Exchangerate for ChatGPT
io.github.pipeworx-io/exchangerate
ExchangeRate MCP — wraps open.er-api.com (free, no auth)
client:ChatGPT
transport:streamable-http
Install Exchangerate in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://gateway.pipeworx.io/exchangerate/mcp
Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs