Classifies x402 payment identifier and retry facts for duplicate-charge and priv
Classifies x402 payment identifier and retry facts for duplicate-charge and privacy risk.
Answeringour last check, 2026-10-04
1 of 1checks answered this week
366 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.blockchainmoneymap.com/api/x402/x402-payment-identifier-retry-safety-lens
| Category | Everything else |
|---|---|
| Provider host | api.blockchainmoneymap.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-04 | valid payment request | 402 | $0.01 | 366 ms |
Example input (from the provider)
{
"body": {
"facts": {
"cached_response_present": true,
"crash_recovery_policy": "resume with same payment id after crash",
"dedupe_scope": "buyer route resource",
"identifier_privacy_notes": "opaque random prefix with no identity detail",
"payment_id_format": "payment-idempotency-key per route and buyer session",
"retry_cache_policy": "cache response by payment id for safe retries",
"unique_prefix_present": true
},
"mode": "audit"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"facts": {
"additionalProperties": false,
"properties": {
"cached_response_present": {
"type": "boolean"
},
"crash_recovery_policy": {
"maxLength": 500,
"type": "string"
},
"dedupe_scope": {
"maxLength": 500,
"type": "string"
},
"identifier_privacy_notes": {
"maxLength": 500,
"type": "string"
},
"payment_id_format": {
"maxLength": 500,
"type": "string"
},
"retry_cache_policy": {
"maxLength": 500,
"type": "string"
},
"unique_prefix_present": {
"type": "boolean"
}
},
"required": [
"payment_id_format",
"retry_cache_policy",
"dedupe_scope",
"crash_recovery_policy"
],
"type": "object"
},
"mode": {
"enum": [
"audit"
]
},
"policy": {
"additionalProperties": true,
"type": "object"
},
"reference_facts": {
"additionalProperties": false,
"properties": {
"cached_response_present": {
"type": "boolean"
},
"crash_recovery_policy": {
"maxLength": 500,
"type": "string"
},
"dedupe_scope": {
"maxLength": 500,
"type": "string"
},
"identifier_privacy_notes": {
"maxLength": 500,
"type": "string"
},
"payment_id_format": {
"maxLength": 500,
"type": "string"
},
"retry_cache_policy": {
"maxLength": 500,
"type": "string"
},
"unique_prefix_present": {
"type": "boolean"
}
},
"required": [
"payment_id_format",
"retry_cache_policy",
"dedupe_scope",
"crash_recovery_policy"
],
"type": "object"
}
},
"required": [
"mode",
"facts"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}