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JSON Repair API
x402
JSON Repair API is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-10-09).
Repairs broken or malformed JSON strings (trailing commas, single quotes, unquoted keys, truncated, comments, markdown-embedded) and returns valid JSON
Price / call$0.054001
Success—
StatusUnknown
How this service works
Repair broken JSON: trailing commas, single quotes, unquoted keys, truncated, comments, mixed with markdown. Returns valid JSON.
Output
Returns a valid, well-formed JSON string with all syntax errors corrected — trailing commas removed, single quotes replaced with double quotes, unquoted keys quoted, truncated structures closed, comments stripped, and markdown removed.
Example use cases
Example prompt
“This JSON is broken — it has trailing commas and unquoted keys and I can't parse it. Can you fix it for me? Here it is: {name: 'Alice', age: 30, hobbies: ['reading', 'coding',]}”
Technical details
Endpoint
GEThttps://api.strale.io/x402/json-repair?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a JSON string that fails to parse due to common syntax issues like trailing commas, single quotes, unquoted keys, embedded comments, truncation, or markdown wrapping. Especially useful for fixing LLM-generated JSON output, API responses that deviate from the spec, or user-provided JSON that hasn't been validated.
Side effects
- Input JSON is too severely corrupted to repair — returns error or best-effort partial result
- Input is not JSON at all (e.g. plain text or binary) — may return unexpected result
- Ambiguous structure where repair could produce multiple valid interpretations — may choose one arbitrarily
- Empty input string — likely returns error or empty object
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"json": "{name: 'Alice', age: 30, hobbies: ['reading', 'coding',]}"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"json": "{\n \"name\": \"Alice\",\n \"age\": 30,\n \"hobbies\": [\n \"reading\",\n \"coding\"\n ]\n}",
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.054000000000000006,
"settlement_id": "0x6d5e3444bb0c99ca373c059880d3934a38fb85738e8ae2b5594e1e6d2ece5685"
},
"capability": "json-repair",
"latency_ms": 0,
"provenance": {
"source": "algorithmic",
"fetched_at": "2026-06-16T01:23:53.969Z"
}
},
"valid": true,
"parsed": {
"age": 30,
"name": "Alice",
"hobbies": [
"reading",
"coding"
]
},
"fixes_applied": [
"Fixed quote style (single → double)",
"Quoted unquoted keys",
"Removed trailing commas"
]
}Tags
x402
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