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Vextorium JSON Schema Validator
x402
Vextorium JSON Schema Validator is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-13).
Validates JSON data against a JSON Schema (drafts 4–2020-12) and returns a valid/invalid flag plus every error with its exact path and failing rule.
Price / call$0.003
Success—
StatusUnknown
How this service works
Validate JSON data against a JSON Schema (drafts 4 to 2020-12, with format checks): valid flag and every error with its exact path and failing rule. Check API responses or LLM structured output.
Output
Returns a JSON object with: the schema draft used (e.g. 'Draft202012Validator'), a boolean 'valido' flag indicating whether the data is valid, the total error count ('errores'), and a 'detalle' array where each element contains the error path ('ruta'), the failing rule name ('regla'), and a human-readable message ('mensaje').
Example use cases
Validate LLM structured output
“My LLM just returned this JSON object — can you validate it against this schema and tell me every field that's wrong, what rule it broke, and the exact path so I can debug it?”
Check API response against contract
“I got this response back from a third-party API and I need to confirm it matches our expected JSON Schema — validate it and list every violation with its path and rule.”
Catch schema errors before saving
“Before I store this user-submitted JSON in the database, validate it against this JSON Schema draft 2020-12 and give me all the errors with their exact locations so I can reject bad input.”
Technical details
Endpoint
POSThttps://api.vextorium.com/validar-esquema-json-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need precise, path-level JSON Schema validation across any supported draft (4 through 2020-12) with format checks enabled. Ideal for validating LLM-generated structured output, API response contracts, or user-submitted data before storage. Prefer this over generic JSON linting tools when you need the exact failing rule name and JSON Pointer path for each error, not just a pass/fail result.
Side effects
- Invalid or malformed JSON Schema provided — returns validation or parsing error
- datos or esquema fields missing from request body — returns 400-level error
- Schema draft version not supported — may return unsupported draft error
- Extremely large or deeply nested JSON may time out
- Format checks unavailable for custom formats not defined in the schema spec
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"draft": "Draft202012Validator",
"valido": false,
"detalle": [
{
"ruta": "$",
"regla": "required",
"mensaje": "'name' is a required property"
},
{
"ruta": "$.id",
"regla": "type",
"mensaje": "'1' is not of type 'integer'"
}
],
"errores": 2
}
}Tags
x402
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