# Agent Utility Network UUID Validator

> Agent Utility Network UUID Validator is a paid API for AI agents from agent-utility-network.frosty-sound-4560.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Validates a UUID string, returning its validity, RFC variant, version number, and normalized form.

## Facts

- Endpoint: POST https://agent-utility-network.frosty-sound-4560.workers.dev/v1/paid/uuid-validate
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-utility-network-uuid-validator-c9ce99d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R1EXvwv97ttgWv3D-75aa

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 agent-utility-network-uuid-validator-c9ce99d7 -d '<json body>'
```

Example prompt: Can you check whether '550e8400-e29b-41d4-a716-446655440000' is a valid UUID and tell me its version and variant?

## When to prefer this

Choose this endpoint when you need a structured, machine-readable breakdown of a UUID — not just a boolean pass/fail, but also the RFC variant, version number, and normalized form. Useful when ingesting UUIDs from untrusted sources, routing logic depends on UUID version, or you need to canonicalize a UUID before storage or comparison. At $0.001 USDC per call over x402, it is appropriate for per-request agent workflows rather than high-volume batch validation.

## Known failure modes

- String shorter than 32 characters or longer than 45 characters is rejected at input validation
- Non-hex characters cause validation failure with valid=false
- Completely unparseable input may return an error status rather than a structured result
- Network or worker downtime may cause 5xx responses
- Payment failure via x402 may block the request before it reaches the validation logic

## How this service works

Quality-scored paid utility APIs for AI agents over x402 on Base USDC.

## Output

A JSON object containing: `valid` (boolean indicating if the UUID is well-formed), `variant` (e.g. 'rfc4122'), `version` (integer UUID version, e.g. 4), and `normalized` (the canonical dashed UUID string). If invalid, `valid` will be false and version/variant fields may be absent or null.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "uuid": {
   "type": "string",
   "maxLength": 45,
   "minLength": 32
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "valid": true,
   "variant": "rfc4122",
   "version": 4,
   "normalized": "550e8400-e29b-41d4-a716-446655440000"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-utility-network-uuid-validator-c9ce99d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-utility-network.frosty-sound-4560.workers.dev](https://www.zero.xyz/host/agent-utility-network.frosty-sound-4560.workers.dev/llms.txt)