AnchorRegistry for ChatGPT

io.github.anchorregistry/ar-mcp

On-chain provenance lookup for AnchorRegistry. Resolve AR-IDs, hashes, and full trees. Authless.

client:ChatGPT transport:streamable-http tools:3

Install AnchorRegistry in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.anchorregistry.ai/mcp

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