Agent Friendly Code

delta-io/delta

GitHub
https://github.com/delta-io/delta

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs

Stars:
9.1k
Language:
Scala
Default branch:
master
Last scored:
Overall

At a glance

Rank
#53 of 401
Top 13% · #1 of 6 Scala repos
Checks passed
9 of 17
Full list below
Best set up for
Claude Code
Score 89.5
Needs most work for
OpenHands
Biggest fix: .openhands/setup.sh (+10.0 pts)

What it has

What it's missing

What to fix first

Pick an AI agent

Showing fixes for Claude Code

  1. 1
    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
  2. 2
    Test suite
    Add a tests/ (or test/, __tests__/, spec/) directory with runnable tests. Document how to run them in AGENTS.md.
    +3.9 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.
    +1.3 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
#48 of 401
89.5
  • ✓AGENTS.md / CLAUDE.md
  • ~Test suite
  • ✓Reproducible dev env
Codex
#55 of 401
85.6
  • ✓AGENTS.md / CLAUDE.md
  • ✓README
  • ~Test suite
Kimi Code CLI
#64 of 401
84.7
  • ✓AGENTS.md / CLAUDE.md
  • ~Test suite
  • ✓Dependency manifest
Pi
#59 of 401
84.4
  • ✓AGENTS.md / CLAUDE.md
  • ~Test suite
  • ✓Linter / formatter config
Devin
#62 of 401
81.1
  • ✓Reproducible dev env
  • ✓Dependency manifest
  • ~Test suite
Cursor
#63 of 401
77.1
  • ✗Cursor rules (.cursor/rules)
  • ✓README
  • ✓Type configuration
Gemini CLI
#57 of 401
76.4
  • ✗GEMINI.md
  • ✓README
  • ~Test suite
Aider
#62 of 401
76.3
  • ✗.aider.conf.yml
  • ✓Linter / formatter config
  • ~Test suite
OpenHands
#64 of 401
75.9
  • ✓CI configuration
  • ✓Dependency manifest
  • ✓Reproducible dev env

Does delta-io/delta 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) · 3,402 characters
Agent-specific files
None: no GEMINI.md, .cursor/rules, .openhands/setup.sh, .aider.conf.yml or .agents/skills
Repos that have one
3 of 6 Scala repos · 221 of 401 repos on the leaderboard · See examples →

All 17 checks · 9 passed

Skills (.agents/skills)· 0% pass
No .agents/skills/<name>/SKILL.md
AGENTS.md / CLAUDE.md· 100% pass
Substantive (3,402 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
13 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· 100% pass
2 env artifacts (.devcontainer/devcontainer.json, Dockerfile)
.devcontainer/devcontainer.json
GEMINI.md· 0% pass
No GEMINI.md at repo root
License file· 100% pass
License present
LICENSE.txt
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 (11,345 characters)
README.md
Manageable size· 80% pass
1832 files
Test suite· 70% pass
Test files detected (project/tests/test_published_artifacts.py)
project/tests/test_published_artifacts.py
Type configuration· 100% pass
Typed language (Scala)

How delta-io/delta compares

vs leaderboard average
14.4 pts above
Average 66.8
vs Scala average
15.2 pts above
Average 66.0
Stars among Scala repos
#3 of 6

Missing here, and how many repos have it

  • Pre-commit / git hooks · passed by 29% of leaderboard repos, 17% of Scala repos
  • Skills (.agents/skills) · passed by 17% of leaderboard repos, 0% of Scala repos
  • Cursor rules (.cursor/rules) · passed by 4% of leaderboard repos, 0% of Scala repos

Passes checks most repos miss

  • Reproducible dev env · only 22% of repos pass it

One fix for the most agents: Pre-commit / git hooks would raise the score for all 9 agents, by up to 6.0 points.

Similar repos

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

All Scala repos →

Same topics, any language

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

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