Validate a JSON document against a schema you supply and get the exact pointer a
Validate a JSON document against a schema you supply and get the exact pointer and clause of every failure. Reports what it could not check as well as what failed, so a valid verdict always means every declared constraint was actually evaluated. Patterns run on a non-backtracking engine, and no reference is ever fetched.
Answeringour last check, 2026-10-04
1 of 1checks answered this week
4222 msmedian answer time
$0.08listed price per call
$0.08price 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.zfinia.com/x402/v1/json-contract-audit
| Category | Code and developer |
|---|---|
| Provider host | api.zfinia.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 | $0.08 | 4222 ms |
Example input (from the provider)
{
"body": {
"document": {
"currency": "GBP",
"order_id": "A1",
"placed_at": "2026-09-31",
"quantity": 0
},
"schema": {
"additionalProperties": false,
"properties": {
"currency": {
"enum": [
"USD",
"EUR"
],
"type": "string"
},
"order_id": {
"pattern": "^[A-Z]{3}-\\d{4}$",
"type": "string"
},
"placed_at": {
"format": "date",
"type": "string"
},
"quantity": {
"minimum": 1,
"type": "integer"
}
},
"required": [
"order_id",
"quantity",
"currency"
],
"type": "object"
}
},
"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": {
"document": {},
"schema": {
"type": "object"
}
},
"required": [
"document",
"schema"
],
"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": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}