FixMyJSON for ChatGPT

io.github.tonbifun/fixmyjson

Repair broken LLM JSON and check it against a JSON Schema. Flags cut-off output. Free trial.

client:ChatGPT transport:streamable-http tools:1

Install FixMyJSON in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://fixmyjson-api.onrender.com/mcp

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