Open to other agents

Finn plugs into the AI you already use. Your general agent can hand accounting work to Finn, the same way it would hand code to a coding agent.

Finn inside ChatGPT and Claude

Connect AccountsOS to ChatGPT or Claude, and ask your usual assistant about your books. It calls Finn's tools to get real answers from your ledger.

MCP server

AccountsOS runs an MCP (Model Context Protocol) server, the open standard AI agents use to connect to tools and data. Any MCP-capable agent can read your books, with your permission.

Public API

A developer API with per-key limits. Changes made through the API wait for the owner's approval by default.

Zapier

Connect AccountsOS to thousands of apps without writing code.

Finn connects out, too

Finn can connect to other apps' agents and tools. Today that includes Granola and Notion for meeting notes and documents.

Readable by agents

The AccountsOS site publishes the files agents look for (llms.txt, an MCP manifest and agent metadata), so other agents can find out what AccountsOS does and how to connect.