# rust-lang/crates.io

The Rust package registry

Repository: https://github.com/rust-lang/crates.io
Canonical: https://ross.abutalabs.com/products/cratesio
Homepage: https://crates.io
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: rust, hacktoberfest
Last push: 2026-08-26T22:44:14+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 4447, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3683, forks 747 (observed 2026-08-28T04:08:13.807831+00:00)

## What it is
The source code and infrastructure for crates.io, the official package registry for the Rust programming language. It includes a Rust backend built with axum and diesel, a SvelteKit/TypeScript frontend, and a custom background worker system.

## Use cases
- search for Rust packages
- publish a crate to the Rust registry
- browse crate documentation and versions
- query the crates.io API for package metadata
- download Rust dependencies via cargo
- contribute to the Rust package registry website

## When to choose
- you want to publish or discover Rust packages
- you need programmatic access to Rust package metadata via an API
- you want to contribute to or self-study the infrastructure behind a large package registry

## When to avoid
- you need a package registry for languages other than Rust
- you want a lightweight self-hosted registry for private crates without significant infrastructure work
- you just need to install Rust packages - use cargo directly instead

## Facets
- artifact type: service
- maturity: stable
- function: package-manager, http-server, web-framework, search-engine, api-framework
- domain: developer-tools, web-development, programming-languages, self-hosted
- platform: rust
- tags: package-registry, cargo, crates, rust-ecosystem, sveltekit, axum, diesel, web-server, docker, linux

## Member repositories
- rust-lang/crates.io (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:13.807831+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:31:12.349854+00:00, confidence not recorded.
  - readme: https://github.com/rust-lang/crates.io (fetched 2026-08-28T04:08:13.807831+00:00, sha 87176fa3a401)
- Data as of 2026-08-30T08:39:29.467469+00:00.