Install Codex Plugin
Compatibility shim for Codex installs. Use when a developer asks to install, update, enable, reinstall, remove, or verify the Understudy Codex plugin - "install Understudy in Codex", "add the Codex plugin", "make Codex see the skills". Route to install-agent-adapter with platform codex.
Install
$ agentstack add skill-understudylabs-understudy-agent-tools-install-codex-plugin ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-understudylabs-understudy-agent-tools-install-codex-plugin) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Install the Understudy Codex plugin
This skill is a compatibility shim. The consolidated setup surface is [install-agent-adapter](../install-agent-adapter/SKILL.md).
Procedure
Load install-agent-adapter and run it with platform codex.
Use its [reference.md](../install-agent-adapter/reference.md#codex) for the current marketplace registration:
codex plugin marketplace add "$REPO"Activation is in Codex:
/pluginsChoose understudy-skills, install or enable understudy, then ask:
Use the Understudy onboarding skill for this project.Safety Gates
Local-first and free: registering the Codex marketplace only makes local skills available. It must not authenticate, upload data, inspect secret values, download model weights, start hosted jobs, or make provider calls.
- Do not claim the plugin is installed when only the marketplace is registered.
- Do not edit
~/.codex/config.tomlby hand unless the user explicitly asks. - Do not copy or fork skill content for Codex.
Resolve CLI
No Understudy CLI command is required. Use codex plugin marketplace add when available; otherwise show the manual /plugins activation path from install-agent-adapter/reference.md.
Output Standard
End with: that this routed through install-agent-adapter; whether the Codex marketplace was registered/refreshed/shown for manual run; the /plugins step; the next onboarding prompt; and the marketplace removal command.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: understudylabs
- Source: understudylabs/understudy-agent-tools
- License: MIT
Install and usage instructions live in the source repository linked above.
Reviews
No reviews yet, be the first.
Write a review
Versions
- v0.1.0 Imported from the upstream source.