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API · /npm-api

npm Registry API

healthy 4,485 Subscribers

Everything about npm packages in one clean API. Look up a package’s latest metadata — version, description, license, homepage, repository, author, keywords, dist-tags, dependencies and maintainers — list its full version history with release dates, pull download statistics for the last day, week, month or year, and search the registry across more than three million packages. Sourced live from the public npm registry and returned as tidy JSON through a fast, reliable API. Ideal for developer dashboards and tooling, package and dependency analytics, supply-chain and security checks, CI/CD and documentation sites.

#npm #registry #packages #javascript #node #dev-tools
api.oanor.com/npm-api
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Machine-readable spec so AI agents can integrate this API.

/api/npm-api/openapi.json
/api/npm-api/llms.txt

Discovery: GET /api/index.json lists every API.

npm Registry API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
446 ms
Server probes · 24h
Subscribers
4,485
active
Total calls
76
last 7 days
status Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 5,000 requests/month, 2 req/s
  • Metadata, versions, downloads & search
  • 3M+ packages, live registry
  • No credit card
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Basic

€3.00 /month

  • 60,000 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 60,000 requests/month, 5 req/s
  • Full version history with dates
  • Scoped packages supported
  • Commercial use, email support
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Pro

€12.00 /month

  • 400,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 400,000 requests/month, 15 req/s
  • High-volume package analytics
  • Day/week/month/year downloads
  • Priority email support
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Mega

€32.00 /month

  • 2,000,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,000,000 requests/month, 40 req/s
  • Dashboards & supply-chain scale
  • Maximum concurrency
  • Priority support
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How popular is that npm package? Get download counts and trends for any npm package straight from npm's public download API. Pull the total downloads over a period (last day, week, month, year or any custom YYYY-MM-DD:YYYY-MM-DD range), the full per-day download time series, the monthly totals over the last year to spot growth or decline, and compare several packages side by side ranked by downloads (up to 128 at once, scoped @org/name packages supported). Every call is live (no cache). 5 endpoints. Built for popularity dashboards, package-comparison pages, trend charts, dependency-health scoring and "which library won" analyses. Distinct from an npm registry-metadata lookup — this is the download time series. No upstream key, no cache.

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The open VS Code extension registry — Open VSX — as an API. Open VSX is the vendor-neutral marketplace behind VSCodium, Gitpod, Eclipse Theia, Cursor and many other editors. Look up any extension by its namespace.name id for its display name and description, latest version, publisher, total download count, average rating, license, categories and tags, repository and homepage links, and the exact `code --install-extension` command; read an extension's full version history; and search the registry by keyword, ranked by downloads. Covers the editor-extension ecosystem from Python, Java and ESLint to Prettier, GitLens and the major themes and language packs. Live from the official open-vsx.org API. Ideal for editor and IDE tooling, extension catalogs and dashboards, and developer-portal integrations. Open data from Open VSX.

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for npm Registry API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call npm Registry API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for npm Registry API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does npm Registry API cost?
npm Registry API has a free tier with 100 calls / month. Paid plans start at €3.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is npm Registry API GDPR-compliant?
All requests to npm Registry API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/npm-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/npm-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/npm-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/npm-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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