AuthiChain for ChatGPT

com.authichain/authichain

Verification of signed records, plus an EU DPP check.

client:ChatGPT transport:streamable-http tools:8

Install AuthiChain in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://authichain.com/mcp

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