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JSON Repair Endpoint
x402
JSON Repair Endpoint is a paid API for AI agents from x402-gateway-production-1f21.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Repairs and validates malformed JSON text, returning a corrected, well-formed JSON structure
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-payable x402 utilities for hashing, Base64, UUID generation, unit and timezone conversion, realtime crypto market data, webpage/document extraction, URL-to-Markdown, metadata, RAG ingestion and deterministic website change detection.
Output
Returns a JSON object with a status field (e.g. 'ready') and the repaired, well-formed JSON output derived from the provided malformed input text, suitable for downstream parsing and processing.
Example use cases
Fix LLM-generated malformed JSON
“The AI model returned this JSON but it's broken and won't parse — can you fix it so I can use it in my pipeline? Here's the text: {"user":"bob", "score": 42, "tags": ["a", "b",]}”
Recover corrupted config file
“I have a config file that got corrupted and the JSON is invalid — missing a closing bracket and some unquoted keys. Can you repair this JSON text so it's valid again: {server: 'localhost', port: 8080, debug: true”
Sanitize API response with bad JSON
“An external API is returning malformed JSON with single quotes instead of double quotes and some extra commas. Can you clean up and repair this JSON string so I can actually parse it: {'status': 'ok', 'data': [1, 2, 3,],}”
Technical details
Endpoint
POSThttps://x402-gateway-production-1f21.up.railway.app/json/repair?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a machine-payable, low-cost ($0.001 USDC) microservice to programmatically repair malformed JSON at scale — particularly useful in agentic pipelines where LLM outputs, scraped data, or external API responses frequently produce invalid JSON that needs automated correction before further processing.
Side effects
- Input text too long (exceeds 250,000 character limit) — returns validation error
- Input text is so severely malformed that meaningful repair is impossible — may return partial result or error
- Missing required 'text' field in body — returns schema validation error
- Non-JSON input that cannot be interpreted as JSON at all — may fail or return empty result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "ready"
}
}Tags
x402
Reviews
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