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Claude Code and Codex differ in monorepo agent file handling

By PulseAugur Editorial · [1 sources] ·

This article compares how Claude Code and Codex handle agent configuration files within monorepos. Codex starts at the project root and walks downwards, prioritizing files closer to the working directory, and can be influenced by AGENTS.override.md. Claude Code, conversely, walks upwards from the working directory, reading CLAUDE.md or AGENTS.md files in parent folders, with a preference for CLAUDE.md files which can override AGENTS.md. The article highlights scenarios where AGENTS.md might appear ignored due to these differing behaviors, referencing common issues seen on platforms like Stack Overflow. AI

IMPACT Clarifies how different AI coding assistants interpret configuration files, impacting developer workflows in complex project structures.

RANK_REASON Article discusses specific configuration file handling for two AI coding tools, Claude Code and Codex, within a monorepo context.

Read on dev.to — Claude Code tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Claude Code and Codex differ in monorepo agent file handling

How we ranked this

Signal score
2 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
Article discusses specific configuration file handling for two AI coding tools, Claude Code and Codex, within a monorepo context.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Same-day
Cluster formed today. Ranking reflects the current source set at time of score.

Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — Claude Code tag TIER_1 English(EN) · Iliya Oblakov ·

    AGENTS.md ignored in a monorepo? Claude Code and Codex walk the tree in opposite directions

    <p>Start Codex at the root of a monorepo and the <code>AGENTS.md</code> in your package stays out of that run. Leave a <code>CLAUDE.md</code> in any folder above your working directory and Claude Code, under its default setting, reads that file instead of <code>AGENTS.md</code>. …

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