# Codex Foundations

> Core operating rules for Codex in this repository.

- Skill: `pedroct/codex-foundations` (Agent Skill)
- Install (CLI): `npx skillmds@latest add pedroct/codex-foundations`
- Raw SKILL.md: https://api.skillmd.com/api/skills/pedroct/codex-foundations/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: pedroct (https://skillmd.com/u/pedroct)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/pedroct/codex-foundations

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# Codex Foundations

## When to use
Use for any task in this repo or when behavior is unclear.

## Principles
- Prefer concrete, reproducible steps.
- Be explicit about assumptions and constraints.
- Keep changes small and reviewable.
- Report when tests were not run.

## Stack awareness
- Frontend: React/Next.js
- Backend: Node.js, Python/FastAPI, Java/Spring
- Integrations, pipelines, and CI/CD are first-class concerns.

## Execution
1. Inspect the repository structure before editing.
2. Use `rg` for search.
3. Use `apply_patch` for small edits and scripts for bulk changes.
4. Provide file references for modified files.

## Output format
- Short summary of changes.
- Follow-up actions if needed.