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24K Labs JSON Formatter
x402
24K Labs JSON Formatter is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Pretty-print, minify, or sort keys of a JSON string while reporting validity and size delta
Price / call$0.001
Success—
StatusUnknown
How this service works
Pretty-print, minify, or sort-keys a JSON string; reports validity and size delta.
Output
Returns the transformed JSON string (pretty-printed, minified, or key-sorted), a validity flag indicating whether the input was well-formed JSON, the original size in bytes, the output size in bytes, and the size delta showing the difference between them.
Example use cases
Minify JSON for API payload
“I need to minify this JSON before sending it in a request — strip all the whitespace and tell me how many bytes I save: {"user": {"id": 42, "name": "Bob", "active": true}}.”
Sort JSON keys for diffing
“Sort all the keys in this JSON alphabetically so I can diff it against another config file more easily: {"zebra": 1, "apple": 2, "mango": 3}.”
Validate and pretty-print config JSON
“Check if this JSON is valid and pretty-print it with indentation so I can review it: {"host":"localhost","port":8080,"debug":false}.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/json-formatWhen to prefer
Choose this endpoint when you need a quick, cheap ($0.001) serverless JSON formatting operation without standing up your own parser — especially useful in agent pipelines where JSON needs to be normalized before storage, diffing, or display. Prefer it over general-purpose code execution when you want a dedicated, reliable JSON tool with built-in validity reporting and size analytics in a single call.
Side effects
- Invalid JSON input returns a validation error with position or description of the syntax error
- Empty or missing JSON body returns a 400 bad request
- Unsupported mode value returns an error listing valid options
- Extremely large JSON payloads may be rejected or time out
- Malformed request body (non-JSON content type) returns a parsing error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| json | string | |
| indent | number | |
| sort_keys | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "{\n \"a\": 2,\n \"b\": 1\n}"
}
}Tags
x402
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