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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 2026-10-11).
Validates JSON data against a JSON Schema (drafts 4 through 2020-12) and returns a valid/invalid flag plus detailed error paths and failing rules.
Price / call$0.003
Success—
StatusUnknown
How this service works
Validate JSON data against a JSON Schema (drafts 4 to 2020-12, with format checks): valid flag and every error with its exact path and failing rule. Check API responses or LLM structured output.
Output
Returns a JSON object containing the schema draft used, a boolean 'valid' flag, the total number of errors, and a 'detail' array where each entry has the failing rule name (e.g. 'required', 'type'), the exact JSON path to the offending field (e.g. '$.id'), and a human-readable error message.
Example use cases
Validating LLM structured output
“I just got this JSON back from the language model and I'm not sure it matches my required schema — can you validate it and list every field that's wrong or missing, with the exact path and rule that failed?”
Checking API response conformance
“Our payment service just returned this JSON payload — please validate it against our response schema and tell me if it's valid or flag every error with its path and the rule it broke.”
Debugging a malformed config file
“This config JSON is failing somewhere but I can't tell where — run it against the JSON Schema for our config format and give me a full list of all validation errors with the exact location in the document.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/json-schema-validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need precise, path-level validation feedback against a formal JSON Schema (any draft from 4 to 2020-12), especially for verifying LLM-generated structured output or API responses where knowing exactly which fields fail and why is critical. Prefer it over in-process validators when running in a serverless or sandboxed environment without library access, or when you need a neutral third-party validation step in an agentic pipeline.
Side effects
- Invalid or unparseable JSON data returns a parse error rather than schema errors
- Invalid JSON Schema document causes schema compilation failure
- Unsupported schema draft version may result in an error or partial validation
- Network timeout on large deeply-nested documents
- Missing 'data' or 'schema' fields in the request body return a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"draft": "Draft202012Validator",
"valid": false,
"detail": [
{
"rule": "required",
"route": "$",
"message": "'name' is a required property"
},
{
"rule": "type",
"route": "$.id",
"message": "'1' is not of type 'integer'"
}
],
"errors": 2
}
}Tags
x402
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