Agent Friendly Code

apache/cassandra

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

Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising performance.

Stars:
10.1k
Language:
Java
Default branch:
trunk
Last scored:
Overall

At a glance

Rank
#393 of 401
#28 of 28 Java repos
Checks passed
5 of 17
Full list below
Best set up for
Claude Code
Score 43.4
Needs most work for
Cursor
Biggest fix: Cursor rules (.cursor/rules) (+11.5 pts)

What it has

What it's missing

What to fix first

Pick an AI agent

Showing fixes for Claude Code

  1. 1
    Reproducible dev env
    Add a Makefile or devcontainer or Dockerfile so the agent can set up the project in one command.
    +11.8 pts
  2. 2
    Dependency manifest
    Commit a proper manifest (package.json, pyproject.toml, Cargo.toml, go.mod, etc.) plus a lockfile.
    +9.2 pts
  3. 3
    README
    Expand your README to cover what the project does, how to install, the common commands, and the high-level layout.
    +9.2 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
#388 of 401
43.4
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✗Reproducible dev env
Kimi Code CLI
#388 of 401
41.1
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✗Dependency manifest
Codex
#392 of 401
40.5
  • ✓AGENTS.md / CLAUDE.md
  • ✗README
  • ✓Test suite
Pi
#391 of 401
38.7
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✗Linter / formatter config
Devin
#393 of 401
37.1
  • ✗Reproducible dev env
  • ✗Dependency manifest
  • ✓Test suite
OpenHands
#393 of 401
36.4
  • ✓CI configuration
  • ✗Dependency manifest
  • ✗Reproducible dev env
Gemini CLI
#394 of 401
32.6
  • ✗GEMINI.md
  • ✗README
  • ✓Test suite
Aider
#395 of 401
30.7
  • ✗.aider.conf.yml
  • ✗Linter / formatter config
  • ✓Test suite
Cursor
#394 of 401
29.7
  • ✗Cursor rules (.cursor/rules)
  • ✗README
  • ✗Type configuration

Does apache/cassandra 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) · 4,413 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 · 5 passed

Skills (.agents/skills)· 0% pass
No .agents/skills/<name>/SKILL.md
AGENTS.md / CLAUDE.md· 100% pass
Substantive (4,413 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
3 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· 0% pass
No dependency manifest found
Reproducible dev env· 0% pass
No Makefile / devcontainer / Docker / equivalent found
GEMINI.md· 0% pass
No GEMINI.md at repo root
License file· 100% pass
License present
LICENSE.txt
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· 0% pass
No README found
Manageable size· 20% pass
8217 files — very large
Test suite· 100% pass
Found /test
test
Type configuration· 0% pass
No type config found

How apache/cassandra compares

vs leaderboard average
30.1 pts below
Average 66.8
vs Java average
24.5 pts below
Average 61.2
Stars among Java repos
#21 of 28

Missing here, and how many repos have it

  • README · passed by 96% of leaderboard repos, 89% of Java repos
  • Dependency manifest · passed by 92% of leaderboard repos, 89% of Java repos
  • Type configuration · passed by 68% of leaderboard repos, 89% 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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All Java repos →

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Repos tagged with the same GitHub topics, most shared first.

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

Check the score on every pull request

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