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 6 of 12 for GPT-5 Codex
RankRepoStarsScoreExternal link
161PowerShell/PowerShellGitHub55.7k ★
76.5
open
162preactjs/preactGitHub38.9k ★
76.3
open
163vercel/swrGitHub32.5k ★
76.3
open
164JetBrains/kotlinGitHub53.5k ★
76.1
open
165pola-rs/polarsGitHub40.1k ★
76.1
open
166rust-lang/rustGitHub119.8k ★
76.0
open
167statelyai/xstateGitHub30.3k ★
76.0
open
168scylladb/scylladbGitHub15.8k ★
76.0
open
169sharkdp/fdGitHub44.8k ★
75.9
open
170huggingface/datasetsGitHub22.1k ★
75.9
open
171solidjs/solidGitHub36.1k ★
75.7
open
172refinedev/refineGitHub35.9k ★
75.7
open
173Uniswap/interfaceGitHub5.5k ★
75.7
open
174rustdesk/rustdeskGitHub125.6k ★
75.3
open
175supabase/supabaseGitHub111.4k ★
75.3
open
176plausible/analyticsGitHub29.4k ★
75.3
open
177apache/druidGitHub14.1k ★
75.3
open
178sindresorhus/kyGitHub17.1k ★
75.2
open
179AutoMQ/automqGitHub10.9k ★
75.2
open
180lit/litGitHub21.8k ★
74.9
open
181microsoft/vscodeGitHub193.6k ★
74.8
open
182Comfy-Org/ComfyUIGitHub137.2k ★
74.7
open
183sharkdp/batGitHub60.8k ★
74.5
open
184nlohmann/jsonGitHub50.8k ★
74.5
open
185SigNoz/signozGitHub32.3k ★
74.5
open
186vuejs/coreGitHub54.6k ★
74.4
open
187chenglou/pretextGitHub50.8k ★
74.4
open
188trpc/trpcGitHub40.7k ★
74.4
open
189TanStack/aiGitHub3.2k ★
74.4
open
190hashicorp/vaultGitHub36.4k ★
74.1
open
191TanStack/queryGitHub50.4k ★
74.0
open
192prettier/prettierGitHub52.4k ★
73.6
open

Tracking 371 repos · last updated