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Delx Json Validate
x402
Delx Json Validate is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Validates, normalizes, and pretty-prints a JSON payload, returning structured errors or a formatted result for $0.001 USDC per call.
Price / call$0.001
Success—
StatusUnknown
How this service works
JSON validation API for agents: validate, normalize, and pretty-print a bounded JSON payload for $0.001 USDC with structured errors—no API key or upstream. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.
Output
Returns a structured response indicating whether the JSON is valid, a normalized and pretty-printed version of the JSON if valid, and structured error details (position, message, type) if invalid. No API key is required; payment is $0.001 USDC per call via x402.
Example use cases
Pre-flight JSON payload check
“Before I send this config to the server, validate it and tell me if there are any JSON errors: {"host":"localhost","port":8080,"debug":true,"tags":["prod"]}”
Formatting minified JSON for review
“I have this minified JSON blob I received from an API and I need it pretty-printed so I can read it: {"id":1,"status":"ok","data":{"user":"bob","score":42}}”
Catching syntax errors in agent-generated JSON
“My pipeline just generated this JSON string — can you check it for syntax errors and show me the structured error details if it's broken: {"items":[{"id":1,"value":"foo"},{"id":2,"value":}]}”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/json-validateWhen to prefer
Choose this endpoint when you need a quick, cheap, no-auth JSON validation step inside an agent pipeline — especially when you want structured error output (not just a boolean) and a pretty-printed normalized form. It's ideal for validating agent-generated JSON, user-submitted config blobs, or API responses before further processing. Prefer it over rolling your own parser when you need consistent structured error formatting and pay-per-use pricing with no API key setup.
Side effects
- Payload too large — if the JSON exceeds the bounded size limit, the endpoint will reject it
- Unparseable input — non-JSON text returns a structured error with position and description of the syntax fault
- Network timeout — rare but possible under load
- Payment failure — x402 payment not settled results in a 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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