Flagbearer for ChatGPT

dev.flagbearer/flagbearer

Feature flags for coding agents: create flags, roll them out gradually and write the flag code.

client:ChatGPT transport:streamable-http tools:9

Install Flagbearer in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.flagbearer.dev

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