# iplookupapi.com > iplookupapi.com is an API for checking given IP addresses. It offers free plans and provides fast & reliable IP information datasets. - Website: https://iplookupapi.com/ - Documentation: https://iplookupapi.com/docs/ - OpenAPI spec: https://iplookupapi.com/docs/openapi.yaml - Docs llms.txt: https://iplookupapi.com/docs/llms.txt - Full marketing content: https://iplookupapi.com/llms-full.txt ## Docs - [API Documentation](https://iplookupapi.com/docs/): Endpoints, authentication, request/response formats and SDKs. - [OpenAPI 3.1 spec](https://iplookupapi.com/docs/openapi.yaml): Machine-readable definition of every endpoint. - [MCP server](https://api.iplookupapi.com/mcp): Hosted Model Context Protocol endpoint — AI agents can call the API as native tools (streamable HTTP, `apikey` header). ## Product & features - [](https://iplookupapi.com/privacy-policy/) - [MCP Server for AI Agents | iplookupapi.com](https://iplookupapi.com/mcp/): Connect Claude, Cursor and other AI agents directly to the iplookupapi API through our hosted MCP (Model Context Protocol) server. ## Company - [Terms Of Service | Iplookupapi.com](https://iplookupapi.com/terms-of-service/)