PublicAPIs.io for Claude.ai

io.publicapis/directory

Search 1,500+ public APIs with docs, code and auth/free-tier filters; list or sponsor your API.

client:Claude.ai transport:streamable-http tools:8

Install PublicAPIs.io in Claude.ai

Settings → Connectors → Add custom connector

https://publicapis.io/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

search_apis
get_api
get_quickstart
compare_apis
list_offerings
start_deal
send_message
get_deal

PublicAPIs.io in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

PublicAPIs.io MCP server