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 5 of 12 for GPT-5 Codex
RankRepoStarsScoreExternal link
129ml-explore/mlxGitHub28.7k ★
80.0
open
130guzzle/guzzleGitHub23.4k ★
80.0
open
131MaterializeInc/materializeGitHub6.4k ★
80.0
open
132hsnice16/tulaGitHub0 ★
79.7
open
133helix-editor/helixGitHub46.6k ★
79.3
open
134qdrant/qdrantGitHub35.1k ★
79.3
open
135Kludex/starletteGitHub12.7k ★
79.3
open
136apache/pinotGitHub6.2k ★
79.3
open
137huggingface/diffusersGitHub34.7k ★
79.2
open
138pmndrs/zustandGitHub58.8k ★
78.9
open
139pandas-dev/pandasGitHub50k ★
78.8
open
140ReactiveX/RxJavaGitHub48.3k ★
78.5
open
141ReactiveX/RxSwiftGitHub24.6k ★
78.5
open
142jestjs/jestGitHub45.6k ★
78.4
open
143simstudioai/simGitHub29.8k ★
78.4
open
144vercel-labs/deepsecGitHub8.1k ★
78.4
open
145eslint/eslintGitHub27.6k ★
78.3
open
146minio/minioGitHub61.3k ★
78.1
open
147nestjs/nestGitHub76.8k ★
77.7
open
148continuedev/continueGitHub36.2k ★
77.7
open
149TheOrcDev/8bitcn-uiGitHub2k ★
77.6
open
150open-webui/open-webuiGitHub155k ★
77.3
open
151gohugoio/hugoGitHub90.1k ★
77.3
open
152junegunn/fzfGitHub83.6k ★
77.3
open
153python-poetry/poetryGitHub34.3k ★
77.3
open
154huggingface/transformersGitHub167.6k ★
77.2
open
155duckdb/duckdbGitHub42.1k ★
77.2
open
156supermemoryai/supermemoryGitHub31.2k ★
77.1
open
157gin-gonic/ginGitHub89.3k ★
76.7
open
158run-llama/llama_indexGitHub52.5k ★
76.7
open
159spf13/cobraGitHub44.7k ★
76.7
open
160uber-go/zapGitHub24.7k ★
76.7
open

Tracking 371 repos · last updated