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API · /crates-api

Rust Crates API

healthy 4,084 Subscribers

The crates.io registry — home of the Rust ecosystem — as an API. Look up any Rust crate for its description, latest and recent versions, total and recent download counts, license, repository, documentation and homepage links, keywords and categories; search and rank the whole registry by relevance, downloads, recent downloads, recent updates or newest; and inspect the dependency tree of a crate's newest (or any) version. Live from the official crates.io API. Ideal for package dashboards, dependency tooling, security/supply-chain analysis, developer portals and Rust ecosystem analytics. Open data from crates.io.

#rust #crates #cargo #packages #developer-tools #registry
api.oanor.com/crates-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
989 ms
Server probes · 24h
Subscribers
4,084
active
Total calls
190
last 7 days
status Full status page → · 16 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 3,550 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 3,550 calls/month
  • 2 req/sec
  • Crate + search + deps
  • No credit card
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Starter

€4.15 /month

  • 48,500 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 48.5k calls/month
  • 8 req/sec
  • Registry search & ranking
  • Email support
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Pro

€12.35 /month

  • 238,500 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 238.5k calls/month
  • 20 req/sec
  • Dependency / supply-chain tooling
  • Priority support
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Mega

€33.45 /month

  • 1,196,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.2M calls/month
  • 50 req/sec
  • Ecosystem-analytics platform
  • Dedicated SLA
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The Arch User Repository (AUR) as an API. Look up any AUR package for its version, description, upstream URL, maintainer and submitter, community votes and popularity score, license, out-of-date flag, keywords and full dependency lists (depends, make-depends, opt-depends), plus its source snapshot and ready-to-run git-clone command; search the whole AUR by name, description, maintainer, dependencies or keywords (results sorted by popularity); and list every package maintained by a given user. Covers the 90,000+ community-maintained packages of Arch Linux, from yay, paru and visual-studio-code-bin to google-chrome and spotify. Live from the official AUR RPC. Ideal for Arch/AUR helpers and dashboards, package and dependency tooling, and Linux developer portals. Open data from the Arch User Repository.

api.oanor.com/aur-api

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The macOS and Linux package manager — Homebrew (brew) — as an API. Look up any formula (command-line package) for its description, latest version, license, homepage, dependencies and build dependencies, caveats and deprecation status; look up any cask (graphical macOS app) for its version, bundled apps and homepage; and search the whole registry of 8,300+ formulae and 7,600+ casks by name and description. Each result comes with the exact `brew install` command. Covers the Homebrew world from wget, git, ffmpeg, node and python to Firefox, Visual Studio Code, Docker and Rectangle. Live from the official formulae.brew.sh API. Ideal for developer dashboards, package and dependency tooling, dotfiles and setup automation, and macOS app catalogs. Open data from Homebrew.

api.oanor.com/brew-api

Go Modules API

The Go package ecosystem as an API. Look up any Go module by its import path for its latest version, license, source repository, total version count and known security advisories; read a module's full version history with publication dates; and get a module's declared dependencies — direct and indirect — parsed straight from its go.mod, with the required Go version. Covers the entire public Go module graph, from github.com/gin-gonic/gin, github.com/spf13/cobra and golang.org/x/text to gorm.io/gorm and k8s.io/client-go. Live from the official Go module proxy (proxy.golang.org) and Google's deps.dev. Ideal for dependency and supply-chain tooling, SBOM generation, package dashboards and Go developer portals. Modules are addressed by full import path. Open data.

api.oanor.com/gomod-api

CTAN API

The TeX and LaTeX package ecosystem — CTAN, the Comprehensive TeX Archive Network — as an API. Look up any of CTAN's ~6,900 packages for its caption and description, latest version and date, license, authors (with resolved names), aliases, topics, home and repository links, and whether it ships with MiKTeX and TeX Live; search the whole registry by name and caption; and resolve any CTAN author id to a name. Covers the TeX/LaTeX world from PGF/TikZ, Beamer and KOMA-Script to amsmath, biblatex and listings. Live from the official CTAN JSON API. Ideal for LaTeX editors and tooling, package dashboards, academic-publishing pipelines and TeX ecosystem analytics. Open data from CTAN.

api.oanor.com/ctan-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Rust Crates API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Rust Crates API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Rust Crates 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 Rust Crates API cost?
Rust Crates API has a free tier with 100 calls / month. Paid plans start at €4.15 / 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 Rust Crates API GDPR-compliant?
All requests to Rust Crates 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/crates-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/crates-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/crates-api/SOME_PATH");
curl_setopt($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/crates-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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