mcp-public-apis

Give your AI coding agent the ability to find, test, and integrate any of 1,500+ free public APIs — instantly.

Data sourced from the community-maintained public-apis list · synced daily

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What is this?

An MCP (Model Context Protocol) server that gives AI coding agents real-time access to the public-apis dataset. Instead of copy-pasting API documentation, your agent can search, probe, and generate working code — all in one conversation.

You:   "Find me a free weather API with no auth that supports HTTPS"
Agent: [calls search_apis] → returns top matches with auth/HTTPS/CORS details

You:   "Test the first one — show me what the response looks like"
Agent: [calls probe_api] → live GET request, returns status + response shape

You:   "Generate an axios snippet for it"
Agent: [calls generate_snippet] → ready-to-paste curl, fetch, and axios code

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Installation

Pick the config for your client and paste it in. No build step required — npx handles everything.

Claude Desktop

File: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS)
File: %APPDATA%\Claude\claude_desktop_config.json (Windows)

{
  "mcpServers": {
    "public-apis": {
      "command": "npx",
      "args": ["mcp-public-apis"]
    }
  }
}

Cursor

File: .cursor/mcp.json in your project root (or ~/.cursor/mcp.json globally)

{
  "mcpServers": {
    "public-apis": {
      "command": "npx",
      "args": ["mcp-public-apis"]
    }
  }
}

Windsurf

File: ~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "public-apis": {
      "command": "npx",
      "args": ["mcp-public-apis"]
    }
  }
}

Cline (VS Code)

Open VS Code → Cline sidebar → MCP Servers tab → Add Server → paste:

{
  "public-apis": {
    "command": "npx",
    "args": ["mcp-public-apis"]
  }
}

Local build

git clone https://github.com/josephsenior/pblic-apis-mcp-server
cd pblic-apis-mcp-server
npm install
npm run build
node dist/index.js

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Tools

Tool	What it does	Key parameters
search_apis	Fuzzy-search 1,500+ APIs by keyword, category, auth type, and HTTPS	query, category, auth, httpsOnly, limit
get_categories	List every category with its API count	—
get_api_detail	Full record for one API by name	name
probe_api	Live HTTP GET to any endpoint — returns status, latency, and response preview	url, apiKey, timeoutMs
compare_apis	Side-by-side view of all APIs in a category	category, limit
find_no_auth_apis	Only APIs that need zero authentication	category, httpsOnly, limit
generate_snippet	Paste-ready curl, fetch, and axios snippets	url, apiKey, headers

search_apis parameters

Parameter	Type	Default	Description
query	string	—	Fuzzy-match against API name and description
category	string	—	Exact category name (use get_categories to browse)
auth	"No" | "apiKey" | "OAuth"	—	Filter by auth requirement
httpsOnly	boolean	true	Exclude non-HTTPS APIs
limit	number	5	Max results (1–20)

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How it works

MCP Client (Claude / Cursor / etc.)
        │  JSON-RPC over stdio
        ▼
  mcp-public-apis server
        │
        ├─ In-memory cache (24 h TTL)
        │
        └─ GitHub raw · public-apis/public-apis README.md

1. On first use the server fetches the public-apis README from GitHub, parses every Markdown table row into structured PublicAPI objects, and stores them in a 24-hour in-memory cache.
2. All search and filter operations run locally against that cache — no external call per query.
3. probe_api is the only tool that makes a request to a third-party endpoint (the one you explicitly pass in).

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Data source

All API records come from public-apis/public-apis — a community-maintained list of 1,500+ free APIs across 60+ categories. The data is fetched fresh every 24 hours.

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License

MIT