MCP Selection Lab for ChatGPT

io.github.changhuliu/mcp-selection-lab

Benchmark MCP tool selection with metadata-only routing, collision, abstention, and holdout checks.

client:ChatGPT transport:streamable-http tools:3

Install MCP Selection Lab in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp-selection-lab-production.up.railway.app/mcp

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