Crates.io Rust Packages Scraper - Downloads & Versions

Here is one real result, with every field the actor returns (this record has both AI add-ons enabled):

{
  "name": "mio",
  "description": "Lightweight non-blocking I/O.",
  "crateUrl": "https://crates.io/crates/mio",
  "downloads": 933935778,
  "recentDownloads": 218423815,
  "maxVersion": "1.2.2",
  "newestVersion": "1.2.2",
  "numVersions": 79,
  "homepage": "https://github.com/tokio-rs/mio",
  "repository": "https://github.com/tokio-rs/mio",
  "documentation": null,
  "categories": [],
  "keywords": [],
  "createdAt": "2014-11-11T23:52:39.666778Z",
  "updatedAt": "2026-07-13T15:39:09.471139Z",
  "license": "MIT",
  "latestVersion": "1.2.2",
  "latestVersionSize": 111363,
  "latestVersionPublishedAt": "2026-07-13T15:39:09.471139Z",
  "latestVersionPublishedBy": {
    "login": "Thomasdezeeuw",
    "name": "Thomas de Zeeuw",
    "url": "https://github.com/Thomasdezeeuw"
  },
  "rustVersion": "1.71",
  "edition": "2021",
  "yanked": false,
  "maintainers": [
    { "login": "carllerche", "name": "Carl Lerche", "kind": "user", "url": "https://github.com/carllerche" },
    { "login": "github:tokio-rs:mio-core", "name": "mio-core", "kind": "team", "url": "https://github.com/tokio-rs" }
  ],
  "aiSummary": "Mio is a low-level library for handling non-blocking I/O operations in Rust, making it ideal for building high-performance network applications and servers.",
  "aiTags": ["rust", "io", "non-blocking", "lightweight", "asynchronous", "networking", "event-driven", "performance"],
  "source": "crates.io",
  "observedAt": "2026-08-14T07:12:15.416Z"
}

The most complete crates.io scraper available. It returns every field the Rust package registry exposes for each crate, including total and recent downloads, latest version with license, MSRV, package size and publish date, and the full maintainer list with GitHub handles, plus two optional AI add-ons, and searches the registry by any keyword.

📥 Input · 📤 Output · 💰 Pricing · ▶️ Examples

Table of contents

• What it does
• Quickstart
• Input reference
• Output reference
• Example output record
• Run via API and CLI
• Fetch results
• Billing and limits
• FAQ and troubleshooting

What it does

The actor searches the public crates.io registry for your keyword, sorts by download count, and writes one normalized record per crate to the run's dataset. Download counts and version counts are parsed to numbers, and each crate is enriched from its detail page with the license, minimum supported Rust version, package size, latest publisher and the full maintainer/owner list. Missing source values are returned as null, never invented.

Data covers the entire public crates.io Rust package registry. Two optional AI add-ons (withAiSummary, withAiTags) can enrich each record; they are opt-in, billed only when they produce output, and disabled on free Apify plans.

Quickstart

Open the actor, paste this into the input, and press Run. It returns the 2 most-downloaded crates matching "async runtime".

{
  "searchQuery": "async runtime",
  "maxCrates": 2
}

Leave the AI add-ons off (default) for the raw crate fields. With an empty input the actor searches serialization and returns the top 10 crates.

Input reference

Field	Type	Required	Default	Description
searchQuery	string	no	serialization	Keyword to search Rust crates, for example async runtime, web framework, http client.
maxCrates	integer	no	10	Maximum crates to collect. Free Apify plans are capped at 10 per run.
withAiSummary	boolean	no	false	Add a plain-English AI summary of each crate from its description. Paid add-on, disabled on free plans.
withAiTags	boolean	no	false	Generate concise topic tags for each crate via AI. Paid add-on, disabled on free plans.

Output reference

One dataset item per crate, sorted by download count. Types: string, number, boolean, string[], object, or null when the source value is absent.

Field	Type	Description
name	string	Crate name.
description	string	Crate description, or null.
crateUrl	string	crates.io page URL.
downloads	number	Total all-time downloads.
recentDownloads	number	Recent (90-day) downloads.
maxVersion	string	Highest stable version.
newestVersion	string	Newest published version.
numVersions	number	Number of published versions.
homepage	string	Homepage URL, or null.
repository	string	Source repository URL, or null.
documentation	string	Documentation URL, or null.
categories	string[]	crates.io categories.
keywords	string[]	crates.io keywords.
createdAt	string	First-published timestamp (ISO 8601).
updatedAt	string	Last-updated timestamp (ISO 8601).
license	string	Latest version license (SPDX), or null.
latestVersion	string	Latest version number.
latestVersionSize	number	Latest version package size in bytes, or null.
latestVersionPublishedAt	string	Latest version publish timestamp, or null.
latestVersionPublishedBy	object	Publisher of the latest version (login, name, url), or null.
rustVersion	string	Minimum supported Rust version (MSRV), or null.
edition	string	Rust edition, for example 2021, or null.
yanked	boolean	Whether the latest version is yanked, or null.
maintainers	object[]	Owners/maintainers (login, name, kind, url).
aiSummary	string	AI plain-English summary. Present only when withAiSummary is enabled.
aiTags	string[]	AI topic tags. Present only when withAiTags is enabled.
source	string	Constant source tag. Always crates.io.
observedAt	string	ISO 8601 timestamp of when the record was collected.

On a failed run, a single item with a populated error field is written instead.

Example output record

Real record from a live run (input {"searchQuery":"async runtime","maxCrates":2}):

{
  "name": "mio",
  "description": "Lightweight non-blocking I/O.",
  "crateUrl": "https://crates.io/crates/mio",
  "downloads": 933935778,
  "recentDownloads": 218423815,
  "maxVersion": "1.2.2",
  "numVersions": 79,
  "repository": "https://github.com/tokio-rs/mio",
  "createdAt": "2014-11-11T23:52:39.666778Z",
  "updatedAt": "2026-07-13T15:39:09.471139Z",
  "license": "MIT",
  "latestVersion": "1.2.2",
  "latestVersionSize": 111363,
  "rustVersion": "1.71",
  "edition": "2021",
  "yanked": false,
  "maintainers": [
    { "login": "carllerche", "name": "Carl Lerche", "kind": "user", "url": "https://github.com/carllerche" }
  ],
  "source": "crates.io",
  "observedAt": "2026-08-14T07:12:15.416Z"
}

Run via API and CLI

Start a run and wait for it to finish, then read the dataset. Replace <TOKEN> with your Apify API token.

Run synchronously and get dataset items in one call:

curl -X POST "https://api.apify.com/v2/acts/scrapers_lat~crates-io-scraper/run-sync-get-dataset-items?token=<TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"searchQuery":"async runtime","maxCrates":25}'

Start a run asynchronously:

curl -X POST "https://api.apify.com/v2/acts/scrapers_lat~crates-io-scraper/runs?token=<TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"searchQuery":"web framework","maxCrates":100}'

Apify CLI:

apify call scrapers_lat/crates-io-scraper \
  --input '{"searchQuery":"http client","maxCrates":10}'

Fetch results

Every run writes to a dataset. Fetch items as JSON, CSV, or Excel by changing format:

# JSON
curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<TOKEN>&clean=true&format=json"

# CSV
curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<TOKEN>&clean=true&format=csv"

# Paginate large datasets
curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<TOKEN>&offset=1000&limit=1000"

<DATASET_ID> is returned as defaultDatasetId in the run object. Use offset and limit to page through large result sets. clean=true drops empty and internal fields.

Billing and limits

• Pay per result. You are charged per crate returned (result event). See the pricing tab for the current per-result price.
• AI add-ons billed separately. withAiSummary and withAiTags each charge their own event only when they produce output, and are disabled on free plans.
• No charge on failure. If a run errors, the actor writes a single item with a populated error field and does not charge for it. Empty runs cost nothing.
• Spend cap respected. Set maxTotalChargeUsd on the run; once reached, the actor stops emitting and charging further billable results.
• Free Apify plans are capped at 10 records per run. Upgrade for higher maxCrates.

FAQ and troubleshooting

A run returned 0 records. Why? The keyword matched no crates. Try a broader keyword. Zero-result runs are not charged.

How are results ordered? Crates are returned by total download count, so the most-used ones come first.

Which fields are numeric? downloads, recentDownloads, numVersions and latestVersionSize are parsed as numbers so you can sort and filter directly.

How fresh is the data? Download counts and versions are read live at run time, so each record reflects the moment of the run (see observedAt).

Do the AI add-ons work on a free plan? No. The AI add-ons require a paid Apify plan and are disabled automatically for free users. The base crate fields are always returned.

Is this an official crates.io tool? No. This actor is independent and has no affiliation with crates.io or the Rust project. It reads only data that is publicly available through the crates.io API. Use the results in accordance with the source's terms.

Related scrapers

• NPM Packages Scraper: package metadata, downloads and versions from the npm registry.
• GitHub Repositories Scraper: repositories with stars, forks and topics.
• Docker Hub Images Scraper: images, pulls and tags from Docker Hub.

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Independent tool, not affiliated with crates.io or the Rust project. Accesses only publicly available crate data. Use in accordance with the source's terms.