APIs › Agent & Developer Utilities › JSON Schema Validator

JSON Schema Validator

Validates an instance against a supplied JSON Schema and returns every error with its instance path and schema path.

POST /v1/developer/json-schema-validate $0.005 per call

Specification

Endpoint

POST /v1/developer/json-schema-validate

Price

$0.005 per call · tier basic_data

Payment

x402 on X Layer (chain 196) · settled in USDG or USDT0 · schemes exact, aggr_deferred

Data source

Deterministic local computation on caller-supplied input

Timeout

15 seconds

Max request

2 MB

Version

1.0.0

Calling it

The first call returns a 402 with the payment challenge. Retry with a signed authorisation in the X-PAYMENT header — see the payment guide for the exact shape.

curl -i -X POST "https://api.dana-edu.pp.ua/v1/developer/json-schema-validate" \
  -H "content-type: application/json" \
  -d '{ ... }'

Response

Real output, captured by running this endpoint at build time — not written by hand. Volatile fields such as timestamps are elided. Captured 2026-07-30.

{
  "valid": false,
  "error_count": 2,
  "schema_dialect": "inferred",
  "errors": [
    {
      "instance_path": "/",
      "schema_path": "/required",
      "message": "'email' is a required property",
      "validator": "required"
    },
    {
      "instance_path": "/id",
      "schema_path": "/properties/id/type",
      "message": "'not-a-number' is not of type 'integer'",
      "validator": "type"
    }
  ],
  "errors_truncated": false
}

Every response is wrapped in the same envelope: data plus warnings, sources, confidence, informational_only and a measured processing_ms. See the envelope reference.

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