Classifies sanitized x402 failure facts into safe diagnostic causes without repl
Classifies sanitized x402 failure facts into safe diagnostic causes without replaying payments or storing raw logs.
Answeringour last check, 2026-10-04
1 of 1checks answered this week
339 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-failure-fact-classifier
| 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 | $0.01 | 339 ms |
Example input (from the provider)
{
"body": {
"caller_context": {
"client_name": "example-agent",
"client_version": "1.0.0",
"environment": "test",
"integration_step": "challenge"
},
"expected_facts": {
"amount": "0.01",
"currency": "USDC",
"network": "base",
"receiver": "0x2211E12e6Bc8Da27B48B9DD66A55f5C3388D713a",
"resource_path": "/api/x402/wallet-snapshot",
"scheme": "exact",
"tool_id": "wallet_snapshot"
},
"failure_facts": {
"amount": "0.01",
"currency": "USDC",
"http_status": 402,
"network": "base",
"present_header_names": [
"payment-required",
"content-type"
],
"receiver": "0x2211E12e6Bc8Da27B48B9DD66A55f5C3388D713a",
"resource_path": "/api/x402/wallet-snapshot",
"scheme": "exact",
"x402_version": 2
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"caller_context": {
"additionalProperties": false,
"properties": {
"client_name": {
"pattern": "^[A-Za-z0-9_. -]{1,80}$",
"type": "string"
},
"client_version": {
"pattern": "^[A-Za-z0-9_.:-]{1,40}$",
"type": "string"
},
"environment": {
"enum": [
"local",
"preview",
"production",
"test",
"unknown"
],
"type": "string"
},
"integration_step": {
"enum": [
"challenge",
"sign",
"retry",
"verify",
"settle",
"target_response",
"unknown"
],
"type": "string"
}
},
"type": "object"
},
"expected_facts": {
"additionalProperties": false,
"properties": {
"amount": {
"maxLength": 32,
"type": "string"
},
"currency": {
"enum": [
"USDC"
],
"type": "string"
},
"network": {
"maxLength": 64,
"type": "string"
},
"receiver": {
"maxLength": 80,
"type": "string"
},
"resource_path": {
"maxLength": 160,
"type": "string"
},
"scheme": {
"maxLength": 64,
"type": "string"
},
"tool_id": {
"maxLength": 120,
"type": "string"
}
},
"type": "object"
},
"failure_facts": {
"additionalProperties": false,
"properties": {
"amount": {
"maxLength": 32,
"type": "string"
},
"currency": {
"enum": [
"USDC"
],
"type": "string"
},
"facilitator_error_code": {
"pattern": "^[A-Za-z0-9_.:-]{1,120}$",
"type": "string"
},
"http_status": {
"maximum": 599,
"minimum": 100,
"type": "integer"
},
"network": {
"maxLength": 64,
"type": "string"
},
"present_header_names": {
"items": {
"maxLength": 80,
"type": "string"
},
"maxItems": 40,
"type": "array"
},
"receiver": {
"maxLength": 80,
"type": "string"
},
"resource_path": {
"maxLength": 160,
"type": "string"
},
"retry_status": {
"maxLength": 64,
"type": "string"
},
"scheme": {
"maxLength": 64,
"type": "string"
},
"target_error_code": {
"pattern": "^[A-Za-z0-9_.:-]{1,120}$",
"type": "string"
},
"x402_version": {
"maximum": 2,
"minimum": 1,
"type": "integer"
}
},
"type": "object"
}
},
"required": [
"failure_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"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"confidence": {
"enum": [
"high",
"medium",
"low"
],
"type": "string"
},
"decision": {
"type": "string"
},
"endpoint": {
"enum": [
"x402-failure-fact-classifier"
]
},
"evidence": {
"items": {
"type": "object"
},
"type": "array"
},
"generated_at": {
"format": "date-time",
"type": "string"
},
"likely_cause": {
"type": "string"
},
"limitations": {
"items": {
"type": "string"
},
"type": "array"
},
"metadata": {
"additionalProperties": false,
"properties":