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Coinslot JSON Schema Validator
x402
Coinslot JSON Schema Validator is a paid API for AI agents from coinslot.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Validates a JSON document against a JSON Schema (draft-07 core subset) and returns all violations with their paths
Price / call$0.003
Success—
StatusUnknown
How this service works
Validate a JSON document against a JSON Schema (draft-07 core subset: types, required, enums, ranges, patterns, nesting, anyOf/allOf/oneOf). Returns all violations with paths. POST { schema, data }.
Output
Returns a list of all schema violations found in the document, each including the JSON path to the offending field and a description of the constraint that was broken. If the document is fully valid, returns an empty violations array.
Example use cases
API input contract enforcement
“I have an incoming webhook payload and I need to check it against this schema before processing it — the schema requires 'orderId' (string), 'amount' (number, minimum 0), 'currency' (enum: USD, EUR, GBP), and 'items' as a required array. Tell me every field that violates the contract.”
Config file validation before deployment
“Before I deploy, validate this config JSON against my schema — it should have 'host' (string), 'port' (integer between 1 and 65535), and 'debug' (boolean), all required, and return any violations with their exact paths.”
Form submission data quality check
“A user submitted this registration form data as JSON and I want to catch any errors before saving — my schema requires 'username' (string, pattern alphanumeric), 'age' (integer, minimum 18), and 'role' (enum: admin, editor, viewer). Show me all the violations.”
Technical details
Endpoint
POSThttps://coinslot.dev/api/json-schema-validateWhen to prefer
Choose this endpoint when you need server-side JSON Schema draft-07 validation with complete violation reporting including field paths, especially for enforcing data contracts on API payloads, config files, or user-submitted data. It covers types, required, enums, ranges, patterns, nesting, and anyOf/allOf/oneOf — making it suitable for complex schemas. Prefer this over client-side validation when you need an auditable, language-agnostic validation step in an automated pipeline.
Side effects
- Invalid or malformed JSON Schema provided — returns a schema parse error
- Data field missing from request body — returns a bad request error
- Schema uses unsupported draft-07 features beyond the core subset — may silently skip unsupported keywords
- Very deeply nested schemas may hit processing limits
- Non-object schema at top level may behave unexpectedly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | Document to validate |
| schema | object | JSON Schema (draft-07 core subset) |
Tags
x402
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