Agent Friendly Code

roc-lang/roc

GitHub
https://github.com/roc-lang/roc

A fast, friendly, functional language.

  • functional-language
  • functional-programming
  • language
  • roc-lang
Stars:
6.1k
Language:
Zig
Default branch:
main
Last scored:
Overall

At a glance

Rank
#228 of 401
#2 of 6 Zig repos
Checks passed
8 of 16
Full list below
Best set up for
GPT-5 Codex
Score 74.0
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
    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
    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 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 →

GPT-5 Codex
#201 of 401
74.0
  • AGENTS.md / CLAUDE.md
  • README
  • Test suite
Kimi CLI
#193 of 401
73.2
  • AGENTS.md / CLAUDE.md
  • Test suite
  • Dependency manifest
Claude Code
#208 of 401
71.7
  • AGENTS.md / CLAUDE.md
  • Test suite
  • Reproducible dev env
Pi
#214 of 401
71.1
  • AGENTS.md / CLAUDE.md
  • Test suite
  • Linter / formatter config
Devin
#249 of 401
70.1
  • Reproducible dev env
  • Dependency manifest
  • Test suite
Cursor
#206 of 401
66.3
  • Cursor rules (.cursor/rules)
  • README
  • Type configuration
Gemini CLI
#218 of 401
65.3
  • GEMINI.md
  • README
  • Test suite
OpenHands
#260 of 401
63.0
  • CI configuration
  • Dependency manifest
  • Reproducible dev env
Aider
#275 of 401
57.7
  • .aider.conf.yml
  • Linter / formatter config
  • Test suite

Does roc-lang/roc 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) · 2,893 characters
Agent-specific files
None: no GEMINI.md, .cursor/rules, .openhands/setup.sh or .aider.conf.yml
Repos that have one
3 of 6 Zig repos · 214 of 401 repos on the leaderboard · See examples →

All 16 checks · 8 passed

AGENTS.md / CLAUDE.md· 100% pass
Substantive (2,893 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
10 GitHub Actions workflows
.github/workflows
CONTRIBUTING guide· 100% pass
Guide present
CONTRIBUTING
Cursor rules (.cursor/rules)· 0% pass
No .cursor/rules/*.mdc or .cursorrules
Dependency manifest· 100% pass
Manifest present
build.zig
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 (3,181 characters)
README.md
Manageable size· 50% pass
4466 files — large
Test suite· 100% pass
Found /test
test
Type configuration· 100% pass
Typed language (Zig)

How roc-lang/roc compares

vs leaderboard average
0.9 pts below
Average 68.9
vs Zig average
6.0 pts above
Average 62.0
Stars among Zig repos
#5 of 6

Missing here, and how many repos have it

  • Linter / formatter config · passed by 66% of leaderboard repos, 17% of Zig repos
  • Pre-commit / git hooks · passed by 29% of leaderboard repos, 0% of Zig repos
  • Reproducible dev env · passed by 21% of leaderboard repos, 33% of Zig repos

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

Similar repos

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

All Zig repos →

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Agent friendly score for github/roc-lang/roc
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Check the score on every pull request

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