json schema validator for ChatGPT

io.github.ryuamarines/json-schema-validator

Validates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).

client:ChatGPT transport:streamable-http tools:1

Install json schema validator in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://faceted-napped-debtless.ngrok-free.dev/json-schema-validator/mcp

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