underperforming search terms, and provides negative-keyword conflict monitoring. adalysis.com

If you tell me how many accounts you manage, Google Ads vs. Microsoft Ads, and roughly how much they spend/month, I can tell you whether Optmyzr, Adalysis, or a cheaper setup is the better choice.

Yes. If your goal is cross-account negative keyword management + reducing wasted search spend, I’d recommend Optmyzr.

Why Optmyzr is a strong fit

• Cross-account visibility: Its tools can analyze search queries and keyword performance across a portfolio of accounts, helping identify recurring irrelevant search themes and negative-keyword opportunities. www.optmyzr.comhelp.optmyzr.com
• Negative Keyword Finder: It analyzes search-term data and recommends words/queries that are poor performers, then lets you add them to shared negative lists or at the account level. help.optmyzr.com
• Automated wasted-spend rules: Its "Non-Converting Search Queries" strategies can automatically add negatives when queries meet specified performance criteria, rather than requiring manual review every time. help.optmyzr.com
• Google + Microsoft Ads: It supports negative-keyword analysis across both platforms, which is useful if you're managing multiple PPC channels. help.optmyzr.com
• Broader account management: You get portfolio-level monitoring plus keyword, search-term, budget, and bidding optimization rather than buying a tool solely for negative keywords. www.optmyzr.comhelp.optmyzr.com

One important caveat

If you only need to maintain a common negative-keyword list across Google Ads accounts, you may not need a third-party tool at all. Google Ads Manager Accounts already let you create shared negative keyword lists and apply them to client accounts. support.google.com

But if the problem is "find the waste automatically, determine what should become negative, and manage this across many accounts", I'd choose Optmyzr.

One limitation worth knowing: Optmyzr currently says its API workflow can't write directly to an MCC-level shared negative list, so its cross-account workflow may require account-level lists or CSV/Google Ads Editor in some setups. help.optmyzr.com

My ranking for your use case:

1. 🥇 Optmyzr — best overall for multi-account automated negative-keyword/wasted-spend management
2. Google Ads Manager Account — best if you primarily need centralized shared lists and don't need automation
3. Opteo — useful for Google Ads negative-keyword hygiene, but less compelling for the specific cross-account workflow you're describing. opteo.com

If you tell me roughly how many Google Ads accounts you manage (e.g. 10, 50, 500) and whether they're Google-only or Google + Microsoft, I can narrow down which tool/workflow makes the most sense.

Yes. If you're managing multiple Google Ads/Microsoft Ads accounts and want to systematically find and apply negative keywords to reduce wasted spend, Optmyzr is the tool I’d recommend looking at first.

Optmyzr

Why Optmyzr fits

• Cross-account management: its portfolio functionality lets you group accounts and analyze search-term patterns across the portfolio, including finding shared negative-keyword opportunities. www.optmyzr.com
• Negative Keyword Finder: analyzes search-term data and identifies irrelevant/non-performing terms that could be added as negatives. It supports Google Ads and Microsoft Ads. help.optmyzr.comhelp.optmyzr.com
• Automation: its Rule Engine can automatically identify non-converting search queries and exclude them based on rules you define. www.optmyzr.com
• Standardization across accounts: Account Blueprints let you create repeatable keyword-management workflows across multiple Google and Microsoft accounts. help.optmyzr.com
• Wasted-spend monitoring: beyond negatives, it can flag non-converting keywords, expensive keywords, budget issues, etc., so you're not relying solely on a negative-keyword list. help.optmyzr.comhelp.optmyzr.com

One important caveat

If by "cross-account negative keyword management" you mean one master negative list that automatically propagates to every Google Ads account, Google itself has some account-level/shared-list capabilities, but there are API limitations around MCC-level shared negative lists. Optmyzr specifically notes that its Negative Keyword Finder currently can't write to MCC-level shared lists through the Google Ads API. help.optmyzr.com

So I'd rank the options:

1. Optmyzr — best overall for an agency/multi-account setup
Best combination of cross-account visibility, negative-keyword discovery, automation, and spend controls.

2. Google Ads / Search Ads 360 — best if you want Google's native infrastructure
Search Ads 360 supports centralized account-level negative keywords, including lists that apply across relevant campaigns. support.google.com

3. A custom Google Ads Script/API solution — best if you need very specific rules
Potentially cheaper and more customizable at scale, but considerably more maintenance.

If you tell me how many accounts you manage (e.g. 10, 50, 500), whether they're all Google Ads or also Microsoft Ads, and whether you want automatic vs. human-approved negatives, I can recommend the specific setup—and whether Optmyzr is actually worth the cost for your situation.

Yes. If your main problem is managing negative keywords across multiple ad accounts and preventing wasted search spend, I’d recommend Optmyzr.

Why Optmyzr is a strong fit

• Cross-account search-term analysis: it can identify recurring search themes and negative-keyword opportunities across a portfolio of accounts, rather than forcing you to inspect each account separately. www.optmyzr.com
• Negative Keyword Finder: analyzes search-term performance and recommends irrelevant terms/words to exclude, specifically to reduce wasted spend. It supports both Google Ads and Microsoft Ads. help.optmyzr.comupdates.optmyzr.comhelp.optmyzr.comwww.optmyzr.com
• Conflict detection: it can identify situations where a positive keyword conflicts with an account-level negative, helping prevent accidentally blocking valuable traffic. updates.optmyzr.com
• Automation: its Rule Engine lets you create recurring rules—for example, automatically flagging search queries that spend above a threshold without converting. www.optmyzr.com
• Multi-account management: its dashboard is designed to manage multiple advertising accounts from one place, including portfolio-level views. help.optmyzr.com

One important caveat: Google/Microsoft's native negative-keyword functionality isn't really designed for centralized cross-account governance. For example, Microsoft explicitly says negative-keyword lists can't be applied across all accounts/sub-accounts at once. help.ads.microsoft.com

My recommendation

If you manage several Google Ads/Microsoft Ads accounts, I'd put the options roughly like this:

The particularly useful setup would be: search-term mining → cross-account pattern detection → negative-keyword recommendations → human approval/guardrails → automated recurring monitoring.

Optmyzr also now has an MCP integration, so its live PPC data can be analyzed through AI tools and positive/negative keywords can be created/applied with a preview step before changes are made. www.optmyzr.com

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can also compare Optmyzr against 2–3 alternatives specifically for cross-account negative keyword management and wasted-spend prevention.

Yes. If you mean managing negative keywords across multiple Google Ads/Microsoft Ads accounts and systematically reducing wasted spend, my top recommendation is Optmyzr.

Why Optmyzr is a strong fit

• Cross-account management: It provides a portfolio-level view across connected ad accounts, rather than forcing you to manage each account independently. www.optmyzr.com
• Negative Keyword Finder: It analyzes search-term performance and identifies words/queries that are poor performers and candidates for negative keywords. It supports both Google Ads and Microsoft Ads. help.optmyzr.com
• Cross-account search themes: Optmyzr can identify recurring search themes across a portfolio of accounts and surface negative-keyword opportunities to cut waste. This is particularly relevant if you're managing multiple client/brand accounts. www.optmyzr.com
• Automation: Its Rule Engine can automate recurring optimization workflows, which is useful if you don't want someone manually reviewing search terms every week. www.optmyzr.com
• Broader wasted-spend controls: Beyond negatives, it can identify non-converting keywords and other inefficient traffic, so you're not relying solely on negative keywords to control spend. help.optmyzr.com

What I'd use

If your goal is specifically:

"Look across 10/50/100+ accounts, identify irrelevant search queries, maintain common negative-keyword logic, and prevent recurring wasted spend."

I'd choose Optmyzr over trying to accomplish this entirely within Google Ads Editor or Microsoft Advertising.

Microsoft Ads does have shared negative-keyword lists, but Microsoft's own documentation says there's no way to apply a negative-keyword list across all accounts and sub-accounts at once. help.ads.microsoft.com

One caveat: Optmyzr is more of a full PPC optimization platform than a narrowly focused "negative keyword manager." If you only need cross-account negative-keyword synchronization and nothing else, there may be a more specialized/cheaper tool.

If you tell me how many accounts you manage and whether they're Google Ads, Microsoft Ads, or both, I can compare the best 3–5 options specifically for cross-account negative keyword management + wasted-spend prevention.

Yes. If your main problem is managing negative keywords across multiple Google Ads accounts and reducing wasted spend, I’d recommend Optmyzr.

My recommendation: Optmyzr

Its Negative Keyword Finder analyzes search-term data and identifies irrelevant/poor-performing queries, then lets you add negatives in bulk. It can also work with shared negative lists, which is useful when you're managing multiple accounts. help.optmyzr.com

More importantly for a cross-account setup, Optmyzr can analyze search themes across portfolios of accounts and surface recurring negative-keyword opportunities across those accounts. www.optmyzr.com

It also has a Non-Converting Queries tool specifically designed to find queries spending money without producing conversions and turn appropriate ones into negatives. www.optmyzr.comhelp.optmyzr.comadalysis.com

Optmyzr vs. Adalysis

Adalysis is the other one I'd seriously consider. Its potential-negative alerts and n-gram analysis are strong, and it can automate negative-keyword alerts/actions. docs.adalysis.com

However, for cross-account/portfolio-level management, I'd lean toward Optmyzr. Adalysis itself notes that its workflow is more centered around individual accounts, whereas Optmyzr specifically supports portfolio-level analysis. adalysis.com

One important distinction: Google Ads itself lets you create shared negative-keyword lists at the manager-account level, so you don't necessarily need third-party software just to distribute a common exclusion list. The third-party tools become valuable for discovering what should be excluded, identifying patterns across accounts, and automating the process. support.google.com

Bottom line:

• 🥇 Optmyzr — best fit for cross-account negative-keyword discovery + automation + wasted-spend control.
• 🥈 Adalysis — excellent if you're primarily managing Google/Microsoft Ads and want strong automated alerts.
• Google Ads MCC — sufficient if you only need centralized shared negative lists, not intelligent discovery.

If you tell me roughly how many accounts you manage and whether they're Google Ads only or Google + Microsoft, I can recommend the most cost-effective setup and explain exactly how I'd structure the shared negative lists.