crates.io Scraper

Extract Rust crate metadata, download counts, version info, and dependency graphs from crates.io. Built on spider-browser .

Get started Docs

target
crates.io: success rate
99.9%: latency
~4ms

POST /fetch/crates.io/

return_format

curl -X POST https://api.spider.cloud/fetch/crates.io/ \
  -H "Authorization: Bearer $SPIDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"return_format": "json"}'

200 OK · cache hit · response shape

{
  "url": "https://crates.io/",
  "status": 200,
  "data": {
    "crate_name": "string",
    "version": "string",
    "downloads": "string",
    "description": "string",
    "license": "string",
    "dependencies": "string",
    "authors": "string",
    "categories": "string"
  }
}

# crates.io Scraper

**Crate name**: string
**Version**: string
**Downloads**: string
**Description**: string
**License**: string
**Dependencies**: string
**Authors**: string
**Categories**: string

Quick start

Extract data in minutes.

Structured JSON from crates.io with a single POST. AI-resolved selectors, cached on the first call.

crates-io-scraper.ts

import { SpiderBrowser } from "spider-browser";

const spider = new SpiderBrowser({
  apiKey: process.env.SPIDER_API_KEY!,
});

await spider.connect();
const page = spider.page!;
await page.goto("https://crates.io/crates/serde");
await page.content(8000);

const data = await page.evaluate(`(() => {
  const name = document.querySelector("h1")?.textContent?.trim();
  const version = document.querySelector("[class*='version'] [class*='num']")?.textContent?.trim();
  const downloads = document.querySelector("[class*='downloads'] [class*='num']")?.textContent?.trim();
  const desc = document.querySelector("[class*='description']")?.textContent?.trim();
  const deps = [...document.querySelectorAll("[class*='dependency'] a")].map(a => a.textContent?.trim());
  return JSON.stringify({ name, version, downloads, desc, deps: deps.slice(0, 10) });
})()`);

console.log(JSON.parse(data));
await spider.close();

curl -X POST https://api.spider.cloud/fetch/crates.io/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"return_format": "json"}'

import requests

resp = requests.post(
    "https://api.spider.cloud/fetch/crates.io/",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={"return_format": "json"},
)
print(resp.json())

const resp = await fetch("https://api.spider.cloud/fetch/crates.io/", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ return_format: "json" }),
});
const data = await resp.json();
console.log(data);