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OpenxIntelligenceOpenxIntelligence/Coding-Agent-Skills/raffle-winner-picker/SKILL.md

raffle-winner-picker

Skill4 starsChanged 26 days agoMITView on GitHub

Picks random winners from lists, spreadsheets, or Google Sheets for giveaways, raffles, and contests. Ensures fair, unbiased selection with transparency.

35 other projects use a version of this, 4 of them edited.

Adopted by

Steady: 0 new projects took it in the last 4 weeks, none the 4 weeks before.thin data

Week of Sep 13: 0 new projectsWeek of Sep 20: 0 new projectsWeek of Sep 27: 0 new projectsWeek of Oct 4: 0 new projectsWeek of Oct 11: 0 new projectsWeek of Oct 18: 0 new projectsWeek of Oct 25: 0 new projectsWeek of Nov 1: 0 new projects
Sep 2026Oct 2026Nov 2026
New projects taking a version of this file each week, over the 8 weeks our latest run read: only 0 in all, so this is a hint, not a trend.

Most recently taken up by

Used with

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Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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The file

We split this skill into the rules it gives an agent

3 rules. 3 are common, 0 are distinctive, and 0 are very specific to this project.

  • 3

    Common

    Most of the 4 edited versions we read keep these.

  • 0

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Common:

    No bias or patterns

    line 94
  2. Common:

    Create CSV of attendee names and emails

    line 124
  3. Common:

    Check eligibility: Verify winner meets contest rules

    line 139

“Common” is measured: kept by at least 6 in 10 of the 4 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Raffle Winner Picker

This skill randomly selects winners from lists, spreadsheets, or Google Sheets for giveaways and contests.

When to Use This Skill

  • Running social media giveaways
  • Picking raffle winners at events
  • Randomly selecting participants for surveys or tests
  • Choosing winners from contest submissions
  • Fair distribution of limited spots or resources
  • Random team assignments

What This Skill Does

  1. Random Selection: Uses cryptographically random selection
  2. Multiple Sources: Works with CSV, Excel, Google Sheets, or plain lists
  3. Multiple Winners: Can pick one or multiple winners
  4. Duplicate Prevention: Ensures the same person can't win twice
  5. Transparent Results: Shows the selection process clearly
  6. Winner Details: Displays all relevant information about winners

How to Use

From Google Sheets

Pick a random row from this Google Sheet to select a winner 
for a giveaway: [Sheet URL]

From Local File

Pick 3 random winners from entries.csv

From List

Pick a random winner from this list:
- Alice (alice@email.com)
- Bob (bob@email.com)
- Carol (carol@email.com)
...

Multiple Winners

Pick 5 random winners from contest-entries.xlsx, 
make sure no duplicates

Example

User: "Pick a random row from this Google Sheet to select a winner for a giveaway."

Output:

Accessing Google Sheet...
Total entries found: 247

Randomly selecting winner...

🎉 WINNER SELECTED! 🎉

Row #142
Name: Sarah Johnson
Email: sarah.j@email.com
Entry Date: March 10, 2024
Comment: "Love your newsletter!"

Selection method: Cryptographically random
Timestamp: 2024-03-15 14:32:18 UTC

Would you like to:
- Pick another winner (excluding Sarah)?
- Export winner details?
- Pick runner-ups?

Inspired by: Lenny's use case - picking a Sora 2 giveaway winner from his subscriber Slack community

Features

Fair Selection

  • Uses secure random number generation
  • No bias or patterns
  • Transparent process
  • Repeatable with seed (for verification)

Exclusions

Pick a random winner excluding previous winners: 
Alice, Bob, Carol

Weighted Selection

Pick a winner with weighted probability based on 
the "entries" column (1 entry = 1 ticket)

Runner-ups

Pick 1 winner and 3 runner-ups from the list

Example Workflows

Social Media Giveaway

  1. Export entries from Google Form to Sheets
  2. "Pick a random winner from [Sheet URL]"
  3. Verify winner details
  4. Announce publicly with timestamp

Event Raffle

  1. Create CSV of attendee names and emails
  2. "Pick 10 random winners from attendees.csv"
  3. Export winner list
  4. Email winners directly

Team Assignment

  1. Have list of participants
  2. "Randomly split this list into 4 equal teams"
  3. Review assignments
  4. Share team rosters

Tips

  • Document the process: Save the timestamp and method
  • Public announcement: Share selection details for transparency
  • Check eligibility: Verify winner meets contest rules
  • Have backups: Pick runner-ups in case winner is ineligible
  • Export results: Save winner list for records

Privacy & Fairness

✓ Uses cryptographically secure randomness ✓ No manipulation possible ✓ Timestamp recorded for verification ✓ Can provide seed for third-party verification ✓ Respects data privacy

Common Use Cases

  • Newsletter subscriber giveaways
  • Product launch raffles
  • Conference ticket drawings
  • Beta tester selection
  • Focus group participant selection
  • Random prize distribution at events

Download now (ZIP)

Does it work?

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  • It worked
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  • It didn't
What did you use it for? e.g. Reviewing pull requests in a Rails app

Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.

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