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agent402.tools JSON Format
x402
agent402.tools JSON Format is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates, pretty-prints, or minifies a JSON string, returning parse errors with position details when the input is invalid.
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate, pretty-print, or minify JSON. Returns parse errors with position when invalid.
Output
Returns the formatted or minified JSON string if valid, or a parse error message including the position (line/column) of the syntax error when the input is invalid JSON.
Example use cases
Example prompt
“Can you validate and pretty-print this JSON for me using 4-space indentation: '{"name":"Alice","age":30,"active":true}'?”
Technical details
Endpoint
POSThttps://agent402.tools/api/json-formatWhen to prefer
Use this endpoint when you need to validate JSON correctness, reformat JSON for human readability with configurable indentation, or minify JSON by passing indent=0. It reports parse errors with position, making it useful for debugging malformed JSON. Prefer this over generic text-processing endpoints when the input is specifically JSON.
Side effects
- Input JSON exceeds 100KB limit — rejected with size error
- Malformed JSON input — returns parse error with position info
- Missing required 'json' field — returns validation error
- Non-numeric indent value — returns parameter error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| json | string | JSON text to validate/format (max 100KB) |
| indent | number | Spaces of indentation; 0 = minify (default 2) |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true,
"formatted": "{\n \"a\": 1\n}"
}
}Tags
x402
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