MCP Server

The APIs.io catalog is also available to AI agents as a Model Context Protocol server over Streamable HTTP:

Code
https://apis.io/mcp

It's generated from the same OpenAPI contract as the REST API, so the two never drift. Every tool is read-only.

Connect

Point any MCP-capable client at the endpoint. For example, in a client that takes a remote MCP URL:

Code
{
  "mcpServers": {
    "apis-io": {
      "url": "https://apis.io/mcp"
    }
  }
}

The server speaks JSON-RPC: initialize, tools/list, and tools/call.

Tools

apis_io_search is the power tool — find APIs, providers, or tags by free text, tags, providers, artifact types, industry, region, and rating band. Plus drill-down and taxonomy tools:

• find_apis / get_api
• find_providers / get_provider
• find_tags / get_tag
• find_industries / get_industry, find_regions / get_region
• find_ratings / get_provider_rating / get_rating_rubric
• find_artifacts — artifacts of a given type (OpenAPI, AsyncAPI, Postman, …) across the catalog

Code
curl -s https://apis.io/mcp -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

See the API Reference for the underlying operations each tool maps to.