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HALOWERK x402werk Receipt & Offer Verifier
x402
HALOWERK x402werk Receipt & Offer Verifier is a paid API for AI agents from x402.netzhandwerker.de, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-30).
Verifies the cryptographic validity of an x402 payment offer and optional receipt, checking signatures, payer identity, and receipt freshness on Base Mainnet.
Price / call$0.003
Success—
StatusUnknown
How this service works
HALOWERK x402werk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
Returns a verification result indicating whether the offer signature is cryptographically valid, whether the payer matches the expected address, and whether the receipt (if provided) is within the acceptable age window and correctly signed.
Example use cases
Gate paid API access with offer check
“Before I release the premium data to this client, verify their x402 EIP-712 signed offer — here's the offer object with payload and signature — and confirm the payer address is 0x1234...abcd.”
Confirm receipt freshness after payment
“A user just submitted a payment receipt for my x402 endpoint. Can you verify the receipt signature using eip712 format and check that it's no older than 1800 seconds, with payer 0xABCD...5678?”
Validate JWS-signed offer with public key
“I have a JWS-signed x402 offer from a client whose key isn't resolvable from the token itself — please verify the offer signature using this JWK public key and tell me if it's valid.”
Technical details
Endpoint
POSThttps://x402.netzhandwerker.de/receipt/verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to cryptographically verify x402 payment offers and receipts before granting access to paid resources, especially on Base Mainnet with USDC. Prefer this over manual on-chain checks when you need fast, off-chain signature and receipt validation supporting EIP-712, EIP-191, and JWS formats.
Side effects
- Invalid or mismatched signature returns a verification failure
- Payer address mismatch when expected_payer is provided
- Receipt older than max_receipt_age_seconds returns implausible timestamp error
- Malformed offer or receipt object causes a schema validation error
- JWS signature with unresolvable key ID without a supplied public_key fails
- Unsupported signature format or network mismatch
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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