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Orcpin x402 Door Audit
x402
Orcpin x402 Door Audit is a paid API for AI agents from orcpin.dev, paid per call via x402, $50/call, status unknown (last checked 2026-10-01).
Performs a signed four-part audit of an x402 endpoint by actually purchasing from it, covering quote verification, real purchase behavior, on-chain settlement tracking, and cost benchmarking.
Price / call$50
Success—
StatusUnknown
How this service works
Signed four-part audit of one x402 endpoint, by buying from it: the quote (what the 402 asks, and whether the seller's manifest and public catalog agree), real purchases with Orcpin's audit wallet (quoted vs signed vs settled vs chain vs delivered; replay and bad-payment behaviour), the door's inbound books from the chain (settlements, revenue, distinct and repeat payers), and unit cost against priced doors listed. Ed25519-signed and logged; facts, no verdict. No purchase settled, no charge.
Output
A signed, four-part audit report covering: (1) quote analysis — what the 402 challenge asks and whether it matches the seller's manifest and public catalog; (2) purchase behavior — comparing quoted vs signed vs settled vs chain-confirmed vs delivered responses, plus replay and bad-payment handling; (3) inbound on-chain books — settlement records, total revenue, and distinct/repeat payer counts; (4) cost benchmarking against other priced x402 doors. The report is Ed25519-signed and logged, presenting only facts with no verdict. No net charges to the caller beyond the audit fee if no purchase settles.
Example use cases
Pre-integration trust check for x402 API
“Before I build my agent on top of that x402 weather API at https://weather.example.com/forecast, run a door audit with 2 purchases so I can see if the quote matches their manifest, payments actually settle on-chain, and their price is competitive.”
Verifying replay attack resistance
“I want to know if the x402 door at https://data.example.com/records handles replay attacks and bad payments correctly — run a 5-purchase Orcpin audit using POST with body {"query":"test"} and give me the signed results.”
On-chain revenue and payer analysis
“Can you audit the x402 endpoint at https://api.example.com/signals with 3 purchases and pull the on-chain settlement records, including how many distinct payers have used it and what revenue it's collected?”
Technical details
Endpoint
POSThttps://orcpin.dev/v1/door-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, cryptographically signed audit of an x402 endpoint before integrating it into an agent workflow, when you want to verify on-chain settlement behavior and replay resistance, or when you need to benchmark cost against comparable paywalled APIs. Prefer this over a simple reliability pre-flight (Orcpin's probe endpoint) when you need full purchase lifecycle verification and on-chain accounting, not just uptime and latency stats.
Side effects
- Target URL does not respond with a valid 402 challenge — audit cannot proceed
- Purchase budget exceeded by requested number of purchases
- Target endpoint is unreachable or returns non-HTTP-402 errors
- On-chain settlement data unavailable for the target door
- Manifest or catalog lookup fails for the target x402 seller
- Invalid method/body combination causing all test purchases to fail
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | The x402 endpoint to audit — a public http(s) URL that answers an unpaid request with a 402 challenge. |
| body | object | JSON body to send to a POST door (the request an agent would actually make). Implies method POST. |
| method | string | The door's verb. Default: GET, retried as POST if GET looks like the wrong verb. |
| purchases | integer | Real purchases to make, 1–5. Default 3. Their total must fit the audit's purchase budget. |
Tags
x402
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