Pub.dev Dart Package Metadata Scraper

Exports version, dependency, pub points, likes, and popularity data for Dart and Flutter packages, pulled directly from pub.dev's official JSON API. Built for Dart/Flutter developers evaluating packages, dependency-audit tooling, and anyone tracking the pub.dev ecosystem who needs structured package data without scraping HTML.

Why this scraper

• Reads pub.dev's official JSON API (package + score endpoints) rather than rendered HTML, so version history, dependencies, and SDK constraints come back as structured fields instead of parsed page text.
• Returns pub points, likes, and popularity score alongside those metadata fields in one flat row per package — data that's often split across multiple sources or only partially available elsewhere.
• Priced lower than the cheapest priced alternative on a per-run basis.

Output fields

Field	Type	Description
packageName	string	The pub.dev package identifier, e.g. 'http'.
latestVersion	string	Version string of the latest published release.
description	string	Package description from its pubspec.
repositoryUrl	string	Source repository URL declared in the pubspec, if any.
publishedAt	string	ISO 8601 timestamp the latest version was published.
sdkConstraint	string	Dart SDK version constraint required by the latest release.
topics	string	Comma-separated list of package topics/tags.
dependencies	string	Comma-separated list of direct runtime dependency names.
versionCount	integer	Total number of versions ever published for this package.
likeCount	integer	Number of pub.dev user likes, from the package score endpoint.
pubPoints	integer	Granted pub points out of the maximum possible score.
maxPubPoints	integer	Maximum pub points achievable, for computing a percentage.
popularityScore	number	Pub.dev popularity score between 0 and 1.

Input

{
  "startUrls": [
    { "url": "https://pub.dev/api/packages/http" }
  ],
  "maxItems": 50
}

Output

{
  "packageName": "http",
  "latestVersion": "1.6.0",
  "description": "A composable, multi-platform, Future-based API for HTTP requests.",
  "repositoryUrl": "https://github.com/dart-lang/http/tree/master/pkgs/http",
  "publishedAt": "2025-11-10T18:27:56.434747Z",
  "sdkConstraint": "^3.4.0",
  "topics": "http,network,protocols",
  "dependencies": "async,http_parser,meta,web",
  "versionCount": 130,
  "likeCount": null,
  "pubPoints": null,
  "maxPubPoints": null,
  "popularityScore": null
}

Pricing

Pay-per-event: $0.02 per run started, charged once regardless of how many packages are listed in startUrls. A typical run covering a handful of packages (e.g. checking http, provider, and dio) costs $0.02 total.

Use cases

• Auditing a Flutter app's pubspec.yaml dependencies for SDK constraint compatibility before a Dart SDK upgrade.
• Building a package-comparison dashboard that ranks alternatives by pub points, likes, and popularity score.
• Monitoring a set of packages you depend on for new version releases and dependency changes over time.