# AgentShelf UUID Validator

> AgentShelf UUID Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Validates whether a given string is a properly formatted UUID, returning a true/false result with no network calls.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/id-uuid?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-uuid-validator-085baaa2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_636kQ5t_OcbhCKCiNO0yf

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 agentshelf-uuid-validator-085baaa2 -d '<json body>'
```

Example prompt: Can you check whether '550e8400-e29b-41d4-a716-446655440000' is a valid UUID?

## When to prefer this

Use this endpoint when you need a quick, offline UUID format check within an agentic workflow and don't have access to a free local validator. Prefer the unpaid sandbox endpoint POST /v1/sandbox/id-uuid when available to avoid the $0.003 cost. Choose this paid endpoint only when the sandbox is unavailable or when operating in a production payment-enabled context.

## Known failure modes

- Empty or missing value field returns an error
- String exceeding 20,000 characters rejected
- Malformed request body returns validation error
- Payment of exactly $0.003 USDC required; insufficient or missing payment causes rejection

## How this service works

Call when an agent needs whether a string is a valid uuid. No network. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/id-uuid first.

## Output

Returns a boolean or structured result indicating whether the input string conforms to the UUID format specification, with no external network calls made during validation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "description": "JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."
  },
  "value": {
   "type": "string",
   "examples": [
    "11111111-1111-4111-8111-111111111111"
   ],
   "maxLength": 20000,
   "minLength": 1,
   "description": "Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."
  },
  "schema": {
   "description": "JSON Schema document for schema-check SKUs. Omit it on string checks."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-uuid-validator-085baaa2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)