RealWorldAPIs MCP MCP server

An evidence-first API discovery and decision layer for AI agents that connects to the physical world. It allows agents to find, compare, and verify APIs for tasks involving weather, maps, logistics, IoT, and robotics, ensuring access, safety, and execution constraints are met before ranking options.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by RealWorldAPIs

MCP endpoint (Streamable HTTP)

https://mcp.realworldapis.com/mcp

Vendor documentation

What you can do with it

Find APIs for specific agent tasks
Search and compare verified API capabilities
Verify requirement compliance for APIs
Access structured API recommendations

Tools advertised by the last live check:

find_api_for_task
search_apis
search_capabilities
verify_requirement
get_api
compare_apis

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http realworldapis-mcp https://mcp.realworldapis.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add realworldapis-mcp --url https://mcp.realworldapis.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable realworldapis-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "realworldapis-mcp": {
      "url": "https://mcp.realworldapis.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "realworldapis-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.realworldapis.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start realworldapis-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "realworldapis-mcp": {
      "type": "http",
      "url": "https://mcp.realworldapis.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http realworldapis-mcp https://mcp.realworldapis.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "realworldapis-mcp": {
      "url": "https://mcp.realworldapis.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "realworldapis-mcp": {
      "serverUrl": "https://mcp.realworldapis.com/mcp"
    }
  }
}

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