Inspect one supplied x402-v2 exact-payment challenge against an explicit expecte
Inspect one supplied x402-v2 exact-payment challenge against an explicit expected HTTPS resource, EVM CAIP-2 network, asset, payee and maximum price. Checks both URL declarations, structure and payment-policy fields only; no live probe, payment, facilitator verification or server-authenticity claim.
Answeringour last check, 2026-10-11
1 of 1checks answered this week
727 msmedian answer time
$0.0035listed price per call
$0.0035price 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://www.mahastrategies.com/api/v1/micro/x402-challenge-sanity
| Category | Market data |
|---|---|
| Provider host | www.mahastrategies.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-11 | valid payment request | 402 | $0.0035 | 727 ms |
Example input (from the provider)
{
"body": {
"challenge": {
"amountBaseUnits": "10000",
"asset": "0x1111111111111111111111111111111111111111",
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payee": "0x1111111111111111111111111111111111111111",
"resourceUrl": "https://example.org/result",
"scheme": "exact",
"version": 2
},
"dataClass": "synthetic",
"expected": {
"asset": "0x1111111111111111111111111111111111111111",
"maxAmountBaseUnits": "10000",
"network": "eip155:8453",
"payee": "0x1111111111111111111111111111111111111111",
"resourceUrl": "https://example.org/result"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"challenge": {
"type": "object"
},
"dataClass": {
"enum": [
"public",
"synthetic"
],
"type": "string"
},
"expected": {
"type": "object"
}
},
"required": [
"dataClass",
"expected",
"challenge"
],
"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": {
"amountBaseUnits": {
"enum": [
"3500"
],
"type": "string"
},
"boundaries": {
"maxItems": 128,
"minItems": 0,
"type": "array"
},
"inputDigest": {
"maxLength": 71,
"type": "string"
},
"offerId": {
"enum": [
"x402-challenge-sanity"
],
"type": "string"
},
"receiptDigest": {
"maxLength": 71,
"type": "string"
},
"result": {
"type": "object"
},
"version": {
"enum": [
"maha-microproducts/0.1"
],
"type": "string"
}
},
"required": [
"version",
"offerId",
"amountBaseUnits",
"inputDigest",
"result",
"boundaries",
"receiptDigest"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}