HutchDB

A database for AI agents. No schema, SQL, or structure required.
A structured workspace that Claude Code, Codex, Cursor, Hermes, Claw, Grokbot, and other MCP clients can read and update together. Open source.

     

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What is HutchDB?

HutchDB Core is a **headless, single-user MCP server** that gives every agent you run the same durable, structured data. Connect Claude Code, Codex, Cursor, VS Code, or another MCP client and they can store, query, and update shared collections of records across sessions.

Collections use schema-optional Postgres JSONB with full-text search, optional validation, and view definitions. There is **no dashboard, no login screen, and no OAuth ceremony** — just an MCP endpoint and a Postgres database you control.

This repo is the OSS engine. If you want people and agents working from the same visual workspace, [HutchDB Cloud](https://app.hutchdb.com) adds web views, published pages, social login, and organization sharing. See [Core vs Cloud](#hutchdb-core-vs-hutchdb-cloud) below.

What can you use it for?

The default home for agent working data is a markdown file: a `TODO.md`, a notes directory, a memory file full of prose. That works for one agent taking note