Is the Keyword Research API MCP server free to use?

Yes. Keyword Research API is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Is the Keyword Research API MCP server free to use?

Yes. Keyword Research API is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Keyword Research API

SEO keyword research with Google Suggest, intent scoring, long-tail discovery. x402.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "keyword-research-api": {
      "command": "npx",
      "args": [
        "-y",
        "keyword-research-api"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Keyword Research API

SEO keyword research -- Google Suggest, intent classification, long-tail discovery, related queries. Content planning. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

config.json

{
  "mcpServers": {
    "keyword-research": {
      "url": "https://keyword-research.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

Terminal

curl "https://keyword-research.api.klymax402.com/api/keywords?query=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
`seo_research_keywords`	GET	`/api/keywords`	$0.02	Research keywords with Google autocomplete suggestions, related queries, and intent classification
`seo_research_keywords`	POST	`/api/keywords`	$0.02	Research keywords with Google autocomplete suggestions, related queries, and intent classification (POST variant)

`seo_research_keywords`

Use this when you need keyword ideas, SEO research, or content planning data for a topic. Returns keyword suggestions and intent data in JSON.

Parameters

Name	Type	Required	Description
`query`	string	yes	The seed keyword or phrase to research (e.g. 'bitcoin trading', 'best crm software')

Example response:

config.json

{"query":"bitcoin trading","suggestions":["bitcoin trading platform","bitcoin trading bot","bitcoin trading for beginners"],"relatedQueries":{"vs":["bitcoin trading vs investing"],"howTo":["how to start bitcoin trading"]},"longTailKeywords":["best bitcoin trading app 2026","bitcoin trading strategy for beginners"],"searchIntent":"commercial","totalKeywords":47}

When to use: writing blog posts, FOR SEO content strategy, topic cluster planning, content gap analysis, and competitive keyword research.

Not for: page SEO audit (use seo_audit_page), content extraction (use web_scrape_to_markdown), domain intelligence (use domain_lookup_intelligence).

`seo_research_keywords`

Use this when you need keyword ideas, SEO research, or content planning data for a topic. Returns keyword suggestions and intent data in JSON. POST variant of seo_research_keywords -- same params passed as JSON body instead of query string.

Parameters

Name	Type	Required	Description
`query`	string	yes	The seed keyword or phrase to research (e.g. 'bitcoin trading', 'best crm software')

Example response:

config.json

{"query":"bitcoin trading","suggestions":["bitcoin trading platform","bitcoin trading bot","bitcoin trading for beginners"],"relatedQueries":{"vs":["bitcoin trading vs investing"],"howTo":["how to start bitcoin trading"]},"longTailKeywords":["best bitcoin trading app 2026","bitcoin trading strategy for beginners"],"searchIntent":"commercial","totalKeywords":47}

When to use: writing blog posts, FOR SEO content strategy, topic cluster planning, content gap analysis, and competitive keyword research.

Not for: page SEO audit (use seo_audit_page), content extraction (use web_scrape_to_markdown), domain intelligence (use domain_lookup_intelligence).

Example agent prompts

"Keyword ideas, SEO research, or content planning data for a topic"
"Keyword ideas, SEO research, or content planning data for a topic"

Payment

Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

Catalog: https://klymax402.com/llms.txt
Full API reference: https://klymax402.com/llms-full.txt
Live stats: https://klymax402.com/stats

License

MIT

Related MCP Servers

View all in Finance & Fintech View all alternatives

Frequently Asked Questions about Keyword Research API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "keyword-research-api": { "command": "npx", "args": ["-y", "Keyword Research API"] } }

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Technical Specs & Signals

CategoryFinance & Fintech

0/4 checks healthy over the last 6h

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Keyword Research API →Install in Claude Desktop Install in Cursor Install in VS Code

Keyword Research API

SEO keyword research with Google Suggest, intent scoring, long-tail discovery. x402.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "keyword-research-api": {
      "command": "npx",
      "args": [
        "-y",
        "keyword-research-api"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Keyword Research API

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

config.json

{
  "mcpServers": {
    "keyword-research": {
      "url": "https://keyword-research.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

Terminal

curl "https://keyword-research.api.klymax402.com/api/keywords?query=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
`seo_research_keywords`	GET	`/api/keywords`	$0.02	Research keywords with Google autocomplete suggestions, related queries, and intent classification
`seo_research_keywords`	POST	`/api/keywords`	$0.02	Research keywords with Google autocomplete suggestions, related queries, and intent classification (POST variant)

`seo_research_keywords`

Use this when you need keyword ideas, SEO research, or content planning data for a topic. Returns keyword suggestions and intent data in JSON.

Parameters

Name	Type	Required	Description
`query`	string	yes	The seed keyword or phrase to research (e.g. 'bitcoin trading', 'best crm software')

Example response:

config.json

{"query":"bitcoin trading","suggestions":["bitcoin trading platform","bitcoin trading bot","bitcoin trading for beginners"],"relatedQueries":{"vs":["bitcoin trading vs investing"],"howTo":["how to start bitcoin trading"]},"longTailKeywords":["best bitcoin trading app 2026","bitcoin trading strategy for beginners"],"searchIntent":"commercial","totalKeywords":47}

When to use: writing blog posts, FOR SEO content strategy, topic cluster planning, content gap analysis, and competitive keyword research.

Not for: page SEO audit (use seo_audit_page), content extraction (use web_scrape_to_markdown), domain intelligence (use domain_lookup_intelligence).

`seo_research_keywords`

Parameters

Name	Type	Required	Description
`query`	string	yes	The seed keyword or phrase to research (e.g. 'bitcoin trading', 'best crm software')

Example response:

config.json

{"query":"bitcoin trading","suggestions":["bitcoin trading platform","bitcoin trading bot","bitcoin trading for beginners"],"relatedQueries":{"vs":["bitcoin trading vs investing"],"howTo":["how to start bitcoin trading"]},"longTailKeywords":["best bitcoin trading app 2026","bitcoin trading strategy for beginners"],"searchIntent":"commercial","totalKeywords":47}

When to use: writing blog posts, FOR SEO content strategy, topic cluster planning, content gap analysis, and competitive keyword research.

Not for: page SEO audit (use seo_audit_page), content extraction (use web_scrape_to_markdown), domain intelligence (use domain_lookup_intelligence).

Example agent prompts

"Keyword ideas, SEO research, or content planning data for a topic"
"Keyword ideas, SEO research, or content planning data for a topic"

Payment

Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

Catalog: https://klymax402.com/llms.txt
Full API reference: https://klymax402.com/llms-full.txt
Live stats: https://klymax402.com/stats

License

MIT

Related MCP Servers

View all in Finance & Fintech View all alternatives

Frequently Asked Questions about Keyword Research API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "keyword-research-api": { "command": "npx", "args": ["-y", "Keyword Research API"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/keyword-research-api?style=directory)](https://allmcps.com/mcp/keyword-research-api)

HTML Embed

<a href="https://allmcps.com/mcp/keyword-research-api"><img src="https://allmcps.com/api/badge/keyword-research-api?style=directory" alt="Keyword Research API on AllMCPs" /></a>

Technical Specs & Signals

CategoryFinance & Fintech

0/4 checks healthy over the last 6h

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

★ Featured

AllMCPs Server

Explore Server →

Own this project?

This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to get the verified badge and attach your website.

Free dofollow backlink: after claiming, verify your product site and place a dofollow AllMCPs badge — we recheck it stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Keyword Research API →Install in Claude Desktop Install in Cursor Install in VS Code