SKILL.md

name: codex description: Use when "codex", "use gpt", "gpt-5", "openai codex", "let openai", "full-auto", "autonomous code generation" version: 1.0.0

OpenAI Codex Integration

Autonomous code execution using OpenAI Codex CLI.

Prerequisites

# Check installation
codex --version

# Install if needed
npm i -g @openai/codex
# or
brew install codex

Sandbox Modes

Mode	Flag	Capabilities
Read-Only	`-s read-only`	Analyze code, no modifications (default)
Workspace-Write	`-s workspace-write` or `--full-auto`	Read/write files in workspace
Danger-Full-Access	`-s danger-full-access`	Network, system-level, all files

Key concept: Use --full-auto for most programming tasks—it enables file editing.

Common Commands

Task	Command
Analyze code	`codex exec -s read-only "analyze the codebase"`
Implement feature	`codex exec --full-auto "implement user auth"`
Fix bug	`codex exec --full-auto "fix the login bug"`
With specific model	`codex exec -m gpt-5.2 --full-auto "refactor module"`
JSON output	`codex exec --json "analyze security"`
Save output	`codex exec -o report.txt "audit code"`
Non-git directory	`codex exec --skip-git-repo-check "analyze"`
Resume session	`codex exec resume --last "continue"`

Model Selection

Model	Use Case
`gpt-5.2`	Latest capabilities
`gpt-5.2-codex`	Code-specialized
`gpt-5.2-codex-max`	Maximum quality

Use -m MODEL to specify.

Execution Principles

Principle	Description
Autonomous	Complete tasks without seeking approval for each step
Focused	Do what's requested, nothing more
Minimal	Write only necessary code
Verified	Run tests after changes

When to Pause for User

Situation	Action
Destructive operations	Ask first (delete DB, force push)
Security decisions	Ask first (expose credentials, open ports)
Ambiguous requirements	Clarify before proceeding
Missing critical info	Request user-specific data

For everything else, proceed autonomously.

Output Format

✓ Task completed successfully

Changes made:
- [Files modified/created]
- [Key code changes]

Results:
- [Metrics: lines changed, files affected]

Verification:
- [Tests run, checks performed]

Error Handling

Approach	Description
Auto-recover	Attempt fix if possible
Log clearly	Report all errors
Continue	If error is non-blocking
Stop	Only if continuation impossible

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