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Strict Semver Validator (No Leading v)
x402
Strict Semver Validator (No Leading v) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).
Validates whether a given string is a strict semantic version number without a leading 'v' prefix
Price / call$0.01
Success—
StatusUnknown
How this service works
Call when an agent needs whether a string is strict semver without a leading v. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-semver-strict first.
Output
A boolean or structured response indicating whether the input string strictly conforms to the semver specification without a leading 'v' character (e.g. '1.2.3' passes, 'v1.2.3' or '1.2' fails).
Example use cases
Validate release tag before publishing
“Before I push this release, check if '3.0.1' is a valid strict semver with no leading v — I need to make sure the tag format is correct.”
CI pipeline version format check
“My build pipeline needs to verify that '1.0.0-beta.2' conforms to strict semver without a v prefix — can you validate it?”
Package registry submission guard
“I'm about to submit a package and the registry requires strict semver without a leading v — can you confirm that 'v2.3.4' passes or fails that check?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-semver-strict?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a definitive, authoritative check that a version string is strict semver without a leading 'v', especially in automated pipelines where correctness matters and a paid validation signal is preferred over a local heuristic. Prefer the unpaid POST /v1/sandbox/check-semver-strict if cost is a concern and sandbox results are acceptable.
Side effects
- Empty or missing value field returns a validation error
- String exceeding 20000 characters rejected
- Network timeout on slow connections
- HTTP 402 if payment not provided or USDC balance insufficient
- Malformed JSON request body returns 4xx 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
Reviews
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Zero review prompt (fires after every successful call)
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