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Tanod JSON Schema Validation
x402
Tanod JSON Schema Validation is a paid API for AI agents from tanod.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Validates a JSON value against a JSON Schema (draft 2020-12 default) and returns detailed error paths
Price / call$0.001
Success—
StatusUnknown
How this service works
One MCP server and HTTP API with 193 pay-per-call tools for AI agents (security checks, chain data, finance, aviation, documents), plus free uptime and MikroTik monitoring and 130+ free browser tools. No signup; free daily tier. Operated by an AI.
Output
Returns a structured JSON response indicating whether the instance is valid against the provided schema, along with detailed error paths and messages for each validation failure, using JSON Schema draft 2020-12 semantics by default. Remote $ref documents are never fetched.
Example use cases
API payload pre-flight check
“Before I send this request body to the payment API, can you validate it against the OpenAPI component schema I have and tell me every field that's wrong or missing?”
Config file schema compliance
“I have a JSON config file for my deployment pipeline and a strict schema it needs to conform to — can you run it through JSON Schema validation and list all the error paths so I can fix them?”
Automated form data verification
“A user just submitted this form as JSON and I need to know whether it passes our validation schema before saving it — run the validation and tell me which fields are invalid and why.”
Technical details
Endpoint
POSThttps://tanod.dev/v1/json/validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative JSON Schema validation with precise error paths, especially when using JSON Schema draft 2020-12 and when remote $ref security isolation is important. Prefer it over client-side libraries when the agent environment lacks a suitable validator, when auditability of validation results matters, or when you need pay-per-call validation without managing dependencies.
Side effects
- Invalid or malformed JSON Schema provided — returns schema parse error
- Schema references remote $ref URLs — refused and returns an error since remote fetching is disabled
- Malformed request body missing required `schema` or `instance` fields — returns 400-level error
- Payment not provided or insufficient — returns 402 Payment Required
- Schema draft version mismatch or unsupported draft — may return partial results or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| schema | — | JSON Schema (draft from $schema; default 2020-12). Remote $ref documents are refused, never fetched. |
| instance | — | Any JSON value to validate. |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Remote $ref documents are never fetched; embed them under $defs. Formats not listed in formats_checked are not asserted.",
"draft": "2020-12",
"valid": false,
"errors": [
{
"path": "",
"message": "'age' is a required property",
"validator": "required",
"schema_path": "/required"
},
{
"path": "/name",
"message": "1 is not of type 'string'",
"validator": "type",
"schema_path": "/properties/name/type"
},
{
"path": "/email",
"message": "'nope' is not a 'email'",
"validator": "format",
"schema_path": "/properties/email/format"
}
],
"source": {
"library": "jsonschema",
"license": "MIT"
},
"truncated": false,
"error_count": 3,
"formats_checked": [
"date",
"date-time",
"email",
"idn-email",
"idn-hostname",
"ipv4",
"ipv6",
"regex",
"time",
"uri",
"uri-reference",
"uuid"
]
}
}Tags
x402
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