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2s.io npm Package Lookup
x402
2s.io npm Package Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0012/call, status unknown (last checked 2026-09-15).
Look up detailed metadata for any npm package by name, including description, versions, maintainers, license, keywords, and distribution tags.
Price / call$0.0012
Success—
StatusUnknown
How this service works
Look up an npm package by name (supports scoped packages like @sentry/node). Returns description, homepage, repository, license, author + maintainers list, keywords, distTags (latest/beta/rc/etc.), latest version + publication date, and the 50 most recent versions with their publish dates + deprecation status. ~3M JavaScript/TypeScript packages. npm public registry.
Output
Returns a structured record for the npm package including: description, homepage, repository link, license, author, list of maintainers, keywords, dist-tags (latest/beta/rc/etc.), latest version with publication date, and the 50 most recent versions each with their publish date and deprecation status.
Example use cases
Example prompt
“Can you look up the npm package @sentry/node and tell me the latest version, who the maintainers are, its license, and whether any recent versions have been deprecated?”
Technical details
Endpoint
GEThttps://2s.io/api/registry/npm-lookupWhen to prefer
Use this endpoint when you need rich, structured npm package metadata including version history, maintainers, dist-tags, and deprecation info — especially when you need to inspect scoped packages like @scope/name. Prefer this over scraping npmjs.com or calling the raw npm registry API directly, as it returns a curated, normalized response covering ~3M packages.
Side effects
- Package not found — returns 404 if the package name does not exist in the npm registry
- Invalid scoped package name format — malformed @scope/name results in an error
- Rate limit or payment failure — x402 payment not accepted or quota exceeded
- Network timeout — registry unreachable or slow to respond
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "express"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"items": [
{
"name": "express",
"author": "TJ Holowaychuk",
"license": "MIT",
"distTags": {
"latest": "5.2.1",
"latest-4": "4.22.2"
},
"homepage": "https://expressjs.com/",
"keywords": [
"express",
"framework",
"sinatra",
"web",
"http",
"rest",
"restful",
"router",
"app",
"api"
],
"versions": [
{
"version": "4.22.2",
"published": "2026-05-11T18:50:00.007Z",
"deprecated": null
},
{
"version": "4.22.1",
"published": "2025-12-01T20:50:41.122Z",
"deprecated": null
},
{
"version": "5.2.1",
"published": "2025-12-01T20:49:43.268Z",
"deprecated": null
},
{
"version": "5.2.0",
"published": "2025-12-01T16:23:57.541Z",
"deprecated": null
},
{
"version": "4.22.0",
"published": "2025-12-01T16:23:07.582Z",
"deprecated": null
},
{
"version": "5.1.0",
"published": "2025-03-31T14:01:22.509Z",
"deprecated": null
},
{
"version": "4.21.2",
"published": "2024-12-05T22:31:40.945Z",
"deprecated": null
},
{
"version": "5.0.1",
"published": "2024-10-08T19:42:44.129Z",
"deprecated": null
},
{
"version": "4.21.1",
"published": "2024-10-08T18:41:33.908Z",
"deprecated": null
},
{
"version": "4.21.0",
"published": "2024-09-11T22:33:36.801Z",
"deprecated": null
},
{
"version": "5.0.0",
"published": "2024-09-10T04:40:34.348Z",
"deprecated": null
},
{
"version": "4.20.0",
"published": "2024-09-10T02:07:55.590Z",
"deprecated": null
},
{
"version": "5.0.0-beta.3",
"published": "2024-03-25T14:42:32.769Z",
"deprecated": null
},
{
"version": "4.19.2",
"published": "2024-03-25T14:30:36.103Z",
"deprecated": null
},
{
"version": "5.0.0-beta.2",
"published": "2024-03-21T03:01:22.099Z",
"deprecated": null
},
{
"version": "4.19.1",
"published": "2024-03-20T22:19:45.604Z",
"deprecated": null
},
{
"version": "4.19.0",
"published": "2024-03-20T15:14:37.159Z",
"deprecated": null
},
{
"version": "4.18.3",
"published": "2024-02-29T11:50:55.579Z",
"deprecated": null
},
{
"version": "4.18.2",
"published": "2022-10-08T20:14:32.495Z",
"deprecated": null
},
{
"version": "4.18.1",
"published": "2022-04-29T19:33:40.441Z",
"deprecated": null
},
{
"version": "4.18.0",
"published": "2022-04-25T19:13:24.027Z",
"deprecated": null
},
{
"version": "4.17.3",
"published": "2022-02-17T02:06:13.691Z",
"deprecated": null
},
{
"version": "5.0.0-beta.1",
"published": "2022-02-15T01:11:25.229Z",
"deprecated": null
},
{
"version": "4.17.2",
"published": "2021-12-17T03:48:56.946Z",
"deprecated": null
},
{
"version": "5.0.0-alpha.8",
"published": "2020-03-26T00:57:02.755Z",
"deprecated": null
},
{
"version": "4.17.1",
"published": "2019-05-26T04:25:34.606Z",
"deprecated": null
},
{
"version": "4.17.0",
"published": "2019-05-17T01:57:40.690Z",
"deprecated": null
},
{
"version": "5.0.0-alpha.7",
"published": "2018-10-27T03:12:11.060Z",
"deprecated": null
},
{
"version": "4.16.4",
"published": "2018-10-11T03:59:14.308Z",
"deprecated": null
},
{
"version": "4.16.3",
"published": "2018-03-12T17:50:14.119Z",
"deprecated": null
},
{
"version": "4.16.2",
"published": "2017-10-10T03:13:46.364Z",
"deprecated": null
},
{
"version": "4.16.1",
"published": "2017-09-29T20:38:43.661Z",
"deprecated": null
},
{
"version": "4.16.0",
"published": "2017-09-28T18:22:30.775Z",
"deprecated": null
},
{
"version": "5.0.0-alpha.6",
"published": "2017-09-25T05:32:38.266Z",
"deprecated": null
},
{
"version": "4.15.5",
"published": "2017-09-25T05:25:16.528Z",
"deprecated": null
},
{
"version": "4.15.4",
"published": "2017-08-07T02:12:12.791Z",
"deprecated": null
},
{
"version": "4.15.3",
"published": "2017-05-17T14:17:40.516Z",
"deprecated": null
},
{
"version": "5.0.0-alpha.5",
"published": "2017-03-06T13:51:05.877Z",
"deprecated": null
},
{
"version": "4.15.2",
"published": "2017-03-06T13:42:44.853Z",
"deprecated": null
},
{
"version": "4.15.1",
"published": "2017-03-06T05:08:33.474Z",
"deprecated": null
},
{
"version": "5.0.0-alpha.4",
"published": "2017-03-02T00:30:07.791Z",
"deprecated": null
},
{
"version": "4.15.0",
"published": "2017-03-01T22:28:55.984Z",
"deprecated": null
},
{
"version": "5.0.0-alpha.3",
"published": "2017-01-29T03:28:41.274Z",
"deprecated": null
},
{
"version": "4.14.1",
"published": "2017-01-28T22:33:15.950Z",
"deprecated": null
},
{
"version": "4.14.0",
"published": "2016-06-16T16:43:30.648Z",
"deprecated": null
},
{
"version": "4.13.4",
"published": "2016-01-22T02:15:21.453Z",
"deprecated": null
},
{
"version": "4.13.3",
"published": "2015-08-03T05:04:40.888Z",
"deprecated": null
},
{
"version": "4.13.2",
"published": "2015-07-31T21:10:49.838Z",
"deprecated": null
},
{
"version": "3.21.2",
"published": "2015-07-31T20:17:34.079Z",
"deprecated": "No longer maintained. Please upgrade to a stable version."
},
{
"version": "5.0.0-alpha.2",
"published": "2015-07-07T05:46:20.081Z",
"deprecated": null
}
],
"repository": {
"url": "git+https://github.com/expressjs/express.git",
"type": "git"
},
"description": "Fast, unopinionated, minimalist web framework",
"maintainers": [
"wesleytodd",
"jonchurch",
"ctcpip",
"ulisesgascon",
"sheplu"
],
"latestVersion": "5.2.1",
"latestPublished": "2025-12-01T20:49:43.268Z"
}
],
"total": 1,
"source": {
"url": "https://registry.npmjs.org/",
"license": "Public registry metadata",
"provider": "npm public registry"
}
},
"meta": {
"cost": {
"usd": 0.0012,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "registry.npm-lookup",
"settlement": {
"txHash": "0xd59991dcd54ed7511693f4a2efac1e21d4dbc263726f2bc3ad006ce0e4501c5c",
"network": "eip155:8453",
"success": true
}
}
}Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"author": {},
"license": {
"type": "string"
},
"distTags": {
"type": "object",
"properties": {
"rc": {
"type": "string"
},
"beta": {
"type": "string"
},
"latest": {
"type": "string"
}
}
},
"homepage": {
"type": "string"
},
"keywords": {
"type": "array",
"items": {
"type": "string"
}
},
"versions": {
"type": "array",
"items": {
"type": "object",
"properties": {
"version": {
"type": "string"
},
"published": {
"type": "string"
},
"deprecated": {}
}
}
},
"repository": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"type": {
"type": "string"
}
}
},
"description": {
"type": "string"
},
"maintainers": {
"type": "array",
"items": {
"type": "string"
}
},
"latestVersion": {
"type": "string"
},
"latestPublished": {
"type": "string"
}
}
}
},
"total": {
"type": "integer"
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
},
"example": {
"ok": true,
"items": [
{
"name": "react",
"author": null,
"license": "MIT",
"distTags": {
"rc": "19.0.0-rc.1",
"beta": "19.0.0-beta-...",
"latest": "19.2.7"
},
"homepage": "https://react.dev/",
"keywords": [
"react",
"jsx",
"ui"
],
"versions": [
{
"version": "19.2.7",
"published": "2026-05-20T...",
"deprecated": null
}
],
"repository": {
"url": "git+https://github.com/facebook/react.git",
"type": "git"
},
"description": "React is a JavaScript library for building user interfaces.",
"maintainers": [
"acdlite",
"gnoff",
"rickhanlonii"
],
"latestVersion": "19.2.7",
"latestPublished": "2026-05-20T..."
}
],
"total": 1,
"source": {
"url": "https://registry.npmjs.org/",
"license": "Public registry metadata",
"provider": "npm public registry"
}
}
}Tags
x402
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