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apiacre.com JSON Repair
x402
apiacre.com JSON Repair is a paid API for AI agents from apiacre.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Repairs malformed JSON by removing Markdown fences, comments, single-quoted strings, unquoted keys, Python literals, and trailing commas, with strict duplicate key and non-finite number rejection
Price / call$0.005
Success—
StatusUnknown
How this service works
Repair caller-supplied malformed JSON by safely removing an outer Markdown fence, comments, single-quoted strings, unquoted identifier keys, Python literals, and trailing commas, with transformation hashes and strict rejection of duplicate keys or non-finite numbers.
Output
Returns a valid, strictly-conformant JSON document with all recoverable syntax errors fixed, plus a transformation hash describing what was changed. Rejects input that contains duplicate keys or non-finite numbers (e.g. Infinity, NaN) with a clear error.
Example use cases
Fix LLM-generated JSON output
“The model returned JSON wrapped in a ```json block with trailing commas and Python-style True/False values — can you repair that into valid JSON I can actually parse?”
Sanitize user-submitted JSON config
“A user pasted a config file that has JavaScript-style // comments and unquoted keys like {name: 'Alice'} — clean it up into valid strict JSON for me.”
Normalize API response with duplicate keys
“I got a JSON response from a third-party API that has duplicate keys and single-quoted strings — can you repair it and reject it outright if the duplicates make it ambiguous?”
Technical details
Endpoint
POSThttps://apiacre.com/v1/data/json-repairWhen to prefer
Use this endpoint when you receive JSON from an LLM, user input, or a loosely-conformant API that has common syntax issues like Markdown fences, comments, trailing commas, single-quoted strings, unquoted keys, or Python literals. Prefer it over generic JSON parsers when you need deterministic transformation hashes for auditing, strict duplicate key rejection, and safe handling of Python-dialect JSON without writing custom cleanup code.
Side effects
- Input contains duplicate keys — endpoint returns a strict rejection error rather than silently resolving
- Non-finite numbers (Infinity, NaN) trigger rejection rather than repair
- Input is so severely malformed that no recovery heuristic applies — returns parse failure
- Payload too large may result in a timeout or size error
- Non-JSON content types (e.g. raw binary) cannot be repaired
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| content | string | |
| repairs | array |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"error": null,
"valid": true,
"repair": {
"version": "apiacre-json-repair/1",
"permitted": [
"markdown_fence",
"comments",
"single_quoted_strings",
"unquoted_keys",
"python_literals",
"trailing_commas"
],
"executionOrder": [
"markdown_fence",
"comments",
"single_quoted_strings",
"unquoted_keys",
"python_literals",
"trailing_commas"
],
"appliedStrategyCount": 6,
"outputCanonicalization": "json-sort-keys-indent-2-utf8"
},
"content": "{\n \"active\": true,\n \"rows\": [\n 1,\n 2,\n 3\n ],\n \"status\": \"ok\"\n}",
"repaired": true,
"warnings": [],
"validInput": false,
"inputSha256": "9dd0095fe6576143aa8e835ced506030e8065e2589c4478a4be1342dc1aaa2ed",
"outputSha256": "b1b2333ad8949036facfd8ce006b4da0e612468a0e8a9b016514208af13321d5",
"attemptSha256": "4db25e6c34e4f507a7b3addba28d9c40bda76572ef52c9a7b49facdea7f19440",
"appliedRepairs": [
{
"strategy": "markdown_fence",
"afterSha256": "e47f9ab1e0ee78db083237290fcdd35f83668f2b939c92e434b2103af7856f4f",
"occurrences": 1,
"beforeSha256": "9dd0095fe6576143aa8e835ced506030e8065e2589c4478a4be1342dc1aaa2ed"
}
]
},
"meta": {
"cached": false,
"sources": [],
"warnings": [],
"duration_ms": 42,
"next_actions": [
{
"path": "/v1/data/schema",
"title": "JSON Schema generator",
"method": "POST",
"reason": "Infer a reusable Draft 2020-12 contract from the successfully repaired JSON.",
"service": "data.schema"
}
]
},
"service": "data.json-repair",
"version": "1",
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a"
}
}Tags
x402
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