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JetBrains/kotlinGitHub

https://github.com/JetBrains/kotlin
Stars:
53.5k
Language:
Kotlin
Default branch:
master
Last scored:
6h ago
Overall

At a glance

Rank
#181 of 371
Top 49% · #1 of 3 Kotlin repos
Checks passed
7 of 16
Full list below
Best set up for
GPT-5 Codex
Score 76.1
Needs most work for
Aider
Biggest fix: .aider.conf.yml (+14.1 pts)

What it has

  • CI configuration
  • CONTRIBUTING guide
  • Dependency manifest
  • License file
  • README

What it's missing

  • .aider.conf.yml
  • Cursor rules (.cursor/rules)
  • GEMINI.md
  • Linter / formatter config
  • .openhands/setup.sh

What to fix first

  1. 1
    Linter / formatter config
    Configure a linter/formatter (ESLint+Prettier, Biome, Ruff, rustfmt+clippy, golangci-lint) and commit the config.
    +7.9 pts
  2. 2
    Pre-commit / git hooks
    Set up pre-commit (.pre-commit-config.yaml), husky, or lefthook to run format+lint on every commit.
    +5.3 pts
  3. 3
    Manageable size
    If possible, split into smaller modules or carve out a focused entry path. Document where to start in AGENTS.md.
    +5.3 pts

Score for each AI agent

Each agent looks for different things in a repo, based on its own docs. Under each score are the three checks it cares about most.

GPT-5 Codex
76.1
Kimi CLI
75.6
Claude Code
75.4
Devin
75.3
Pi
72.1
Gemini CLI
67.6
Cursor
67.1
OpenHands
67.1
Aider
60.1

Similar repos

Scored for Claude Code. Same language and host as this repo, scoring near it.

All checks

AGENTS.md / CLAUDE.md· 80% pass
File exists (234 chars)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
1 GitHub Actions workflow(s)
.github/workflows
CONTRIBUTING guide· 100% pass
Guide present
docs/contributing.md
Cursor rules (.cursor/rules)· 0% pass
No .cursor/rules/*.mdc or .cursorrules
Dependency manifest· 100% pass
Manifest present
build.gradle.kts
Reproducible dev env· 70% pass
Has gradlew
gradlew
GEMINI.md· 0% pass
No GEMINI.md at repo root
License file· 100% pass
License present
license
Linter / formatter config· 0% pass
No linter/formatter config found
.openhands/setup.sh· 0% pass
No .openhands/setup.sh
Pre-commit / git hooks· 0% pass
No pre-commit / husky / lefthook found
README· 100% pass
README detailed (9437 chars)
ReadMe.md
Manageable size· 20% pass
10001+ files — very large
Test suite· 100% pass
Found /tests
tests
Type configuration· 100% pass
Typed language (Java/Kotlin)

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Agent friendly score for github/JetBrains/kotlin
[![Agent Friendly](https://agentfriendlycode.com/api/badge/github/JetBrains/kotlin.svg)](https://agentfriendlycode.com/repo/github/JetBrains/kotlin)

Check the score on every pull request

Add this file to your repo. On each pull request, it posts one comment showing how the score changed and why. It runs in your own CI, with no outside server involved.

# .github/workflows/agent-friendly.yml
name: Agent-friendly score diff

on:
  pull_request:
    branches: [master]

permissions:
  contents: read
  pull-requests: write

jobs:
  score-diff:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
        with:
          fetch-depth: 0
      - uses: hsnice16/agent-friendly-action@v0
        with:
          agents-badge-token: ${{ secrets.AGENTS_BADGE_TOKEN }}

Add AGENTS_BADGE_TOKENto the repo's secrets to turn the comment on. Without it, the action does nothing. Where do I add it?