Esky 🧊

A cold box for your agents' memory. Self-hosted, on your own network.

Esky is a self-hosted MCP memory server for the local network. Any MCP-speaking agent — Claude Code, Codex, the OpenAI Agents SDK — can read and write durable memory over HTTP, with each context kept in its own database.

Agents start every session cold. Esky is the box on the network they all reach into: put a fact in from the laptop, take it out from the desktop, and it is still there next week.

Nothing leaves your network. Embeddings run in-process on ONNX; there is no API key and no outbound call.

Documentation

Guide	Covers
Connecting an agent	Same machine and across the LAN, the standing instruction that makes memory get used, multiple profiles, other MCP clients
Tools and facts	The five tools, fact kinds, the query log
Operations	CLI, configuration, rotating a token, troubleshooting
Security	The token model, why unknown profiles return 401, HTTPS via a reverse proxy, backups
Development	Running the tests, rebuilding the containers

Installing for the first time? Start with the README on GitHub.