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grooveASSIGN

The right reviewer, every time.

Open Beta — Currently free for everyone. Always free for open source.

The Problem

  • Wrong reviewers: CODEOWNERS assigns based on paths, not who actually wrote the code
  • Manual assignment: Tech leads waste hours triaging PRs
  • Overloaded seniors: Same people get everything, become bottlenecks

The Solution

grooveASSIGN automatically assigns developers who actually know the code. Line-level blame analysis, not just file history.

Install Free →

Installs in 30 seconds. Works across your entire org.

How It Works

graph LR
    A[New PR] --> B[Get Changed Files]
    B --> C[Run git blame]
    C --> D[Count Lines per Author]
    D --> E[Apply Filters]
    E --> F[Score Candidates]
    F --> G[Assign Top N]
    G --> H[GitHub Reviewers]
  1. PR opened — no reviewers assigned
  2. Blame analysis — we run git blame on changed lines
  3. Candidate scoring — code ownership, recent activity, current workload
  4. Timing boost — prefer reviewers likely to be online now
  5. Assignment — top reviewers assigned (excludes bots, author, overloaded devs)

Blame Analysis in Detail

graph TD
    Start[Changed Lines] --> Parse[Parse Diff]
    Parse --> Files[For Each File]
    Files --> Blame[git blame -L start,end]
    Blame --> Author[Extract Author]
    Author --> Weight[Apply Recency Weight]
    Weight --> Aggregate[Aggregate Scores]
    Aggregate --> Rank[Rank by Total Lines]
    Rank --> Filter{Pass Filters?}
    Filter -->|Yes| Candidate[Add to Candidates]
    Filter -->|No| Skip[Skip]
    Candidate --> Done{More Files?}
    Skip --> Done
    Done -->|Yes| Files
    Done -->|No| Assign[Assign Top N]

Recency weighting:

  • Last 30 days: 100% weight
  • 30-90 days: 50% weight
  • 90+ days: 25% weight

Timing Boost

grooveASSIGN analyzes historical activity patterns to prefer reviewers who are likely available now:

Availability Score Adjustment
Active this hour +30%
Active next hour +20%
Active in 2 hours +10%
Not active in 3+ hours -25%

This reduces review latency by assigning reviewers in their working hours, not while they're asleep.

Pricing

Plan Price Features
Free $0/forever Public repos, all features
Team $1/user/month Private repos

Get Team →

Documentation

Questions? honk@codegroove.dev