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Saylor Innovations JSON Validator
x402
Saylor Innovations JSON Validator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).
Validates whether a string is valid JSON and returns structural metadata including type, size, depth, key count, and error location
Price / call$0.01
Success—
StatusUnknown
How this service works
JSON validator - checks whether text is valid JSON, with type, size, depth, key count and error line and column
Output
Returns a JSON object with: a boolean 'valid' field indicating whether the input is valid JSON; 'type' describing the JSON value type (object, array, string, etc.); 'bytes' for size; 'max_depth' for nesting depth; 'total_keys' for key count; 'top_level_items' for array/object size at root; and on failure, 'error' message plus 'line' and 'column' pinpointing where parsing failed. Also includes 'checked_at' UTC timestamp.
Example use cases
Debug malformed API response
“This JSON response from an API is failing to parse in my app — can you check if it's valid JSON and tell me exactly which line and column has the error: '{"users":[{"id":1,"name":"Bob"},{"id":2,"name":}'”
Pre-flight check before data ingestion
“Before I store this config file, can you validate it's proper JSON and also tell me how deeply nested it is and how many total keys it has?”
Automated pipeline JSON gate
“I have this string coming out of a text processing step — validate whether it's valid JSON, and if not, give me the error message and location so I can flag the record for review.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/json/validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to validate JSON syntax and simultaneously get structural metadata (depth, key count, size, error location) in a single call. It is ideal for developer tools, data pipelines, or agent workflows that need to gate on JSON correctness before further processing. Prefer it over client-side parsing when you need a neutral third-party validation with rich diagnostic output including exact error line and column.
Side effects
- Input JSON text exceeds 100,000 character limit — request rejected
- Missing required 'json' query parameter — validation cannot proceed
- Network or server error returns non-200 response
- Payment of $0.01 USDC not fulfilled via x402 protocol — 402 response returned
- Malformed query string encoding causes incorrect JSON to be received
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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