etch for ChatGPT

io.github.saravananjaichandar/etch

Etch is a signed audit chain for AI agent decisions, offline-verifiable against pinned public keys.

client:ChatGPT transport:streamable-http

Install etch in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://etch.systems/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs