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GPT-5.5 x402 JSON Validate Tool
x402
GPT-5.5 x402 JSON Validate Tool is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.0001/call, status unknown (last checked 2026-09-13).
Validates and optionally pretty-prints JSON input, returning parse status and formatted output via x402 micropayment on Base.
Price / call$0.0001
Success—
StatusUnknown
How this service works
Validate JSON text or normalize a JSON value, returning parse status, type, size, and optional formatted output. This deterministic endpoint does not call an upstream model. Pay up to $0.001 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.
Output
Returns a JSON object with ok (boolean), tool name ('jsonValidate'), a summary of parse status, and optionally formatted/pretty-printed JSON output up to the specified character limit.
Example use cases
Example prompt
“Can you check if this is valid JSON and show me the pretty-printed version: '{"name":"Alice","age":30,"active":true}'?”
Technical details
Endpoint
GEThttps://gpt55.558686.xyz/v1/tools/json-validateWhen to prefer
Use this endpoint when you need a quick, cheap ($0.0001 USDC) serverless JSON validation and formatting check without a subscription, especially in automated pipelines that already use x402 micropayment infrastructure on Base.
Side effects
- Missing required 'json', 'text', or 'value' query parameter returns error
- Invalid or malformed input causes parse failure with ok: false
- max_output_chars out of range (must be 100-20000) causes validation error
- Payment failure via x402 returns 402 status
- Network timeout on the gateway returns connection error
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"json": {
"age": 30,
"name": "Alice",
"active": true
},
"pretty": true,
"max_output_chars": 5000,
"include_formatted": true
}
},
"output": {
"type": "object",
"example": {
"ok": true,
"tool": "json-validate",
"fetchedAt": "2024-01-15T10:30:00Z"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"type": "object",
"bytes": 39,
"chars": 39,
"valid": true,
"source": "string",
"fetchedAt": "2026-06-18T06:19:32.446Z",
"formatted": "{\n \"name\": \"Alice\",\n \"age\": 30,\n \"active\": true\n}",
"truncated": false,
"topLevelKeys": 3
}Tags
x402
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