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Caret Semver Range Validator
x402
Caret Semver Range Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).
Checks whether a given string is a valid caret semver range (e.g. ^1.2.3)
Price / call$0.002
Success—
StatusUnknown
How this service works
Call when an agent needs whether a string is a caret semver range. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-semver-caret first.
Output
A boolean or classification indicating whether the provided string is a valid caret semver range (e.g. ^major.minor.patch format), along with any relevant validation details.
Example use cases
Dependency constraint format check
“I have a version string from a package.json — '^2.3.1' — can you confirm it's a valid caret semver range before I use it in my dependency resolver?”
User-submitted version input validation
“A user typed '^0.10.x' as their version range — is that actually a valid caret semver range or should I reject it?”
CI pipeline version spec validation
“Before my CI pipeline processes this version constraint '~1.0.0', can you tell me if it qualifies as a caret semver range?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-semver-caret?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a deterministic, programmatic check of whether a string is a caret semver range and want to avoid spinning up an LLM or writing custom regex logic. It is especially useful in automated pipelines processing package manifests, dependency files, or user-submitted version constraints. Prefer the free sandbox endpoint POST /v1/sandbox/check-semver-caret when available to avoid the $0.002 USDC cost.
Side effects
- Empty string input returns an error (minLength:1 required)
- Input exceeding 20000 characters is rejected
- Malformed request body returns 4xx error
- Payment of $0.002 USDC not provided results in 402 Payment Required response
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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