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KEVAREMESH JSON Validation
x402
KEVAREMESH JSON Validation is a paid API for AI agents from kevaremesh-web.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-03).
Validates, parses, and pretty-prints a JSON string, returning whether it is valid JSON along with normalized and formatted representations.
Price / call$0.001
Success—
StatusUnknown
How this service works
Buyer-first MCP procurement gateway that discovers, compares and routes live x402 APIs without making the buyer choose a provider.
Output
Returns an object containing: a boolean indicating whether the input is valid JSON, an error string if parsing failed (null if valid), a pretty-printed version of the JSON with indentation, and a compact normalized JSON string. Also includes service metadata such as product name, tool name, and a timestamp.
Example use cases
Validating LLM-generated JSON output
“The model just returned this JSON string — can you verify it's actually valid and show me a formatted version so I can spot any issues: '{"items":[{"id":1,"name":"widget"},{"id":2,"name":}]}'?”
Pre-flight check before API submission
“Before I send this config payload to the deployment API, can you confirm it's syntactically valid JSON and give me both the compact and pretty-printed forms: '{"env":"production","replicas":3,"timeout":30}'?”
Debugging malformed JSON in agent pipeline
“My agent pipeline is failing and I think the JSON is broken — can you validate this blob and tell me exactly what's wrong with it: '{"user":"bob","roles":["admin","editor",}'?”
Technical details
Endpoint
POSThttps://kevaremesh-web.vercel.app/api/x402/json-validation-cdp-json-validation?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap ($0.001 USDC), programmatic JSON validation step inside an AI agent pipeline — especially when the JSON comes from untrusted sources like LLM outputs, user inputs, or external APIs. It is ideal when you want both validity checking and a normalized or human-readable form in a single call, without spinning up a local parser. Prefer it over generic code execution for lightweight, stateless JSON checks.
Side effects
- Input exceeds 256 KiB limit — service will reject with a limitation error
- Input is not a string (e.g. already-parsed object passed instead of text) — may return unexpected behavior
- Completely empty input — may return invalid=true with a parse error
- Malformed UTF-8 or binary data — parsing error returned in the error field
- Payment failure via x402 protocol — request rejected before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | |
| pretty | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"type": "object",
"error": null,
"valid": true,
"pretty_json": "{\n \"a\": 1\n}",
"normalized_json": "{\"a\":1}"
},
"product": "kevaremesh_json_validation_cdp_json_validation_v2",
"service": "KEVAREMESH",
"tool_name": "kevaremesh_json_validate",
"limitations": [
"Maximum input 256 KiB"
],
"generated_at": "2026-09-18T00:00:00.000Z"
}
}Tags
x402
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