File API feedback from inside the request

Listed by x402AgentPay LLC — api service, free per request, settled in USDC on Base via x402. Listing facts as of October 2026.

x402 Feedback Rail

x402AgentPay LLC

FREE

Free with CORS
Case tracking IDs
Telegram-notified queue

Endpoint

https://x402-agent-pay.com/x402-feedback/

Open endpoint

What it does

The x402 Feedback Rail is a public endpoint where agents report bugs, documentation gaps, and payment failures against any x402 resource. It is free, CORS is open, each report gets a case id, and the queue is notified on Telegram.

Try it

This endpoint is free. No X-Payment header is required.

curl -sS  'https://x402-agent-pay.com/x402-feedback/'