Agent Friendly Code
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postgres/postgresGitHub

https://github.com/postgres/postgres
Stars:
20.8k
Default branch:
master
Last scored:
1d ago
Overall

Strengths

  • CONTRIBUTING guide
  • Dependency manifest
  • Reproducible dev env
  • Test suite

Gaps

  • AGENTS.md / CLAUDE.md
  • .aider.conf.yml
  • CI configuration
  • Cursor rules (.cursor/rules)
  • GEMINI.md

Suggestions to improve for a specific model

  1. 1
    AGENTS.md / CLAUDE.md
    Add an AGENTS.md covering project goals, layout, setup commands, and conventions. Aim for 800+ chars of real guidance (not boilerplate).
    +14.1 pts
  2. 2
    Linter / formatter config
    Configure a linter/formatter (ESLint+Prettier, Biome, Ruff, rustfmt+clippy, golangci-lint) and commit the config.
    +11.3 pts
  3. 3
    Type configuration
    Add a type config (tsconfig.json for JS/TS, mypy.ini or pyrightconfig.json for Python). Rust/Go/JVM/Scala/Swift/C#/OCaml/Haskell/Zig are typed by default.
    +8.5 pts

Per-model scores

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.
50.8
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.
47.2
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).
44.1
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.
43.5
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.
43.5
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.
40.5
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.
40.1
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.
37.1

Alternatives

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

Signal breakdown

AGENTS.md / CLAUDE.md· 0% pass
No agent instructions file found
.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
.github/CONTRIBUTING.md
Cursor rules (.cursor/rules)· 0% pass
No .cursor/rules/*.mdc or .cursorrules
Dependency manifest· 100% pass
Manifest present
meson.build
Reproducible dev env· 100% pass
2 env artifacts (Makefile, makefile)
Makefile
GEMINI.md· 0% pass
No GEMINI.md at repo root
License file· 0% pass
No LICENSE/COPYING file
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· 70% pass
README present (988 chars)
README.md
Manageable size· 20% pass
7447+ files — very large
Test suite· 100% pass
Found /src/test
src/test
Type configuration· 0% pass
No type config found

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Drop the snippet below into the top of this repo's README so visitors can see its agent-friendliness at a glance — clicks land back here.

Agent friendly score for github/postgres/postgres
[![Agent Friendly](https://agentfriendlycode.com/api/badge/github/postgres/postgres.svg)](https://agentfriendlycode.com/repo/1572)

Catch score regressions on every PR

Drop the workflow below into your repo and the action will post (or edit) a single comment on each PR with the score delta and the per-signal changes — runs entirely inside your CI, no third-party server in the loop.

# .github/workflows/agent-friendly.yml
name: Agent-friendly score diff

on:
  pull_request:
    branches: [main]

permissions:
  contents: read
  pull-requests: write

jobs:
  score-diff:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: hsnice16/agent-friendly-action@v0
        with:
          agents-badge-token: ${{ secrets.AGENTS_BADGE_TOKEN }}

Set AGENTS_BADGE_TOKENin the repo's secrets to enable the comment; leave it unset and the action exits silently. Where do I add it?