Agent Friendly Code

Which public repos are easiest for GPT-5 Codex to work in?

Repos from GitHub, GitLab, and Bitbucket, ranked by their GPT-5 Codex score rather than the average across every agent. gitlab-org/cli leads with 97.7.

The methodology lists the weight GPT-5 Codex gives each check and the documentation it comes from.

GPT-5 Codex — Reads AGENTS.md before doing any work per OpenAI's Codex docs. Hierarchical (per-directory) AGENTS.md and AGENTS.override.md are first-class.
Leaderboard — page 3 of 12 for GPT-5 Codex
RankRepoStarsScoreExternal link
65meilisearch/meilisearchGitHub59.6k ★
87.3
open
66google/osv-scannerGitHub11.2k ★
87.3
open
67openclaw/openclawGitHub391.8k ★
86.7
open
68Textualize/richGitHub57.5k ★
86.7
open
69sqlalchemy/sqlalchemyGitHub12.2k ★
86.7
open
70github/spec-kitGitHub141k ★
86.5
open
71astral-sh/uvGitHub90.7k ★
86.5
open
72hiyouga/LlamaFactoryGitHub75.4k ★
86.5
open
73sveltejs/kitGitHub20.8k ★
86.4
open
74neovim/neovimGitHub103k ★
86.1
open
75caddyserver/caddyGitHub77.9k ★
86.1
open
76scikit-learn/scikit-learnGitHub67.6k ★
86.1
open
77oxc-project/oxcGitHub23k ★
86.1
open
78mui/material-uiGitHub99.2k ★
85.6
open
79MoonshotAI/kimi-codeGitHub7.8k ★
85.5
open
80vllm-project/vllmGitHub93.7k ★
85.3
open
81calcom/cal.diyGitHub49k ★
85.3
open
82pallets/flaskGitHub75k ★
85.2
open
83ollama/ollamaGitHub182.9k ★
84.9
open
84mermaid-js/mermaidGitHub90.6k ★
84.7
open
85colinhacks/zodGitHub44.1k ★
84.7
open
86novuhq/novuGitHub40.1k ★
84.7
open
87gitlab-org/gitlabGitLab6.2k ★
84.4
open
88Shopify/cliGitHub753 ★
84.4
open
89gitlab-org/gitalyGitLab437 ★
84.4
open
90zed-industries/zedGitHub91.6k ★
84.1
open
91vapor/vaporGitHub26.2k ★
84.0
open
92anomalyco/opencodeGitHub213k ★
83.9
open
93pydantic/pydanticGitHub29k ★
83.9
open
94celery/celeryGitHub29k ★
83.5
open
95withastro/astroGitHub63.2k ★
83.3
open
96labstack/echoGitHub32.8k ★
83.3
open

Tracking 371 repos · last updated