> For the complete documentation index, see [llms.txt](https://docs.whalesync.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.whalesync.com/api.md).

# API

- [MCP server](https://docs.whalesync.com/api/mcp.md): Remote MCP server that lets AI agents create, configure, and monitor Whalesync syncs. Browser sign-in, no API keys.
- [Client setup](https://docs.whalesync.com/api/mcp/setup.md): Add the Whalesync MCP server to Claude, Claude Code, ChatGPT, Codex, Cursor, VS Code, or any other MCP client.
- [Agent quickstart](https://docs.whalesync.com/api/agent-quickstart.md): Guide for AI agents building syncs with the Whalesync API
- [API reference](https://docs.whalesync.com/api/reference.md): Paths, authentication, and conventions for the Whalesync API
- [Error reference](https://docs.whalesync.com/api/errors.md): Handling failures from the Whalesync API