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mcp-public-apis

mcp-public-apis

by josephsenior

mcp-public-apis

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

License: MIT MCP Compatible Works with Claude Works with Cursor Works with Windsurf Works with Cline

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


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

Related MCP server: mcpify

Installation

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

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"]
    }
  }
}

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

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

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

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

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

{
  "public-apis": {
    "command": "npx",
    "args": ["mcp-public-apis"]
  }
}
git clone https://github.com/josephsenior/pblic-apis-mcp-server
cd pblic-apis-mcp-server
npm install
npm run build
node dist/index.js

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)


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).


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.


License

MIT

Available Tools

7 tools
compare_apisA

Compare all APIs within a category side by side, with a summary of auth and HTTPS support.

Inputs: category (required), limit.

find_no_auth_apisB

Returns APIs that require zero authentication, optionally filtered by category.

Inputs: category, httpsOnly, limit.

generate_snippetB

Generates ready-to-use curl, fetch, and axios code snippets for calling a given API endpoint.

Inputs: url (required), apiKey, apiKeyParam, headers.

get_api_detailA

Get full details about a specific API by name.

Inputs: name (required).

get_categoriesA

Returns all available API categories with the number of APIs in each.

Inputs: no named parameters.

probe_apiB

Makes a safe live HTTP GET request to a given API endpoint and returns the response status, shape, and latency.

Inputs: url (required), apiKey, apiKeyParam, timeoutMs.

search_apisA

Search the public-apis list by keyword, category, auth type, and HTTPS support.

Inputs: query, category, auth, httpsOnly, +1 more.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    TDQS

    A3.9/5.0

    Scored across 7 tools

    Disambiguation5/5

    Each tool has a clear, distinct purpose: comparing APIs, finding auth-free ones, generating code snippets, getting details, listing categories, probing endpoints, and searching. No overlap.

    Naming Consistency5/5

    All tool names follow a consistent verb_noun pattern in snake_case (e.g., compare_apis, find_no_auth_apis, generate_snippet), making them predictable and easy to understand.

    Tool Count5/5

    With 7 tools, the set is well-scoped for browsing and testing public APIs. Each tool adds distinct value without redundancy or over-engineering.

    Completeness5/5

    The tool set covers the full workflow: discovery (search, categories, detail), analysis (compare, no-auth filter), testing (probe), and code generation (snippet). No obvious gaps for a read-only API directory.

    Maintenance

    ActivityInactive
    ResponsivenessNo recent community issues

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