GET
/v1/x402/receipt$0.002x402 payment receipt: decode the payment you sent
Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a readable receipt: x402 version, scheme, CAIP-2 network and chain name, resource URL, the copied payment requirements, payer, recipient, value in atomic units and USD, USDC contract, nonce, validity window in ISO-8601 with seconds to expiry, signature length and prefix, extension keys, and pass/fail diagnostics. Computed locally, no upstream source.
Params: echo optional
Sample response
{
"query": {
"echo": "test-run-001"
},
"result": {
"payment_header_present": true,
"header_used": "payment-signature",
"header_bytes": 7308,
"decoded": true,
"encoding": "base64",
"error": null,
"payment": {
"x402_version": 2,
"scheme": "exact",
"network": "eip155:8453",
"network_caip2": "eip155:8453",
"network_name": "Base",
"resource": {
"url": "https://api.kit-rx.com/v1/x402/receipt",
"description": "Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a readable receipt: x402 version, scheme, CAIP-2 network and chain name, resource URL, the copied payment requirements, payer, recipient, value in atomic units and USD, USDC contract, nonce, validity window in ISO-8601 with seconds to expiry, signature length and prefix, extension keys, and pass/fail diagnostics. Computed locally, no upstream source.",
"mimeType": "application/json"
},
"accepted": {
"scheme": "exact",
"network": "eip155:8453",
"amount": "2000",
"amount_usd": "0.002",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xAf8E0A8a8A0A8f65831b2dD0FFe0c1B804698D70",
"maxTimeoutSeconds": 300,
"extra": {
"name": "USD Coin",
"version": "2"
}
},
"transfer_method": "eip3009",
"payer": "0x3f1D5e8a1B2c7b0E9F4d6A8c2E5b7D9f1A3c5E7b",
"to": "0xAf8E0A8a8A0A8f65831b2dD0FFe0c1B804698D70",
"value_atomic": "2000",
"value_usd": "0.002",
"value_usd_basis": "known Base USDC contract, 6 decimals",
"asset": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"symbol": "USDC",
"decimals": 6
},
"nonce": "0x9b7e2c4d61a0f3e85d2b47c91e06fa3b8c5d17e29f40b6a3c8e1d5f7a2b4c6e8",
"valid_after": {
"field": "authorization.validAfter",
"unix": 0,
"iso": "1970-01-01T00:00:00.000Z"
},
"valid_before": {
"field": "authorization.validBefore",
"unix": 1794603900,
"iso": "2026-11-13T21:05:00.000Z",
"seconds_until_expiry": 296,
"expired": false
},
"signature": {
"length_chars": 132,
"bytes": 65,
"prefix": "0x5c1f3a9e",
"kind": "ecdsa_65_bytes"
},
"extension_keys": [
"bazaar"
],
"top_level_keys": [
"x402Version",
"payload",
"extensions",
"resource",
"accepted"
],
"payload_keys": [
"authorization",
"signature"
]
},
"diagnostics": [
{
"id": "to_matches_payTo",
"check": "authorization.to equals accepted.payTo",
"status": "pass",
"detail": "Both are 0xAf8E0A8a8A0A8f65831b2dD0FFe0c1B804698D70."
},
{
"id": "value_matches_amount",
"check": "Signed value equals accepted.amount",
"status": "pass",
"detail": "Both are 2000 atomic units."
},
{
"id": "valid_before_future",
"check": "validBefore is in the future",
"status": "pass",
"detail": "Expires in 296 s."
},
{
"id": "valid_after_reached",
"check": "validAfter is not in the future",
"status": "pass",
"detail": "The authorization window has opened."
},
{
"id": "network_recognized",
"check": "Network is a recognized x402 USDC network",
"status": "pass",
"detail": "eip155:8453 is Base."
}
],
"diagnostics_summary": {
"pass": 5,
"fail": 0,
"skipped": 0
},
"server_time": "2026-11-13T21:00:04.512Z",
"echo": "test-run-001",
"settlement_note": "On-chain settlement happens after this body is produced: the facilitator submits the signed transfer once the handler returns 200. The transaction hash arrives in this same response's PAYMENT-RESPONSE header (base64 JSON with success, transaction, network and payer)."
},
"sources": [],
"attribution": [
"No third-party data: computed from this request's own payment header. Network names and USDC contract addresses follow the default asset table of the x402 reference implementation (@x402/evm, Apache-2.0)."
],
"generated_at": "2026-11-13T21:00:04.513Z"
}https://trust.kit-rx.com/v1/x402/receipt?echo=test-run-001