How do I install the Codex Computer Use skill?

Run npx skillmds@latest add sainytk/codex-computer-use in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Codex Computer Use safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Codex Computer Use?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Codex Computer Use free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Codex Computer Use?

sainytk (@sainytk) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Codex Computer Use by sainytk — Agent Skill

Name: Codex Computer Use
Author: sainytk

Codex Computer Use

Run Codex non-interactively to complete desktop GUI tasks with Computer Use. Use when the user asks to delegate a Mac app/browser UI task to a Codex subprocess, run computer-use through codex exec, inspect local apps, read messages, click/type/scroll in GUI apps, or smoke-test computer-use automation.

sainytk ba19825 3 files · 10.5 KB Updated Sep 17, 2026

File contents

codex-computer-use

Use this skill when a task should be completed by a separate codex exec subprocess that can operate local Mac apps through Computer Use.

The implementation lives under scripts/:

scripts/run.ts - standalone Bun runner around codex exec

Runner

Basic use:

bun .agents/skills/codex-computer-use/scripts/run.ts \
  --task "Read the latest visible LINE messages. Do not reply."

Smoke-test command construction without launching Codex:

bun .agents/skills/codex-computer-use/scripts/run.ts \
  --task "List currently running apps using Computer Use." \
  --dry-run

Capture the final sub-agent answer:

bun .agents/skills/codex-computer-use/scripts/run.ts \
  --task "Read the latest visible LINE messages. Do not reply." \
  --out output/codex-computer-use/line-latest.txt

Behavior

The runner:

Finds codex from CODEX_BIN or PATH.
Runs codex exec in non-interactive mode.
Uses --cd, --sandbox workspace-write, --skip-git-repo-check, and --ephemeral by default.
Writes the final sub-agent message when --out is provided.
Injects instructions to use the computer-use skill and avoid side effects.

Computer Use currently operates the active macOS GUI. There is no confirmed headless/background Computer Use mode exposed by codex exec; expect foreground app focus changes when a real GUI task runs.

Safety

Default to read/inspect-only tasks unless the user explicitly asks for UI changes. Do not send messages, submit forms, delete data, change settings, purchase, upload, or transmit sensitive data unless the user clearly requested that exact action and the Computer Use confirmation policy allows it.

For real runs, tell the user the task may focus or manipulate local apps. For non-disruptive validation, prefer --dry-run.

---name: codex-computer-usedescription: Run Codex non-interactively to complete desktop GUI tasks with Computer Use. Use when the user asks to delegate a Mac app/browser UI task to a Codex subprocess, run computer-use through codex exec, inspect local apps, read messages, click/type/scroll in GUI apps, or smoke-test computer-use automation.---# codex-computer-useUse this skill when a task should be completed by a separate `codex exec`subprocess that can operate local Mac apps through Computer Use.The implementation lives under `scripts/`:- `scripts/run.ts` - standalone Bun runner around `codex exec`## RunnerBasic use:```bashbun .agents/skills/codex-computer-use/scripts/run.ts \ --task "Read the latest visible LINE messages. Do not reply."```Smoke-test command construction without launching Codex:```bashbun .agents/skills/codex-computer-use/scripts/run.ts \ --task "List currently running apps using Computer Use." \ --dry-run```Capture the final sub-agent answer:```bashbun .agents/skills/codex-computer-use/scripts/run.ts \ --task "Read the latest visible LINE messages. Do not reply." \ --out output/codex-computer-use/line-latest.txt```## BehaviorThe runner:1. Finds `codex` from `CODEX_BIN` or `PATH`.2. Runs `codex exec` in non-interactive mode.3. Uses `--cd`, `--sandbox workspace-write`, `--skip-git-repo-check`, and `--ephemeral` by default.4. Writes the final sub-agent message when `--out` is provided.5. Injects instructions to use the `computer-use` skill and avoid side effects.Computer Use currently operates the active macOS GUI. There is no confirmedheadless/background Computer Use mode exposed by `codex exec`; expect foregroundapp focus changes when a real GUI task runs.## SafetyDefault to read/inspect-only tasks unless the user explicitly asks for UI changes.Do not send messages, submit forms, delete data, change settings, purchase, upload,or transmit sensitive data unless the user clearly requested that exact action andthe Computer Use confirmation policy allows it.For real runs, tell the user the task may focus or manipulate local apps. Fornon-disruptive validation, prefer `--dry-run`.

Frequently asked questions