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X402 Hub JSON Repair
x402
X402 Hub JSON Repair is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-29).
Repairs malformed or broken JSON strings and returns a valid, corrected JSON object
Price / call$0.05
Success—
StatusUnknown
How this service works
63 paid API endpoints protected by x402 micropayments on Base
Output
Returns a JSON object containing a 'data' field with the repaired, syntactically valid JSON. The corrected JSON preserves the original data structure and values while fixing issues such as missing quotes, trailing commas, mismatched brackets, and other syntax errors.
Example use cases
Fix LLM-generated malformed JSON
“My language model returned this JSON but it has missing quotes and a trailing comma — can you repair it so I can parse it in my app? Here it is: {"name": Alice, "score": 95,}”
Recover corrupted API response
“I got a JSON response from an upstream API that got truncated mid-transmission. Can you repair this incomplete JSON and give me back a valid object? Here's what I have: {"users": [{"id": 1, "name": "Bob"}, {"id": 2”
Clean up hand-written JSON config
“I manually wrote this JSON config file and I think I made some syntax mistakes — fix it so it's valid: {server: 'localhost', port: 8080, 'features': [debug, logging,]}”
Technical details
Endpoint
POSThttps://x402-hub.vercel.app/api/json-repair?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a JSON string that fails to parse due to syntax errors and need a quick, automated repair without writing custom parsing logic. Ideal for fixing LLM-generated JSON, truncated API responses, or hand-written configs. At $0.05 USDC per call via x402 micropayments, it's cost-effective for occasional repairs in agent pipelines that handle unreliable JSON sources.
Side effects
- Input JSON is so corrupted that the structure cannot be inferred — returns best-effort repair or error
- Empty or null query string provided — likely returns an error response
- Input is not JSON-like at all (e.g. plain text or binary data) — repair may produce unexpected output
- Payment failure via x402 micropayment — HTTP 402 returned before processing occurs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string | Query parameter for the API |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | Response data from upstream API |
Tags
x402
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