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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.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
307 ms
Server probes · 24h
Subscribers
4,485
active
Total calls
16
last 7 days
status Full status page → · 16 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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Built by

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Related APIs

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PyPI Registry API

Python package data from PyPI as clean JSON. Look up any package’s latest metadata — version, summary, license, repository, author, keywords, required Python version, dependencies, supported Python versions and total release count — browse its full version history with release dates and yanked flags, or get the details and distribution files for one specific version. Sourced live from the public Python Package Index and returned through a fast, reliable API. Ideal for developer dashboards and tooling, package and dependency analytics, security and supply-chain checks, CI/CD and documentation sites.

api.oanor.com/pypi-api

Astronomy API

A fast, fully-local astronomy and ephemeris engine: compute the equatorial (right-ascension/declination) and horizontal (azimuth/altitude) positions of the Sun, Moon and all planets for any observer and moment, get precise rise, set and transit (culmination) times for any body, read detailed lunar state (phase angle, named phase, illuminated fraction, apparent magnitude, geocentric distance, age since the last new moon and the dates of the next new/first-quarter/full/last-quarter moons), and list the exact equinoxes and solstices of any year. Every endpoint accepts input via the query string or the request body. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for weather and tide apps, astrophotography planners, calendars, solar/energy tools, Islamic and lunar calendars, and education.

api.oanor.com/astronomy-api

Geohash API

Work with geohashes through a fast, fully-local API. Encode a latitude/longitude pair into a geohash at any precision (1–12), decode a geohash back to its centre coordinates with the exact bounding box and error margins, list the eight neighbouring geohash cells (north, north-east, east and so on), or get the bounding box, centre and dimensions of a cell. Geohashes turn coordinates into short sortable strings that are perfect for spatial indexing, proximity grouping and map tiling. Pure server-side computation with no third-party upstream, so responses are instant and the service is always available. Ideal for geospatial indexing and search, proximity and nearby queries, map tiles and clustering, IoT and fleet tracking, and location bucketing in databases.

api.oanor.com/geohash-api

Bcrypt API

Hash and verify passwords with bcrypt, server-side. Generate a salted bcrypt hash at a cost factor you choose (4–14), check a plaintext password against an existing hash, or inspect a hash to read its bcrypt version, cost factor and salt. Fully compatible with bcrypt hashes from PHP ($2y$), Node, Python and others, so you can verify and migrate existing credentials. Pure server-side computation with no third-party upstream, so it is always available — and it offloads the deliberately CPU-intensive hashing work from your own servers. Ideal for adding password authentication, credential migration, auth tooling, testing and no-code backends.

api.oanor.com/bcrypt-api

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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