# watsi documentation

> Guides, API, webhooks and MCP server for the AI agent that answers, qualifies and books your leads on WhatsApp.

Source: https://docs.watsi.ai/en

## All of watsi, in one place

Learn the product, connect your systems through the API, or let an AI agent operate your workspace over MCP.

- [What is watsi?](/what-is-watsi)
    The WhatsApp AI agent and CRM: key concepts and use cases.
- [WhatsApp Coexistence](/whatsapp/coexistence)
    Use the WhatsApp Business app and the AI agent on the same number.
- [Plans and conversations](/getting-started/plans-and-conversations)
    What a conversation is and how many each plan includes.
- [API quickstart](/quickstart)
    Create an API key and make your first call in minutes.
- [Webhooks](/webhooks)
    Receive message, contact and appointment events on your server.
- [MCP server](/mcp)
    Connect Claude, ChatGPT or Cursor to your workspace.
- [Authentication](/guides/authentication)
    API keys, scopes and security best practices.
- [Changelog](/changelog)
    What changed lately in the platform and the API.

## For developers

- [Pagination & filtering](/guides/pagination)
    Walk large lists of conversations and contacts.
- [Error handling](/error-handling)
    Error codes, rate limits and retries.
- [Calendar & booking](/guides/calendar-booking)
    Integrate appointment scheduling over WhatsApp.
- [OpenAPI spec](/spec.json)
    The full API contract in one file.