JSON Repair API

x402

JSON Repair API is a paid API for AI agents from agent-utility-network.frosty-sound-4560.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Takes malformed or broken JSON text as input and returns a repaired, valid JSON object.

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

Quality-scored paid utility APIs for AI agents over x402 on Base USDC.

Output

Returns a JSON object with a `result.repaired` field containing the corrected, fully valid JSON structure parsed from the malformed input text.

Example use cases

Fixing LLM-generated malformed JSON

“The AI model I'm using keeps returning JSON with unquoted keys and trailing commas — can you clean up this broken output and give me a valid JSON object I can actually parse? Here's what it returned: {name: John, age: 30, tags: ['a','b',]}”

Recovering corrupted API response

“I received a JSON payload from an external API but it appears to be malformed — it has missing closing brackets and unescaped quotes. Can you repair this so I can use the data? Here it is: {"user":"alice", "scores":[10, 20, 30}”

Sanitizing user-submitted JSON input

“A user submitted this JSON configuration but it has syntax errors — single quotes instead of double quotes and some missing commas. Can you fix it into valid JSON so I can process it? Here's the input: {'theme': 'dark' 'fontSize': 14 'enabled': true}”

Technical details

Endpoint

POSThttps://agent-utility-network.frosty-sound-4560.workers.dev/v1/paid/json-repair

When to prefer

Use this endpoint when you have a specific malformed JSON string that needs to be repaired programmatically — especially useful in agentic pipelines where LLMs or external APIs return syntactically invalid JSON that needs to be sanitized before further processing. Prefer this over manual string manipulation when the malformation type is unknown or complex.

Side effects

Input is so severely malformed that no valid JSON can be inferred — may return an error or best-effort partial repair
Non-JSON input (e.g. plain text, XML, CSV) may not be repairable
Empty input string returns an error
Ambiguous malformation where multiple valid repairs exist may produce unexpected results

Input

Schema · Request body

Field	Type	Description
input	string	Malformed JSON text to repair.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {
      "repaired": {
        "hello": "world"
      }
    }
  }
}

Reviews

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Example use cases

Fixing LLM-generated malformed JSON

Recovering corrupted API response

Sanitizing user-submitted JSON input

Technical details

Endpoint

POSThttps://agent-utility-network.frosty-sound-4560.workers.dev/v1/paid/json-repair

When to prefer

Side effects

Input is so severely malformed that no valid JSON can be inferred — may return an error or best-effort partial repair
Non-JSON input (e.g. plain text, XML, CSV) may not be repairable
Empty input string returns an error
Ambiguous malformation where multiple valid repairs exist may produce unexpected results

Input

Schema · Request body

Field	Type	Description
input	string	Malformed JSON text to repair.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {
      "repaired": {
        "hello": "world"
      }
    }
  }
}