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agenteconomy.cloud x402 Endpoint Verifier
x402
agenteconomy.cloud x402 Endpoint Verifier is a paid API for AI agents from mcp.agenteconomy.cloud, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Performs a full end-to-end paid test of an x402-payment endpoint, verifying quote, 402 requirements, payment settlement, and content delivery, then returns a signed verdict of what passed or failed.
Price / call$0.25
Success—
StatusUnknown
How this service works
Does this x402 seller actually deliver when paid? We test the full flow as a real buyer: quote, 402 requirements validation, a real capped probe purchase, settlement and delivery — not a lint that stops before money moves. The signed verdict states exactly which steps ran and what failed: 402-again loops, wrong payTo, malformed accepts, phantom endpoints. agenteconomy.cloud (mcp-pricing-v1.1)
Output
A signed verdict document indicating which steps of the x402 payment flow ran successfully (quote, 402 requirements validation, probe payment, settlement, delivery) and a named list of any failures such as 402-again loops, wrong payTo address, malformed accept headers, or phantom/unreachable endpoints.
Example use cases
Pre-integration safety check for x402 endpoint
“I'm about to integrate https://api.dataprovider.com/premium-feed into my agent — can you run a real paid test against it and confirm it settles correctly, delivers content, and the payTo is 0xDEF456? I want to see the full verdict before I commit.”
Catching a broken x402 listing on the marketplace
“I found this x402 listing on the catalog with listing ID mkt-7891 — can you probe it with a real purchase and tell me if the advertised payTo address actually matches what the endpoint charges, and whether it loops on 402 or properly delivers?”
Debugging a suspected phantom endpoint in an agent workflow
“My agent keeps failing when trying to pay https://api.suspectservice.io/resource — can you do a live x402 test on it and tell me exactly which step breaks: the quote, the 402 requirements, the payment settlement, or the delivery?”
Technical details
Endpoint
POSThttps://mcp.agenteconomy.cloud/api/v1/checkWhen to prefer
Use this endpoint when you need to validate that a real x402 payment endpoint works end-to-end before integrating it into an agent workflow, or when auditing a marketplace listing for correctness. Unlike static linting tools that stop before money moves, this service executes a real capped probe purchase and reports on every stage of the payment and delivery cycle. Prefer it when payTo address verification, settlement confirmation, or delivery proof is required, especially when a listing's behavior is suspected to deviate from its advertised spec.
Side effects
- Target endpoint is unreachable or returns non-402 errors — verdict reports phantom endpoint finding
- x402 endpoint loops on 402 responses without settling — named as 402-again loop finding
- payTo address in response does not match expected_payto — reported as payTo mismatch finding
- Malformed accept headers on the endpoint prevent payment negotiation — reported as malformed accepts finding
- Listing ID not found in catalog — listing comparison step skipped or error returned
- Probe payment cap exceeded or USDC balance insufficient to complete the test purchase
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| endpoint | string | https:// resource URL whose x402 payment machinery to test |
| listing_id | string | optional catalog listing id — compares the advertised payTo against the cataloged seller |
| expected_payto | string | optional 0x… address you expect the endpoint to charge to; mismatch is a named finding |
Tags
x402
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