Agent Friendly Code

scala/scala3

GitHub
https://github.com/scala/scala3

The Scala 3 compiler, also known as Dotty.

Stars:
6.3k
Language:
Scala
Default branch:
main
Last scored:
Overall

At a glance

Rank
#144 of 401
Top 36% · #4 of 6 Scala repos
Checks passed
9 of 16
Full list below
Best set up for
Pi
Score 80.3
Needs most work for
OpenHands
Biggest fix: Reproducible dev env (+10.4 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
    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; the agent's name links to its leaderboard. How each agent is scored →

Pi
#124 of 401
80.3
  • AGENTS.md / CLAUDE.md
  • Test suite
  • Linter / formatter config
GPT-5 Codex
#135 of 401
80.0
  • AGENTS.md / CLAUDE.md
  • README
  • Test suite
Kimi CLI
#133 of 401
80.0
  • AGENTS.md / CLAUDE.md
  • Test suite
  • Dependency manifest
Claude Code
#148 of 401
77.6
  • AGENTS.md / CLAUDE.md
  • Test suite
  • Reproducible dev env
Cursor
#112 of 401
74.5
  • Cursor rules (.cursor/rules)
  • README
  • Type configuration
Devin
#200 of 401
74.3
  • Reproducible dev env
  • Dependency manifest
  • Test suite
Gemini CLI
#139 of 401
71.6
  • GEMINI.md
  • README
  • Test suite
Aider
#154 of 401
70.1
  • .aider.conf.yml
  • Linter / formatter config
  • Test suite
OpenHands
#216 of 401
67.1
  • CI configuration
  • Dependency manifest
  • Reproducible dev env

Does scala/scala3 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) · 3,469 characters
Agent-specific files
None: no GEMINI.md, .cursor/rules, .openhands/setup.sh or .aider.conf.yml
Repos that have one
3 of 6 Scala repos · 214 of 401 repos on the leaderboard · See examples →

All 16 checks · 9 passed

AGENTS.md / CLAUDE.md· 100% pass
Substantive (3,469 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
27 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.sbt
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· 100% pass
Config detected
.scalafmt.conf
.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 (1,287 characters)
README.md
Manageable size· 20% pass
10001+ files — very large
Test suite· 100% pass
Found /tests
tests
Type configuration· 100% pass
Typed language (Scala)

How scala/scala3 compares

vs leaderboard average
6.2 pts above
Average 68.9
vs Scala average
6.2 pts above
Average 68.9
Stars among Scala repos
#5 of 6

Missing here, and how many repos have it

  • Pre-commit / git hooks · passed by 29% of leaderboard repos, 17% of Scala repos
  • Reproducible dev env · passed by 21% of leaderboard repos, 17% of Scala repos

One fix for the most agents: Reproducible dev env would raise the score for all 9 agents, by up to 13.0 points.

Similar repos

Same language and host first, then the repos closest in overall score.

All Scala repos →

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Agent friendly score for github/scala/scala3
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Check the score on every pull request

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