# LifeButler API > REST API and MCP server for LifeButler, the family and group organiser for Germany, Austria and Switzerland: calendar, tasks, lists, documents, smart search and the AI butler. Pro and Premium plans; only owners and admins of a workspace; times in Europe/Berlin. - Base URL: https://api.lifebutler.io/v1 - MCP server: https://api.lifebutler.io/mcp (Streamable HTTP, Bearer key) - Auth: Authorization: Bearer lb_live_… (created in the app: Settings → API & MCP) - OpenAPI 3.1: https://lifebutler.io/developers/openapi.json Every page is Markdown at the URL below; drop ".md" for the HTML page. ## Getting started - [LifeButler API](https://lifebutler.io/developers.md): Read and change your LifeButler workspaces from your own code, automations and AI assistants – REST API and MCP server. - [Authentication](https://lifebutler.io/developers/authentication.md): API keys, how to send them, scopes, expiry and revocation. - [Workspaces, roles & security](https://lifebutler.io/developers/access.md): Which data a key can reach, who may use the API, plan limits, and what other members see. - [Conventions](https://lifebutler.io/developers/conventions.md): Times and time zones, IDs, paging, errors, rate limits and AI credits. ## AI assistants - [MCP server](https://lifebutler.io/developers/mcp.md): Connect Claude, ChatGPT, Cursor, VS Code and other AI assistants to LifeButler with the Model Context Protocol. - [Prompt for your AI coding assistant](https://lifebutler.io/developers/llm-prompt.md): A ready-made prompt that teaches Claude Code, Codex, Cursor, Copilot or Windsurf how to build with the LifeButler API. ## Guides - [Recipes](https://lifebutler.io/developers/recipes.md): Short, complete examples – shopping list from Home Assistant, calendar import, scanning folder, weekly digest. ## API reference - [Overview](https://lifebutler.io/developers/reference.md): all endpoints - [Workspaces](https://lifebutler.io/developers/reference/workspaces.md): The workspaces a key may use, and their members. - [Calendar](https://lifebutler.io/developers/reference/calendar.md): Appointments, including repeating ones. - [Tasks](https://lifebutler.io/developers/reference/tasks.md): To-dos with exact or fuzzy due dates, assignees and repetition. - [Lists](https://lifebutler.io/developers/reference/lists.md): Shopping and to-do lists and their items. - [Documents](https://lifebutler.io/developers/reference/documents.md): Stored files with their AI analysis: search, upload, download. - [Search & Butler](https://lifebutler.io/developers/reference/search-and-butler.md): Smart search by meaning and the AI butler. ## Support - hallo@lifebutler.io