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Busker JSON Schema Validator
x402
Busker JSON Schema Validator is a paid API for AI agents from workbot1.oddsys.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).
Validates one or up to 100 JSON instances against a JSON Schema (draft-07, 2019-09, 2020-12) returning all violations with path, keyword, and message
Price / call$0.002
Success—
StatusUnknown
How this service works
Validate JSON against a JSON Schema (draft-07, 2019-09, 2020-12, with string formats): every violation with path, keyword and message. One instance, a JSON string, or up to 100 instances against one schema.
Output
A list of all schema violations found, each containing the JSON path to the offending value, the schema keyword that was violated (e.g. 'type', 'required', 'format'), and a human-readable message explaining the violation. Returns an empty violations list if the instance is fully valid. For batch calls, violations are grouped or indexed per instance.
Example use cases
API response contract check
“I have an API response I need to verify against our OpenAPI component schema — can you validate this JSON against the schema and tell me every field that violates it, including the JSON path and which keyword failed?”
Batch data quality sweep
“I have 80 records from our data pipeline as JSON and one shared schema — validate all of them at once and give me every violation so I can figure out which records are malformed before we load them into the database.”
User-submitted form validation
“A user just submitted this form payload as JSON and I need to check it against our draft-07 JSON Schema, including string format rules like email and date — list all the violations with paths so I can return meaningful error messages.”
Technical details
Endpoint
POSThttps://workbot1.oddsys.org/validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need detailed, per-violation structured feedback (path + keyword + message) for JSON Schema validation across draft-07, 2019-09, or 2020-12, especially when you need string format validation or batch validation of up to 100 instances in a single call. Prefer it over client-side validators when running in an agent environment without a local runtime, or when you need normalized, machine-readable violation objects rather than a simple pass/fail.
Side effects
- Remote $ref in schema is rejected — the schema must be self-contained
- More than 100 instances in the items array returns an error
- Malformed JSON in dataText field is reported as a parse-error violation rather than a hard failure
- Invalid or unrecognized $schema draft URI may fall back to draft-07 or return an error
- Passing both data and items simultaneously may cause ambiguous behavior
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | The instance to validate (any JSON value). |
| items | array | Validate many instances against the one schema. |
| schema | object | JSON Schema (draft-07 default; $schema may select 2019-09 or 2020-12). Remote $ref is rejected. |
| dataText | string | The instance as a JSON string (parsed first; parse errors are reported as a violation). |
Tags
x402
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