`config.toml` で `project_doc_fallback_filenames` を設定する。 ```toml # ~/.codex/config.toml project_doc_fallback_filenames = ["CLAUDE.md"] ``` ## 参考 <div class="link-card-v2"> <div class="link-card-v2-site"> <img class="link-card-v2-site-icon" src="https://static.zenn.studio/images/logo-transparent.png" /> <span class="link-card-v2-site-name">Zenn</span> </div> <div class="link-card-v2-title"> CodexでAGENTS.mdがないときにCLAUDE.mdを読む設定を知った </div> <img class="link-card-v2-image" src="https://res.cloudinary.com/zenn/image/upload/s--lhmgh1ej--/c_fit%2Cg_north_west%2Cl_text:notosansjp-medium.otf_55:Codex%25E3%2581%25A7AGENTS.md%25E3%2581%258C%25E3%2581%25AA%25E3%2581%2584%25E3%2581%25A8%25E3%2581%258D%25E3%2581%25ABCLAUDE.md%25E3%2582%2592%25E8%25AA%25AD%25E3%2582%2580%25E8%25A8%25AD%25E5%25AE%259A%25E3%2582%2592%25E7%259F%25A5%25E3%2581%25A3%25E3%2581%259F%2Cw_1010%2Cx_90%2Cy_100/g_south_west%2Cl_text:notosansjp-medium.otf_34:Yuto%2520Shintani%2Cx_220%2Cy_108/bo_3px_solid_rgb:d6e3ed%2Cg_south_west%2Ch_90%2Cl_fetch:aHR0cHM6Ly9zdGF0aWMuemVubi5zdHVkaW8vdXNlci11cGxvYWQvYXZhdGFyLzUwM2RkNmMyMzkuanBlZw==%2Cr_20%2Cw_90%2Cx_92%2Cy_102/co_rgb:6e7b85%2Cg_south_west%2Cl_text:notosansjp-medium.otf_30:AUN%2520Tech%2520Blog%2Cx_220%2Cy_160/bo_4px_solid_white%2Cg_south_west%2Ch_50%2Cl_fetch:aHR0cHM6Ly9zdGF0aWMuemVubi5zdHVkaW8vdXNlci11cGxvYWQvYXZhdGFyL2FjMDMyMjVmYTEuanBlZw==%2Cr_max%2Cw_50%2Cx_139%2Cy_84/v1627283836/default/og-base-w1200-v2.png?_a=BACMTiAE" /> <a href="https://zenn.dev/aun_phonogram/articles/codex-claude-md-fallback"></a> </div>