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PennyRail npm Latest Package Info
x402
PennyRail npm Latest Package Info is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Fetches the latest package metadata from npm for a given package name, delivered as a paid machine-readable settlement service.
Price / call$0.003
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the latest npm registry metadata for the requested package, which may include fields such as the current version number, package description, author, repository URL, dependencies, and publication timestamp.
Example use cases
Check latest version of a dependency
“What is the latest published version of the 'axios' package on npm?”
Audit a project's outdated packages
“Look up the current npm metadata for 'express' so I can see if we're behind on our project's dependency.”
Validate a package exists before installing
“Can you confirm that 'zod' exists on npm and fetch its latest package info including description and version?”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/network/npm.latest--npm-latest-package-infoWhen to prefer
Use this endpoint when an AI agent needs to programmatically fetch the latest npm package metadata as part of a paid, metered workflow — especially in automated pipelines where a lightweight per-call cost ($0.003 USDC) is acceptable and a machine-readable settlement mechanism (x402) is required. Prefer alternatives like direct npm registry API calls when authentication and payment infrastructure are not in place.
Side effects
- Package name not found on npm registry — returns error or empty result
- Malformed or empty input string — validation error
- npm registry is unreachable or rate-limited — service may return timeout or upstream error
- Payment failure via x402 protocol — request not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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