Agent Friendly Code

elastic/elasticsearch

GitHub
https://github.com/elastic/elasticsearch

Free and Open Source, Distributed, RESTful Search Engine

  • elasticsearch
  • java
  • search-engine
Stars:
78.5k
Language:
Java
Default branch:
main
Last scored:
Overall

At a glance

Rank
#286 of 401
#18 of 28 Java repos
Checks passed
7 of 17
Full list below
Best set up for
Claude Code
Score 68.8
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
    README
    Expand your README to cover what the project does, how to install, the common commands, and the high-level layout.
    +9.2 pts
  2. 2
    Linter / formatter config
    Configure a linter/formatter (ESLint+Prettier, Biome, Ruff, rustfmt+clippy, golangci-lint) and commit the config.
    +7.9 pts
  3. 3
    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

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
#244 of 401
68.8
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ~Reproducible dev env
Kimi Code CLI
#253 of 401
64.9
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✓Dependency manifest
Codex
#279 of 401
64.4
  • ✓AGENTS.md / CLAUDE.md
  • ✗README
  • ✓Test suite
Devin
#273 of 401
62.1
  • ~Reproducible dev env
  • ✓Dependency manifest
  • ✓Test suite
Pi
#275 of 401
61.6
  • ✓AGENTS.md / CLAUDE.md
  • ✓Test suite
  • ✗Linter / formatter config
OpenHands
#288 of 401
58.4
  • ✓CI configuration
  • ✓Dependency manifest
  • ~Reproducible dev env
Gemini CLI
#298 of 401
56.4
  • ✗GEMINI.md
  • ✗README
  • ✓Test suite
Cursor
#308 of 401
54.4
  • ✗Cursor rules (.cursor/rules)
  • ✗README
  • ✓Type configuration
Aider
#324 of 401
52.5
  • ✗.aider.conf.yml
  • ✗Linter / formatter config
  • ✓Test suite

Does elastic/elasticsearch 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) · 17,085 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 · 7 passed

Skills (.agents/skills)· 0% pass
No .agents/skills/<name>/SKILL.md
AGENTS.md / CLAUDE.md· 100% pass
Substantive (17,085 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
11 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.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
10000+ files — very large
Test suite· 100% pass
Found /test
test
Type configuration· 100% pass
Typed language (Java/Kotlin)

How elastic/elasticsearch compares

vs leaderboard average
6.4 pts below
Average 66.8
vs Java average
0.8 pts below
Average 61.2
Stars among Java repos
#2 of 28

Missing here, and how many repos have it

  • README · passed by 96% of leaderboard repos, 89% of Java repos
  • 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

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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Check the score on every pull request

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