# UUID v3 (URL Namespace) Generator

> UUID v3 (URL Namespace) Generator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Generates a deterministic UUID v3 by hashing a given text string in the URL namespace using MD5.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/uuid-name-v3-url?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/uuid-v3-url-namespace-generator-9ab55ddb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IWSj52gbBHgh7y7L9ncTg

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 uuid-v3-url-namespace-generator-9ab55ddb -d '<json body>'
```

Example prompt: Generate a deterministic UUID v3 in the URL namespace for the text 'https://example.com/product/42' — I need the same UUID every time I use that string.

## When to prefer this

Choose this endpoint when you need a deterministic, reproducible UUID v3 in the URL namespace — particularly when idempotency matters (same input must always yield same UUID). Prefer this over UUID v4 when you need stable identifiers for deduplication, caching, or content-addressable lookups. Use the free sandbox POST /v1/sandbox/uuid-name-v3-url first if available; fall back to this paid endpoint only when the sandbox is unavailable or rate-limited.

## Known failure modes

- Empty or missing text input returns a validation error
- Text exceeding 100,000 characters is rejected
- Payment failure (insufficient USDC) results in a 402 response with no UUID returned
- Network timeout or server error returns a 5xx with no result

## How this service works

Call when an agent needs a deterministic UUID v3 in the url namespace. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/uuid-name-v3-url first.

## Output

Returns a UUID v3 string deterministically computed by hashing the input text within the UUID URL namespace (using MD5), always yielding the same UUID for the same input text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "examples": [
    "Hello, World!"
   ],
   "maxLength": 100000,
   "minLength": 1,
   "description": "Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/uuid-v3-url-namespace-generator-9ab55ddb/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)