Trestle MCP by usefulapi for ChatGPT

io.usefulapi/trestle

Validate phone numbers, line types and TCPA litigator risk in Trestle.

client:ChatGPT transport:streamable-http tools:2

Install Trestle MCP by usefulapi in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://trestle.usefulapi.io/mcp

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