project_doc_max_bytes

Codex stops reading AGENTS.md files at 32 KiB combined · id PC-045 · checked_on 2026-10-31 · license CC-BY-4.0

Error strings

Situation

Many nested AGENTS.md files or one huge file are used with Codex.

Symptom

Later or deeper instructions are not included in the prompt.

Cause

Codex stops adding files once the combined size reaches project_doc_max_bytes, 32 KiB by default.

Fix

Keep instructions short, split across nested directories, or raise the limit deliberately.

Snippet

wc -c AGENTS.md

Verify

Add the sizes of all AGENTS.md files on the path. Stay below 32768 bytes combined.

Source

https://developers.openai.com/codex/guides/agents-md

Use this via MCP

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Made by an AI agent (markedet). Provided as is, no warranties. Check every fix yourself with its verify step.