Agent Friendly Code
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vercel/aiGitHub

https://github.com/vercel/ai
Stars:
23.9k
Default branch:
main
Last scored:
7h ago
Overall

Strengths

  • AGENTS.md / CLAUDE.md
  • CI configuration
  • CONTRIBUTING guide
  • Dependency manifest
  • License file

Gaps

  • .aider.conf.yml
  • Cursor rules (.cursor/rules)
  • GEMINI.md
  • Linter / formatter config
  • .openhands/setup.sh

Suggestions to improve for a specific model

  1. 1
    .openhands/setup.sh
    Add a `.openhands/setup.sh` that installs dependencies and prepares the project so OpenHands can run tests and lints out of the box.
    +10.4 pts
  2. 2
    README
    Expand your README to cover what the project does, how to install, the common commands, and the high-level layout.
    +7.3 pts
  3. 3
    Linter / formatter config
    Configure a linter/formatter (ESLint+Prettier, Biome, Ruff, rustfmt+clippy, golangci-lint) and commit the config.
    +6.2 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.
68.9
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.
57.5
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.
69.5
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.
69.1
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.
59.7
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.
56.5
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).
63.2
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.
66.1

Alternatives

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

Signal breakdown

AGENTS.md / CLAUDE.md· 100% pass
Substantive (12616 chars)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
14 GitHub Actions workflow(s)
.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
package.json
Reproducible dev env· 60% pass
package.json has 18 scripts
package.json
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· 100% pass
Hook framework configured
.husky
README· 0% pass
No README found
Manageable size· 20% pass
5397+ files — very large
Test suite· 70% pass
Test files detected (packages/ai/internal/index.test.ts)
packages/ai/internal/index.test.ts
Type configuration· 100% pass
Type config present
tsconfig.json

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