Keyword Tool Review
Multi-platform keyword research tool generating long-tail suggestions from autocomplete data across 15 search engines and marketplaces
Keyword Tool is the most thorough autocomplete-based keyword research tool available, pulling long-tail suggestions from Google, YouTube, Bing, Amazon, TikTok, and more in one interface. The free version is genuinely useful for keyword discovery without volume data. The MCP server integration is a standout for AI-assisted workflows. Paid plans are expensive relative to single-purpose use, and there is no white-label option, which limits its value for agencies delivering branded client reports.
Pros and cons
- Covers 15 platforms including Google, YouTube, Amazon, Bing, TikTok, and Perplexity, making it the most comprehensive cross-channel keyword tool in this price range
- Generates long-tail keywords directly from autocomplete, which surfaces real search intent and niche variations that database-driven tools often miss
- API and MCP server access give developers and AI-workflow users a direct integration path without building autocomplete scrapers themselves
- Entry paid plan at $88 per month ($68 billed annually) is expensive for a single-purpose tool with no rank tracking or site audit functionality
- No white-label features on any plan, which limits its value for agencies who need branded keyword reports for clients
- Free tier provides keyword suggestions but no volume, CPC, or competition data, making it genuinely useful only for initial ideation without a paid upgrade
What is Keyword Tool?
Keyword Tool is a keyword research platform built around autocomplete data from search engines and marketplaces. Rather than relying on keyword databases that model search behavior from third-party panels, it pulls suggestions directly from the autocomplete systems of the platforms it supports. This means the keywords it surfaces reflect actual queries that real users are typing, which can surface long-tail opportunities that database-driven tools miss.
The platform supports 15 different sources including Google, YouTube, Bing, Amazon, eBay, the App Store, Play Store, Instagram, Twitter, Pinterest, TikTok, Etsy, and Perplexity. For teams that do keyword research across multiple channels, particularly e-commerce teams tracking both Google and Amazon, or content teams targeting YouTube alongside traditional search, this breadth is the primary differentiator. The platform also offers an API and an MCP server, which allows developers to access keyword data programmatically within AI-assisted workflows.
Core features
Multi-platform keyword research across 15 search engines
Enter a seed keyword and Keyword Tool pulls autocomplete suggestions from whichever platform you select: Google, YouTube, Amazon, Bing, eBay, App Store, Play Store, Instagram, TikTok, Pinterest, Etsy, and Perplexity are all supported. Switching platforms in the same session means you can research the same topic across channels without juggling multiple tools.
Long-tail keyword generation from Google Autocomplete
Unlike tools that pull from keyword databases, Keyword Tool queries autocomplete APIs directly. This tends to surface highly specific long-tail variations that reflect genuine user search behavior, including question-based queries, local modifiers, and niche product variants. The result is a keyword list that maps to real user language rather than tool-generated combinations.
Search volume, CPC, and competition scoring
On paid plans, Keyword Tool adds search volume, average CPC, and competition data to each keyword. These metrics are sourced from Google Ads data and allow you to prioritise keywords by traffic potential and commercial value rather than treating all autocomplete suggestions equally.
API and MCP server access
Keyword Tool provides an API for integrating keyword data into custom applications and dashboards. It also offers an MCP server, which enables direct access to keyword research capabilities from AI assistants and developer tools that support the Model Context Protocol. This is a meaningful differentiator for teams building AI-assisted content or research workflows.
Bulk keyword upload and CSV export
Upload a list of keywords and get volume, CPC, and competition data back in one batch request. Results can be exported as CSV or Excel files, which fits into standard keyword planning workflows without requiring manual copy-and-paste from the interface.
Pricing
| Feature | Free Free | Starter $88/month ($68/mo annual) | Growth $188/month ($148/mo annual) | Scale $388/month ($308/mo annual) | Agency $788/month ($628/mo annual) |
|---|---|---|---|---|---|
| Keyword suggestions | ✓ | ✓ | ✓ | ✓ | ✓ |
| Search volume data | ✗ | ✓ | ✓ | ✓ | ✓ |
| CPC and competition data | ✗ | ✓ | ✓ | ✓ | ✓ |
| Bulk keyword upload | ✗ | ✓ | ✓ | ✓ | ✓ |
| CSV and Excel export | ✗ | ✓ | ✓ | ✓ | ✓ |
| API access | ✗ | ✓ | ✓ | ✓ | ✓ |
| MCP server access | ✗ | ✗ | ✓ | ✓ | ✓ |
| White-label reports | ✗ | ✗ | ✗ | ✗ | ✗ |
Who it is for
Teams that need to research keywords for both organic Google traffic and Amazon product listings can cover both in one tool, reducing the number of subscriptions required for multi-channel keyword strategy.
Content marketers who produce video alongside articles can use Keyword Tool to find search-optimised terms for YouTube videos using the same interface they use for Google keyword research.
Developers who want to integrate keyword suggestion data into their own applications or AI-assisted workflows can use the Keyword Tool API and MCP server rather than building autocomplete scrapers themselves.
Verdict
Keyword Tool is the most thorough option for autocomplete-based long-tail keyword research across multiple platforms, and the MCP server integration makes it genuinely forward-looking for AI-assisted research workflows. The paid plans are expensive for a tool that does not include rank tracking or auditing, and the free tier is too limited to be a long-term solution. Agencies will also feel the absence of white-label reporting.
Frequently asked questions
Is Keyword Tool free?
Keyword Tool has a free version that provides unlimited keyword suggestions without volume or CPC data. Paid plans starting at $88 a month ($68 billed annually) unlock search volume, CPC, competition data, and bulk export.
Which platforms does Keyword Tool support?
Keyword Tool supports 15 platforms: Google, YouTube, Bing, Amazon, eBay, App Store, Play Store, Instagram, Twitter, Pinterest, TikTok, Etsy, and Perplexity. You can switch between platforms on any research session.
What is the MCP server and who is it for?
The MCP (Model Context Protocol) server allows AI assistants and developer tools that support MCP to access Keyword Tool's keyword suggestion data directly. It is available from the Growth plan up and is designed for developers building AI-assisted keyword research workflows.
Does Keyword Tool show accurate search volumes?
Keyword Tool sources its volume data from Google Ads, which is the same underlying data source as Google Keyword Planner. Volumes are reported as monthly averages and should be treated as directional rather than precise figures, consistent with all third-party keyword tools.
Does Keyword Tool have white-label features for agencies?
No. Keyword Tool does not offer white-label reporting or client-branded exports on any plan. If agency reporting is a requirement, you would need to combine Keyword Tool data with a separate reporting tool.