x402-tools JSON Validate

x402

x402-tools JSON Validate is a paid API for AI agents from x402.nichospt.net, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Validates a JSON value against a provided JSON Schema (draft 2020-12) and returns whether it is valid along with any errors

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-call utility APIs for AI agents, settled in USDC via the x402 protocol.

Output

Returns a JSON object with a boolean `valid` field (true/false) and an `errors` array listing any JSON Schema validation errors found in the input data. If valid, errors is an empty array.

Example use cases

Validate API response before processing

“Before I store this API response in the database, check if it's valid against my expected schema { "type": "object", "properties": { "id": { "type": "integer" }, "email": { "type": "string", "format": "email" }, "active": { "type": "boolean" } }, "required": ["id", "email", "active"] } — here's the payload: { "id": "abc", "email": "user@example.com" }. Tell me all the errors.”

Check config file schema compliance

“I have this config file { "timeout": 30, "retries": "five", "endpoint": "https://api.example.com" } and I need to know if it matches my schema { "type": "object", "properties": { "timeout": { "type": "integer" }, "retries": { "type": "integer" }, "endpoint": { "type": "string", "format": "uri" } }, "required": ["timeout", "retries", "endpoint"] }. Is it valid and what needs to be fixed?”

Validate user input before storing

“A user just submitted this form data { "username": "jdoe", "age": -5, "role": "superadmin" } and I want to validate it against { "type": "object", "properties": { "username": { "type": "string", "minLength": 3 }, "age": { "type": "integer", "minimum": 0 }, "role": { "type": "string", "enum": ["admin", "editor", "viewer"] } }, "required": ["username", "age", "role"] } before saving it. What validation errors come back?”

Technical details

Endpoint

POSThttps://x402.nichospt.net/json-validate?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a quick, pay-per-use JSON Schema validation call without standing up your own validator, especially in agentic workflows where you need to verify arbitrary JSON payloads against draft 2020-12 schemas on demand.

Side effects

Malformed schema object causes a 400 or error response
Data field missing from request body
Schema not draft 2020-12 compatible causing unexpected behavior
Payment not settled causes 402 response and endpoint is blocked
Network timeout on large or deeply nested JSON inputs

Input

Schema · Request body

Field	Type	Description
data	—	The JSON value to validate (any type)
schema	object	A JSON Schema (draft 2020-12 compatible)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "valid": true,
    "errors": []
  }
}

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