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JetBrains/kotlinGitHub

https://github.com/JetBrains/kotlin
Stars:
52.7k
Default branch:
master
Last scored:
8h ago
Overall

Strengths

  • CONTRIBUTING guide
  • License file
  • README
  • Test suite

Gaps

  • .aider.conf.yml
  • CI configuration
  • Cursor rules (.cursor/rules)
  • Dependency manifest
  • Reproducible dev env

Suggestions to improve for a specific model

  1. 1
    Linter / formatter config
    Configure a linter/formatter (ESLint+Prettier, Biome, Ruff, rustfmt+clippy, golangci-lint) and commit the config.
    +13.5 pts
  2. 2
    .aider.conf.yml
    Add a `.aider.conf.yml` at the repo root pinning Aider's `test-cmd` and `lint-cmd` so it auto-runs them after edits.
    +10.8 pts
  3. 3
    Dependency manifest
    Commit a proper manifest (package.json, pyproject.toml, Cargo.toml, go.mod, etc.) plus a lockfile.
    +9.5 pts

Per-model scores

Claude Code
Loads CLAUDE.md at the start of every conversation per Anthropic's memory docs, so AGENTS.md / CLAUDE.md and a fast test loop carry the most weight.
43.4
Cursor
Per Cursor's Rules docs, reads `.cursor/rules/*.mdc` and AGENTS.md as the canonical repo-side input. Type config and a clean README still aid the codebase index but aren't the docs-cited signal.
36.4
Devin
Operates from a sandboxed Ubuntu VM and runs an 8-step machine setup (deps, secrets, language versions, lint/test commands) per Cognition's repo-setup docs. CI config files alone aren't what the docs ask for — a runnable dev environment is.
39.0
GPT-5 Codex
Reads AGENTS.md before doing any work per OpenAI's Codex docs — the strictest AGENTS.md adherent of any agent here. Hierarchical (per-directory) AGENTS.md and AGENTS.override.md are first-class.
41.6
Gemini CLI
Reads hierarchical `GEMINI.md` (global → workspace → component-level) at every prompt per Gemini CLI's docs. The long-context advantage favors repos that split context per directory rather than docs-heavy in general.
35.9
Aider
Auto-lints on every edit by default; runs the configured test command after edits when `--test-cmd` is set (per Aider's lint/test docs). A green linter and a declared test command translate directly into successful commits.
38.1
OpenHands
Runs in a sandboxed container and executes `.openhands/setup.sh` at session start per OpenHands' repo-customization docs. Root AGENTS.md is now the preferred always-on instruction surface (microagents are deprecated in favor of it).
33.7
Pi
Minimal terminal coding harness. Loads `AGENTS.md` (or `CLAUDE.md`) at startup — global, parent dirs, then cwd — per the Pi coding-agent README. Sandboxing is deferred to user-installed extensions.
42.3

Alternatives

Same-language repos scored for Aider. Heuristic v1 (same language + same host); cross-language matches are refined in v0.6.0.

Signal breakdown

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· 0% pass
No CI config found
CONTRIBUTING guide· 100% pass
Guide present
docs/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
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· 0% pass
No type config found

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