GitHub Stargazer Data Extractor

Extract accurate profile data from GitHub stargazers (users that star a repository).

Given a repo URL, the actor returns a list of records like this one:

{
  "login": "username",
  "email": "user@example.com",
  "name": "Full Name",
  "location": "San Francisco, CA",
  "company": "Acme Inc",
  "blog": "https://example.com",
  "twitter": "handle",
  "followers": 120,
  "public_repos": 34,
  "profile_url": "https://github.com/username",
  "email_found": true
}

Features

• High Accuracy: Only returns emails from actual stargazers (not random contributors)
• Fast Processing: Concurrent extraction with intelligent rate limiting
• Token Rotation: Support for multiple GitHub tokens for higher throughput
• Proven Results: 92.8% average hit rate across major repositories

Input

Using this actor requires a Github account, as you need to provide at least one Personal Access Token with 'public_repo_access'.

This results in faster, more reliable results.

Input fields:

Field	Required	Description
repo	Yes	Full GitHub repository URL
tokens	Yes	Array of GitHub Personal Access Tokens (PAT) with public_repo scope
max_stargazers	No	Limit number of stargazers to process (0 or empty = unlimited)

How to get your Github Personal Access Token

1. Go to GitHub Settings → Tokens
2. Click "Generate new token (classic)"
3. Select public_repo scope
4. Copy the token (starts with ghp_)
5. Add to the tokens array

Output

Each stargazer record may include:

{
  "login": "username",
  "email": "user@example.com",
  "name": "Full Name",
  "location": "San Francisco, CA",
  "company": "Acme Inc",
  "blog": "https://example.com",
  "twitter": "handle",
  "followers": 120,
  "public_repos": 34,
  "profile_url": "https://github.com/username",
  "email_found": true
}

• email_found: true if email was found, false otherwise

Some fields can be undefined because some users keep them private.

Benchmark Results (800 stargazers tested across 8 repositories)

Overall Hit Rate: 92.8% (742/800 emails found)

Repository	Stargazers	Emails Found	Hit Rate
torvalds/linux	100	98	98.0%
rust-lang/rust	100	98	98.0%
facebook/react	100	96	96.0%
nodejs/node	100	95	95.0%
golang/go	100	92	92.0%
microsoft/vscode	100	91	91.0%
tensorflow/tensorflow	100	90	90.0%
openclaw/openclaw	100	82	82.0%

Speed Metrics (with 1 token)

• Average: ~15.7 seconds per 100 stargazers
• Throughput: ~380 stargazers per minute
• Range: 13-21 seconds (depending on repository characteristics)

Use Cases

• Developer outreach campaigns
• Building email lists for product launches
• Research on open source contributors
• Community engagement

Notes

• Only processes public repositories
• Respects GitHub rate limits automatically
• Filters out noreply@github.com addresses
• Optimized for speed and accuracy