Agent Friendly Code

apache/kafka

GitHub
https://github.com/apache/kafka

Apache Kafka - A distributed event streaming platform

Stars:
34.1k
Language:
Java
Default branch:
trunk
Last scored:
Overall

At a glance

Rank
#132 of 401
Top 33% · #2 of 28 Java repos
Checks passed
8 of 17
Full list below
Best set up for
Claude Code
Score 82.0
Needs most work for
Aider
Biggest fix: .aider.conf.yml (+14.1 pts)

What it has

What it's missing

What to fix first

Pick an AI agent

Showing fixes for Claude Code

  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
    Reproducible dev env
    Add a Makefile or devcontainer or Dockerfile so the agent can set up the project in one command.
    +3.6 pts

Score for each AI agent

Each agent weighs the checks by its own docs. Under each score are its top three. How each agent is scored →

Claude Code
#103 of 401
82.0
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ~Reproducible dev env
Codex
#119 of 401
78.4
  • ✓AGENTS.md / CLAUDE.md
  • ✓README
  • ✓Test suite
Kimi Code CLI
#122 of 401
77.5
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✓Dependency manifest
Pi
#137 of 401
74.9
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✗Linter / formatter config
Devin
#122 of 401
74.8
  • ~Reproducible dev env
  • ✓Dependency manifest
  • ✓Test suite
OpenHands
#136 of 401
69.6
  • ✓CI configuration
  • ✓Dependency manifest
  • ~Reproducible dev env
Gemini CLI
#132 of 401
69.5
  • ✗GEMINI.md
  • ✓README
  • ✓Test suite
Cursor
#144 of 401
68.6
  • ✗Cursor rules (.cursor/rules)
  • ✓README
  • ✓Type configuration
Aider
#210 of 401
64.4
  • ✗.aider.conf.yml
  • ✗Linter / formatter config
  • ✓Test suite

Does apache/kafka have agent instructions?

An AGENTS.md (or CLAUDE.md) at the root tells AI coding agents how to build, test and work in the repo. A few agents also read a file of their own.

AGENTS.md / CLAUDE.md
AGENTS.md (new tab) · 9,997 characters
Agent-specific files
None: no GEMINI.md, .cursor/rules, .openhands/setup.sh, .aider.conf.yml or .agents/skills
Repos that have one
19 of 28 Java repos · 221 of 401 repos on the leaderboard · See examples →

All 17 checks · 8 passed

Skills (.agents/skills)· 0% pass
No .agents/skills/<name>/SKILL.md
AGENTS.md / CLAUDE.md· 100% pass
Substantive (9,997 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
20 GitHub Actions workflows
.github/workflows
CONTRIBUTING guide· 100% pass
Guide present
CONTRIBUTING.md
Cursor rules (.cursor/rules)· 0% pass
No .cursor/rules/*.mdc or .cursorrules
Dependency manifest· 100% pass
Manifest present
build.gradle
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 (14,712 characters)
README.md
Manageable size· 80% pass
1969 files
Test suite· 100% pass
Found /tests
tests
Type configuration· 100% pass
Typed language (Java/Kotlin)

How apache/kafka compares

vs leaderboard average
6.5 pts above
Average 66.8
vs Java average
12.1 pts above
Average 61.2
Stars among Java repos
#8 of 28

Missing here, and how many repos have it

  • Linter / formatter config · passed by 65% of leaderboard repos, 21% of Java repos
  • Pre-commit / git hooks · passed by 29% of leaderboard repos, 4% of Java repos
  • Skills (.agents/skills) · passed by 17% of leaderboard repos, 4% of Java repos

One fix for the most agents: Linter / formatter config would raise the score for all 9 agents, by up to 14.1 points.

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