# Delx Is UUID Shape

> Delx Is UUID Shape is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Validates whether a given string conforms to the UUID format locally, without network calls or data retention.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/is-uuid-shape
- 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/delx-is-uuid-shape-13313afd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5Uhvb7AP9D_RriJ7l1JXb

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-is-uuid-shape-13313afd -d '<json body>'
```

Example prompt: Can you check whether '550e8400-e29b-41d4-a716-446655440000' is a properly formatted UUID before I use it as a storage key?

## When to prefer this

Choose this endpoint when you need a lightweight, stateless, no-network UUID format check — particularly useful in agent pipelines where you want to guard storage writes or API calls with a cheap ($0.001) local validation step before committing to more expensive operations. Prefer it over regex-in-code when you want a consistent, auditable external validation call that requires no API keys or auth setup.

## Known failure modes

- Missing or null 'uuid' field in request body returns an error or false result
- Non-string input types may cause a validation error
- Payment not fulfilled via x402 protocol results in a 402 Payment Required response
- Malformed request body returns a 4xx error

## How this service works

Validate UUID string shape. Call when you check correlation IDs before storage keys. Returns valid boolean for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

## Output

Returns a JSON object containing a boolean field (e.g. 'valid') indicating whether the input string matches the UUID format. No external lookups are performed; the result is a purely local shape check.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "uuid": {
   "type": "string",
   "description": "Input field: uuid."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "uuid": "123e4567-e89b-12d3-a456-426614174000",
  "valid": true,
  "schema": "delx/util-is-uuid-shape/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-is-uuid-shape-13313afd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)