TestLens for ChatGPT

net.bigfloppy.testlens/testlens

Paste code + tests, get a strong/weak verdict with killed/survived mutants. Free API + MCP.

client:ChatGPT transport:streamable-http tools:2

Install TestLens in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://testlens.bigfloppy.net/mcp

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