GrantSonar for ChatGPT

io.github.romulusfoundry/grantsonar

Search verified-open US grants (federal, state, foundation). Read-only MCP for AI agents.

client:ChatGPT transport:streamable-http tools:9

Install GrantSonar in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://grantsonar.com/api/mcp

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