# Delx Commerce JSON Schema Quickcheck

> Delx Commerce JSON Schema Quickcheck is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Validates a JSON instance against a provided JSON schema and returns a lightweight list of validation errors.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/json-schema-quickcheck?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-json-schema-quickcheck-26a6ae40
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Chg298sYWvBvkJdhFHGoL

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-commerce-json-schema-quickcheck-26a6ae40 -d '<json body>'
```

Example prompt: Can you quickly check if this JSON object I have is valid according to this schema I'll paste in — I want to know if there are any errors before I send it downstream?

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.002 USDC), no-signup schema validation check and full draft-2020-12 compliance is not required. Ideal for agents that need to gate-check JSON payloads programmatically without spinning up a local validator library. Prefer alternatives if you need complete JSON Schema draft-2020-12 compliance, detailed error paths, or bulk batch validation.

## Known failure modes

- Malformed or non-object 'schema' field causes request rejection
- Malformed or non-object 'instance' field causes request rejection
- Payment failure via x402 protocol blocks request
- Quickcheck does not cover all draft-2020-12 keywords — complex schema features may not be evaluated
- Network timeout returns no result

## How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

## Output

Returns a JSON object with an 'ok' boolean indicating pass/fail, an 'errors' array listing any validation issues found, an 'error_count' integer, a 'schema' identifier string (delx/util-json-schema-quickcheck/v1), and a 'note' clarifying this is a quickcheck rather than full draft-2020-12 validation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "object",
   "description": "Input field: schema."
  },
  "instance": {
   "type": "object",
   "description": "Input field: instance."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "note": "quickcheck only — not full draft-2020-12 validation",
  "errors": [],
  "schema": "delx/util-json-schema-quickcheck/v1",
  "error_count": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-json-schema-quickcheck-26a6ae40/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)