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Delx SemVer Compare Lite
x402
Delx SemVer Compare Lite is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Compares two semantic version strings (a vs b) and returns a comparison result (-1, 0, or 1) indicating which version is older, equal, or newer.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compare two semver triples (-1,0,1). Call when you decide upgrade direction for agent packages. Returns cmp and ok 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 with a 'cmp' field set to -1 (a is older than b), 0 (a equals b), or 1 (a is newer than b), plus an 'ok' boolean confirming the operation succeeded. No external network calls or data retention occur.
Example use cases
Agent package upgrade decision
“Before I upgrade my agent runtime, compare version 3.1.4 to 3.2.0 and tell me if 3.1.4 is behind so I know whether to proceed with the upgrade.”
Dependency freshness check
“I have a library pinned at 0.9.11 but the latest release is 0.9.9 — can you compare those two semver strings and confirm which one is actually newer?”
CI pipeline version gating
“In my release pipeline I need to know if the build artifact version 2.5.0 is the same as, older than, or newer than the previously deployed version 2.4.99 — run a semver compare for me.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/semver-compare-liteWhen to prefer
Choose this endpoint when you need a lightweight, stateless, no-dependency semver ordering check — especially in agent pipelines where you want to avoid importing a full semver library or making network calls to package registries. Ideal for determining upgrade direction between two known version strings without any authentication setup. At $0.001 USDC per call it is cost-effective for automated orchestration loops.
Side effects
- Malformed semver string (e.g. missing patch segment, non-numeric parts) may return an error or unexpected result
- Empty or null input for either 'a' or 'b' will likely result in a validation failure
- Payment failure via x402 on Base will prevent the call from completing
- Version strings with pre-release labels (e.g. 1.0.0-alpha) may not be handled as expected if the service only supports plain triples
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| a | string | Input field: a. |
| b | string | Input field: b. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"cmp": -1,
"schema": "delx/util-semver-compare-lite/v1"
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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