Keyword Tool MCP Server

What is Keyword Tool MCP Server?

The Keyword Tool MCP server gives AI assistants free keyword research from Google and Bing, with no signup or API key: enter a seed keyword and get suggestions for SEO, content planning or PPC. This listing covers the Guest endpoint, https://mcp.keywordtool.io/guest.

Keyword Tool (keywordtool.io) is a keyword research product whose Google and Bing search volume comes from Google Keyword Planner and Bing Keyword Planner. It is available through its web interface, an API and MCP. The Guest MCP server is the free, rate-limited entry point; a separate Pro MCP server at https://mcp.keywordtool.io adds search volume for keyword lists, competitor analysis and full metrics for Keyword Tool Pro subscribers.

How to use Keyword Tool MCP Server?

Nothing to sign up for: add the Guest URL to your MCP client. Guest usage is limited to 60 requests per hour and 120 per day, according to Keyword Tool.

Server URL:

https://mcp.keywordtool.io/guest

Claude Code

claude mcp add --transport http keywordtool-guest https://mcp.keywordtool.io/guest

Claude Desktop

Open Settings, then Connectors, choose Add custom connector, name it Keyword Tool Guest and enter https://mcp.keywordtool.io/guest as the remote MCP server URL. Keyword Tool is also listed in Claude's built-in Connectors directory. For older setups, Keyword Tool documents a config-file entry that runs npx -y mcp-remote https://mcp.keywordtool.io/guest (Node.js 18+).

Cursor

{
  "mcpServers": {
    "keywordtool": {
      "url": "https://mcp.keywordtool.io/guest"
    }
  }
}

Add this to ~/.cursor/mcp.json.

VS Code

{
  "servers": {
    "keywordtool-guest": {
      "type": "http",
      "url": "https://mcp.keywordtool.io/guest"
    }
  }
}

Add this to .vscode/mcp.json and start the server.

To upgrade to Pro, point your client at https://mcp.keywordtool.io instead; your browser opens to log in and authorize with a Keyword Tool Pro account.

Key features of Keyword Tool MCP Server

• Free and anonymous: no account, signup or API key.
• Keyword suggestions from Google and Bing for a seed keyword.
• Volume, trend and competition for the first 5 keywords when the data is cached, plus CPC on Bing and top-of-page bid range on Google.
• Remaining suggestions return keyword text only.
• Built-in quota check so the assistant can see how many guest requests remain.
• A documented parameter reference (countries, languages, categories, metrics locations) at keywordtool.io/api.md?scope=mcp.
• A clear upgrade path to the Pro MCP server with the same client setup.

Keyword Tool MCP Server tools

The Guest server exposes two tools:

• Research: keywordtool-suggestions-guest generates keyword ideas from a seed keyword. The first 5 results include volume, trend, competition, CPC (Bing only) and top-of-page bid (Google only) when cached; top_of_page_bid_low and top_of_page_bid_high form a Google Ads bid range, which is a different metric from CPC.
• Quota: keywordtool-quota-guest reports how many guest keyword requests you have used and how many remain out of the hourly and daily limits.

The Pro server adds keywordtool-suggestions, keywordtool-search-volume (up to 1,000 keywords), keywordtool-analyze-competitors (Google only) and keywordtool-quota.

Use cases of Keyword Tool MCP Server

• Blog planning: "Find long-tail keyword ideas for 'standing desk' and group them by intent."
• Quick volume check: "What are the top suggestions for 'ai note taker' on Google, with volume and trend?"
• PPC brainstorming: "Give me Bing keyword ideas for 'project management software' with CPC where available."
• Content briefs: "Suggest keywords around 'meal prep' and draft an outline using the top five."
• Staying within limits: "How many Keyword Tool guest requests do I have left today?"

Troubleshooting Keyword Tool MCP Server

• Requests start failing. You may have hit the guest limits of 60 requests per hour or 120 per day; call keywordtool-quota-guest to check.
• Only keyword text, no numbers. Metrics are included only for the first 5 suggestions and only when cached. Use Pro for full metrics.
• Incomplete data. Keyword Tool notes partial results are not counted against quota and recommends retrying.
• Need search volume for your own list. That is the Pro-only keywordtool-search-volume tool on https://mcp.keywordtool.io.