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Bot Bazaar CORS Header Linter for x402 Payments
x402
Bot Bazaar CORS Header Linter for x402 Payments is a paid API for AI agents from bot-bazaar.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Validates CORS response headers to confirm browser and agent x402 clients can send PAYMENT-SIGNATURE and read PAYMENT-REQUIRED / PAYMENT-RESPONSE headers
Price / call$0.01
Success—
StatusUnknown
How this service works
Lint CORS response headers to ensure browser/agent x402 clients can send PAYMENT-SIGNATURE and read PAYMENT-REQUIRED / PAYMENT-RESPONSE.
Output
Returns a structured lint report indicating whether the CORS headers are correctly configured for x402 payment flows, identifying missing or misconfigured headers such as Access-Control-Expose-Headers, Access-Control-Allow-Headers, and specific x402 payment header entries (PAYMENT-SIGNATURE, PAYMENT-REQUIRED, PAYMENT-RESPONSE).
Example use cases
Pre-launch x402 CORS compliance check
“Before I go live, can you check if my x402 API's CORS headers are properly configured for GET requests — specifically whether browsers and agents will be able to send PAYMENT-SIGNATURE and read back PAYMENT-REQUIRED and PAYMENT-RESPONSE?”
Debugging broken x402 browser payments
“My browser-based x402 agent is failing to read payment headers cross-origin — can you lint the CORS setup for a GET request and tell me which headers are missing or misconfigured?”
Validating expose-headers on an x402 DELETE endpoint
“I've set Access-Control-Expose-Headers to 'Content-Type, PAYMENT-RESPONSE' on my server — can you run the CORS header check for a DELETE method and tell me if that's sufficient for x402 compatibility?”
Technical details
Endpoint
GEThttps://bot-bazaar.fly.dev/v1/x402/cors-header-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to verify that an x402-enabled HTTP API correctly exposes and allows payment-related CORS headers before deploying or debugging cross-origin agent/browser payment flows. It is specifically tailored to x402 protocol header requirements (PAYMENT-SIGNATURE, PAYMENT-REQUIRED, PAYMENT-RESPONSE) rather than generic CORS testing tools, making it ideal for developers building or integrating x402 payment servers.
Side effects
- Missing required 'input' object in request body returns validation error
- Unsupported HTTP method (e.g. POST, PUT) returns schema error since only GET, HEAD, DELETE are allowed
- Malformed expose_headers query param may produce incomplete lint results
- Server unreachable or timeout returns connection error
- Ambiguous or incomplete CORS configuration may yield inconclusive lint output
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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