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x402-quickstart Agent Market Probe (loop2)
x402
x402-quickstart Agent Market Probe (loop2) is a paid API for AI agents from loop2-quickstart.manhliemcn4euwlu.workers.dev, paid per call via x402, $0.001/call, status down (last checked 2026-10-14).
Returns a probe/health-check bundle for x402-compliant agent market endpoints, reporting reachability, HTTP conformance, payment routing, and pricing for v2 Base USDC seller endpoints.
Price / call$0.001
Success—
StatusDown
How this service works
Complete x402 quickstart bundle: v2 Base USDC seller endpoint + EIP-3009 buyer client + deterministic product bundle + tests.
Output
Returns a binary/JSON probe bundle containing per-check results for: URL reachability, HTTP status, x402 402-response presence, protocol conformance, pay-to address, atomic payment amount, and aggregate stats across all probes.
Example use cases
Pre-integration x402 conformance check
“Before I wire up my buyer client, can you probe this x402 agent market endpoint and confirm it returns a valid 402, has a proper pay-to address on Base, and the atomic USDC amount looks right? Give me the full conformance report in JSON.”
Diagnosing a broken micropayment seller
“My x402 seller endpoint doesn't seem to be responding correctly to buyer requests — can you run a probe against the agent market URL and tell me which checks are failing: reachability, HTTP conformance, the 402 response, or the payment routing?”
Auditing a new x402 quickstart deployment
“I just deployed the x402 quickstart bundle on Cloudflare Workers and want to verify everything is set up right — can you check if the /mkt/agents endpoint is reachable, x402-conformant, and returning the correct EIP-3009 payment details in JSON format?”
Technical details
Endpoint
GEThttps://loop2-quickstart.manhliemcn4euwlu.workers.dev/mkt/agents?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, structured conformance audit of an x402 v2 seller on Base USDC — especially when you want a single call that returns reachability, 402-response validity, pay-to address, and atomic pricing in one bundle. Prefer it over generic HTTP health checks when the target is specifically an x402-gated micropayment API and you need EIP-3009-aware validation.
Side effects
- Endpoint unreachable — worker may be down or cold-starting, probe returns reachable=false
- Non-conformant 402 response — seller misconfigured, x402_402 probe fails
- Missing or malformed pay-to address — EIP-3009 fields absent in 402 header
- Format query param missing — request rejected as invalid input
- Payment not processed — probe is read-only and does not settle payments, financial data may be stale
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "binary",
"example": "{probes:[url,reachable,http,x402_402,conformant,pay_to,amount_atomic], stats}"
}Tags
x402
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