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UUID v4 Validator
x402
UUID v4 Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-02).
Validates whether a given string is a valid UUID v4 format, without any network calls or external lookups.
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs whether a string is a valid uuid-v4. No network. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-v4 first.
Output
Returns a boolean-style verdict indicating whether the provided string is a valid UUID v4 (conforms to the 8-4-4-4-12 hexadecimal pattern with version bits set to 4 and the appropriate variant bits). No external network calls are made during validation.
Example use cases
Validate user-submitted UUID field
“A user just submitted the ID '3f6c1d2e-4a5b-4c3d-8e9f-1a2b3c4d5e6f' in a form — can you check if it's a properly formatted UUID v4 before I accept it?”
Sanitize IDs before database insert
“Before inserting this record, verify that 'not-a-uuid-at-all' is a valid UUID v4 so I don't corrupt the database.”
Debug auto-generated identifier
“My code is generating IDs and I want to confirm that 'g1234567-89ab-4cde-fg12-345678901234' is actually a valid UUID v4 — can you check it?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/id-uuid-v4?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, deterministic, offline check of whether a string is a valid UUID v4 — no LLM, no network lookups, just a regex/format check. Prefer the free sandbox endpoint POST /v1/sandbox/id-uuid-v4 first if available. Choose this paid endpoint only when the sandbox is unavailable or you need guaranteed SLA. Good for pipelines that need to validate UUIDs at scale without risk of external dependencies.
Side effects
- Empty or missing 'value' field returns an error
- Input exceeding 20,000 characters is rejected
- Malformed request body returns a 4xx error
- Payment of exactly $0.006 USDC required; incorrect payment causes 402 response
- String with correct length but wrong version/variant bits returns false (not an error)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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