# Delx Commerce — JSON UUID Fields Check

> Delx Commerce — JSON UUID Fields Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Validates that specified fields in a JSON object contain valid UUID values, returning pass/fail status and a list of any invalid fields.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/json-uuid-fields-check?utm_source=zero.xyz
- Price: $0.001/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-uuid-fields-check-19251a11
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R2rtkP5yY6vMVW9jBIflr

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-uuid-fields-check-19251a11 -d '<json body>'
```

Example prompt: Can you check this JSON object to make sure the fields 'user_id', 'session_id', and 'tenant_id' all contain valid UUIDs? Here's the object: {"user_id": "550e8400-e29b-41d4-a716-446655440000", "session_id": "not-a-uuid", "tenant_id": "6ba7b810-9dad-11d1-80b4-00c04fd430c8"}.

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-use UUID format validator that leaves no data on the server (evidenced by input SHA-256 and retained:false), requires no API key signup, and settles instantly in USDC on Base or Solana. It is ideal for agentic pipelines that need verifiable, auditable validation with cryptographic evidence of what was checked, especially when integrating into workflows that already use the x402 micropayment protocol.

## Known failure modes

- Field name listed in 'fields' array does not exist in the provided object — may be treated as missing or invalid
- Malformed JSON input causes request rejection
- Exceeding maxItems (256 fields) or maxProperties (128 object keys) limits returns a validation error
- Empty fields array with no object properties results in a trivially passing response with no meaningful checks
- Network or payment failure via x402 protocol prevents the call from completing

## 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 a top-level 'status' (pass/fail), a 'result' object containing a boolean 'passed' flag and an 'invalid_fields' array listing any fields that failed UUID validation, plus an 'evidence' block with the SHA-256 hash of the input, a 'retained: false' flag confirming no data is stored, and an external_calls count of 0.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "fields": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 8192
   },
   "maxItems": 256,
   "description": "Fields supplied to JSON UUID Fields Check; used only for this bounded calculation and processed in memory without retention."
  },
  "object": {
   "type": "object",
   "description": "Object supplied to JSON UUID Fields Check; used only for this bounded calculation and processed in memory without retention.",
   "maxProperties": 128,
   "additionalProperties": true
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "passed": true,
   "invalid_fields": []
  },
  "schema": "delx/util-json-uuid-fields-check/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "8eeb5bc9deefa111f9ffecc6114b6f5c2adf64812314e89c753e9dbcb881aa3c",
   "external_calls": 0
  },
  "operation": "data_batch:json_uuid_fields_check"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-json-uuid-fields-check-19251a11/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)