# WebKnox > WebKnox is an API that answers questions from chat apps, assistants and displays with sourced cards: weather, nutrition, recipes, comparisons with photos, translations, maths, media and more. The free plan includes 50 answers a day. WebKnox is also a remote MCP server, so AI apps such as Claude and ChatGPT show its cards right in the chat. ## Docs - [Quickstart](https://webknox.com/docs): get an API key, ask a first question and render the answer with the web component - [API reference](https://webknox.com/docs/reference): every field of the Answers API v2, the answer envelope, errors and rate limits - [Rendering](https://webknox.com/docs/rendering): the web component, hosted embeds and images - [Card types](https://webknox.com/docs/cards): every card type with its JSON Schema and a recorded example - [WebKnox in AI apps (MCP)](https://webknox.com/docs/mcp): add WebKnox to Claude, ChatGPT, Claude Code, Codex, Cursor or VS Code ## MCP server - Endpoint: `https://mcp.webknox.com/mcp` (Streamable HTTP), one tool `ask_webknox`; listed in the official MCP Registry as `com.webknox/webknox` - No sign-in for 10 answers with a card a day; after that, sign in with a WebKnox account (OAuth) or send an API key ## More - [Answer Lab](https://webknox.com/lab): try every card type, theme and layout live - [Pricing](https://webknox.com/pricing)