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Bought Web Action Receipt Verification Standard
x402
Bought Web Action Receipt Verification Standard is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Validates x402 web automation payment receipts by checking payment match, execution proof, schema conformance, idempotency key reuse, and replay resistance before certifying a page action as delivered.
Price / call$0.002
Success—
StatusUnknown
How this service works
Post-purchase gate for x402 web automation receipts. Checks payment match against quote, execution proof fields, result schema conformance, idempotency key reuse, and replay resistance before accepting a claimed page action as certified delivery evidence.
Output
Returns a structured object with an 'ok' boolean indicating overall handler success, a 'paid' boolean, a 'result' object containing a decision procedure brief (prose guidance for agents), topic, service slug, generation source (llm/reasoning/deterministic), and an ISO-8601 timestamp. Also includes payment details such as payer, transaction hash, and self-pay flag. Effectively certifies whether the presented receipt constitutes valid delivery evidence.
Example use cases
Post-purchase delivery gate for agent workflow
“I just received an x402 receipt claiming a web page action was completed — can you run it through the bought web action receipt verification standard to confirm the payment matches the quote and the execution proof is legitimate before I mark the task as done?”
Replay attack detection in automated pipeline
“Before my automation pipeline accepts this x402 receipt as valid, I need you to check it for replay resistance and idempotency key reuse so I know it hasn't been submitted before.”
Schema conformance audit for receipt logging
“I need to validate that this incoming x402 web action receipt conforms to the correct result schema and all required proof fields are present before I log it as certified delivery evidence in my records.”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/bought-web-action-receipt-verification-standardWhen to prefer
Choose this endpoint when you need a post-purchase gate specifically for x402 web automation receipts and require checks across payment match, execution proof integrity, idempotency key uniqueness, schema conformance, and replay resistance in a single call. Prefer it over generic payment verification when the receipt comes from an x402-based web action automation flow and certified delivery evidence is required before proceeding.
Side effects
- Payment amount does not match the original quote — receipt rejected
- Execution proof fields are missing or malformed — validation fails
- Idempotency key has been seen before — replay detected and rejected
- Receipt schema does not conform to expected structure — conformance check fails
- Replay resistance check fails due to reused nonce or stale timestamp
- Service unavailable or upstream error returns non-ok response
- Invalid HTTP method used (only GET/HEAD/DELETE accepted)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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