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x402 Market API – test-echo-cdp-2
x402
x402 Market API – test-echo-cdp-2 is a paid API for AI agents from x402-market-api.lien-studio-akiyama.workers.dev, paid per call via x402, $0.010000/call, status unknown (last checked 2026-09-14).
Echoes back a posted HTTP request body (CDP mode, second listing) for testing x402 payment and Bazaar indexer discovery.
Price / call$0.010000
Success—
StatusUnknown
How this service works
Second cdp-mode listing identical to test-echo-cdp, used to A/B test whether the Bazaar indexer picks up newly-created resources differently from one that has been live for several days.
Output
The endpoint echoes back whatever request body (JSON, form-data, or text) was sent in the POST, serving as confirmation that the x402 payment was accepted and the request was received correctly.
Example use cases
A/B test Bazaar indexer discovery
“I want to compare how the Bazaar indexer picks up this newer x402 listing versus the older one that's been live for days — send a test payload through this second CDP echo endpoint and tell me if it shows up in Bazaar faster than the original listing.”
Verify CDP micropayment wire format
“After the v2-spec PaymentPayload fix, I need to confirm the updated wire format still works correctly — fire a $0.01 USDC CDP payment at this echo endpoint with a sample JSON body and make sure it gets echoed back cleanly.”
Confirm new x402 resource discoverability
“I just created a new x402 resource and want to check that the Bazaar indexer can discover it properly — post a simple test body through this endpoint and confirm the payment clears and the response comes back as expected.”
Technical details
Endpoint
POSThttps://x402-market-api.lien-studio-akiyama.workers.dev/api/seller-4068b8fc/test-echo-cdp-2When to prefer
Choose this endpoint when you need to test the x402 CDP payment flow against a second listing (created after the v2-spec PaymentPayload fix) to A/B compare Bazaar indexer discovery behavior versus an older live listing; not intended for production data processing.
Side effects
- Payment not included or invalid x402 header returns 402 Payment Required
- Invalid bodyType enum value returns validation error
- Missing required 'input' object returns schema validation error
- Body does not match declared bodyType causes parse error
- Cloudflare Worker cold start or timeout returns 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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