Epa Echo for ChatGPT

io.github.pipeworx-io/epa-echo

EPA ECHO MCP — wraps EPA ECHO Web Services (free, no auth)

client:ChatGPT transport:streamable-http

Install Epa Echo in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://gateway.pipeworx.io/epa-echo/mcp

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