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AgentShelf JSON Schema Validator
x402
AgentShelf JSON Schema Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Validates a JSON value against a provided JSON Schema and returns whether it conforms, with no network or LLM calls involved.
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs a JSON value checked against a JSON Schema. No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/json-schema-check first.
Output
Returns a conformance result indicating whether the provided JSON data value is valid against the given JSON Schema, along with any validation errors or constraint violations if the data does not conform.
Example use cases
Validate API response before processing
“Before I store this API response, check if it matches the expected schema — the data is {"id": 42, "status": "active"} and the schema requires an integer id and a status string.”
Config file conformance check
“I have a config object {"timeout": 30, "retries": 3} — can you verify it matches this schema: {"type": "object", "properties": {"timeout": {"type": "number"}, "retries": {"type": "integer"}}, "required": ["timeout"]}?”
User input format validation
“A user submitted this form data: {"email": "user@example.com", "age": "25"} — check if it conforms to a schema that requires email as a string and age as an integer, and tell me what's wrong if it fails.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/json-schema-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, deterministic, offline JSON Schema validation with no LLM involvement and no external network calls. It is ideal for agents that need to validate structured data conformance within a pipeline at low cost ($0.001 USDC). Prefer the free sandbox endpoint POST /v1/sandbox/json-schema-check first if available; use this paid endpoint when the sandbox is unavailable or rate-limited.
Side effects
- Malformed JSON data causes a parse error response
- Invalid or malformed JSON Schema object results in a schema parse error
- Missing required fields (data or schema) returns a 400 bad request
- Network or service unavailability returns a 5xx error
- Unsupported JSON Schema draft or keywords may result in partial or failed validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value to validate. |
| schema | object | JSON Schema object. Example: {type:object, required:[name]}. |
Tags
x402
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