Webhook Tester API for ChatGPT
io.github.br0ski777/webhook-tester
Test webhook endpoints — send requests, measure latency, validate responses. x402 micropayment.
client:ChatGPT
transport:sse
Install Webhook Tester API in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://webhook-tester.api.klymax402.com/mcpCustom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs