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Model Context Protocol

Connect AI agents to 64 tools
across 34 APIs in one step

The API Clearinghouse MCP server exposes every API in the catalog as a native tool for Claude, Cursor, and any MCP-compatible AI agent. Connect in trial mode with no key, or use a real key for full production access.

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Try MCP now

Connect the MCP server with no API key. Discover capabilities, run live demos, and request access — all from inside your agent conversation.

No key needed ↓

🔬

Web demos first

Run live multi-API demos in the browser — no signup needed. The structured JSON you see is exactly what an MCP-connected agent receives when it calls a tool.

See it work →

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Already have a key?

Copy your config below, replace YOUR_API_KEY, and restart Claude Desktop or Cursor. That's it.

Setup guide below ↓

Trial Mode — no API key required

Connect now, no key needed

Add this config to Claude Desktop or Cursor. You'll get instant access to discovery tools, live demos, and an in-conversation access request flow — no signup required.

{
  "mcpServers": {
    "clearinghouse": {
      "url": "https://mcp.apiclearinghouse.com/mcp"
    }
  }
}

What's available in trial mode

✓ get_started — orientation and next steps
✓ get_catalog — browse all 34 APIs
✓ search_apis — search by name or category
✓ find_tools — ranked API recommendations
✓ list_demos — see available demos
✓ run_demo — run live multi-API demos
✓ request_access — join the beta in-conversation

Starter prompts to try

“What can you do with this MCP server?”
“Find tools for crypto and weather.”
“Run the sports-signal demo.”
“Request beta access for me.”

Full execution of all 64 tools requires an API key. Request access →

What is MCP?

The Model Context Protocol (MCP) is an open standard by Anthropic that lets AI assistants call external tools and APIs. When you connect an MCP server to Claude Desktop or an AI agent, it automatically discovers available tools and can call them in response to natural language requests.

API Clearinghouse runs a production MCP server at mcp.apiclearinghouse.com. Every API in the catalog becomes a tool — weather, crypto prices, Pokémon data, country info, and more. Tool discovery is public; tool execution requires an API key.

Quick Start

Get access

API Clearinghouse is in private beta. Join the waitlist or call request_access in trial mode to submit from inside your agent conversation. Once invited, sign up and generate an API key from your dashboard — it looks like chk_live_...

Configure Claude Desktop

Open your Claude Desktop config file and add the clearinghouse server:

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

{
  "mcpServers": {
    "clearinghouse": {
      "url": "https://mcp.apiclearinghouse.com/mcp",
      "headers": {
        "X-Api-Key": "YOUR_API_KEY"
      }
    }
  }
}

Security note: Replace YOUR_API_KEY with your real key after creating the file. Never commit a config file containing a real API key to version control — add claude_desktop_config.json to your .gitignore if your home directory is tracked. Restart Claude Desktop after saving.

Or configure Cursor

Add to your .cursor/mcp.json or Cursor settings:

{
  "mcpServers": {
    "clearinghouse": {
      "url": "https://mcp.apiclearinghouse.com/mcp",
      "headers": {
        "X-Api-Key": "YOUR_API_KEY"
      }
    }
  }
}

If .cursor/mcp.json is inside a tracked repo, add it to .gitignore before adding your real key.

Ask Claude a question

Open a new Claude Desktop chat and try:

“What's the current weather in Tokyo?”

“What are the public holidays in Germany this year?”

“What is Pikachu's base stats?”

“Show me the current Bitcoin price.”

Claude will automatically call the relevant clearinghouse tool and return real data.

Using with the Anthropic SDK

Connect the MCP server programmatically in agent code using the Anthropic SDK. Store your key in an environment variable — never hardcode it:

import Anthropic from '@anthropic-ai/sdk'

const client = new Anthropic()

const response = await client.beta.messages.create({
  model: 'claude-opus-4-6',
  max_tokens: 1024,
  mcp_servers: [
    {
      type: 'url',
      url: 'https://mcp.apiclearinghouse.com/mcp',
      name: 'clearinghouse',
      authorization_token: process.env.CLEARINGHOUSE_API_KEY,
    }
  ],
  messages: [
    {
      role: 'user',
      content: 'What is the weather in Paris right now?'
    }
  ]
})

console.log(response.content)

Requires @anthropic-ai/sdk v0.36+. See the Anthropic MCP docs for more details.

Available Tools

Every active API in the catalog is registered as an MCP tool. Tools are named clearinghouse_{api_slug}_{endpoint}. Tool discovery (tools/list) is public. Tool execution requires an API key.

Tool name	Description
clearinghouse_weather_current	Current weather by lat/lon
clearinghouse_geocoding_search	Convert address to coordinates
clearinghouse_crypto-prices_price	Live crypto prices (BTC, ETH, ...)
clearinghouse_countries_name_{name}	Country data by name
clearinghouse_pokemon_pokemon_{name}	Pokémon stats and types
clearinghouse_public-holidays_holidays_{year}_{code}	Public holidays by country
clearinghouse_air-quality_current	Air quality index by location
+ 57 more tools	See full API catalog

Run GET /v1/apis for the full list.

Ready to connect your AI agent?

Get a free API key and start calling 64 tools across 34 APIs from Claude in under 2 minutes.

Join the beta See live demos first

Connect AI agents to 64 toolsacross 34 APIs in one step