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Vextorium NPM Package Lookup
x402
Vextorium NPM Package Lookup is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).
Returns detailed metadata for an npm package: version history, download stats, dependencies, license, repository, and more.
Price / call$0.003
Success—
StatusUnknown
How this service works
npm package profile: latest version, description, license, repository, dependencies, unpacked size, weekly and monthly downloads, maintainers and deprecation flag. For dependency choice and audits.
Output
A JSON object with the package's name, latest version, total version count, license, description, homepage URL, repository URL, number of maintainers, number of dependencies, a list of direct dependencies, weekly and monthly download counts, decompressed size in KB, required Node.js version, deprecation status, and last modified timestamp — all sourced from the npm registry.
Example use cases
Vetting a dependency before adopting it
“I'm thinking of adding 'lodash' to my project — can you check its npm metadata and tell me how actively maintained it is, how many weekly downloads it gets, and what license it uses?”
Checking if an npm package is deprecated
“Is the npm package 'request' deprecated? Also tell me when it was last modified and what the latest version is.”
Auditing dependency footprint of a library
“I want to know how heavy the 'axios' npm package is — can you check its decompressed size, number of dependencies, and what Node.js version it requires?”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/npm-package?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, machine-readable npm package metadata in a single call without scraping npmjs.com yourself. Ideal for agents auditing dependencies, evaluating open source libraries, or enriching developer tooling workflows. Prefer this over parsing npm CLI output or scraping the npm website.
Side effects
- Package name not found on npm registry — returns null or error response
- Package exists but has no metadata fields populated (null values for optional fields)
- Network timeout reaching the npm registry
- Invalid or empty package name in request body
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| name | string |
Output
Schema · Response
{
"type": "json",
"example": {
"web": "https://expressjs.com/",
"source": "npm registry",
"license": "MIT",
"package": "express",
"modified": "2026-10-09T12:56:55.078Z",
"versions": 290,
"deprecated": null,
"repository": "git+https://github.com/expressjs/express.git",
"description": "Fast, unopinionated, minimalist web framework",
"maintainers": 5,
"dependencies": 28,
"last_version": "5.3.0",
"required_node": ">= 18",
"downloads_week": 145199376,
"downloads_month": 635513489,
"dependencies_list": [
"accepts",
"body-parser"
],
"decompressed_size_kb": 74.8
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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