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install-codex-plugin

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UpdatedJune 20, 2026 at 22:18

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.

Installation

Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.

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understudylabs

understudylabs/understudy-agent-tools

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Computer Occupations, All OtherComputer and Mathematical Occupations·SOC 15-1299

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name	install-codex-plugin
description	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.
metadata	{"understudy":{"mode":"automatic","safety":"local-first","cli_required":false}}

Install the Understudy Codex plugin

This skill is a compatibility shim. The consolidated setup surface is install-agent-adapter.

Procedure

Load install-agent-adapter and run it with platform codex.

Use its reference.md for the current marketplace registration:

codex plugin marketplace add "$REPO"

Activation is in Codex:

/plugins

Choose 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.toml by 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.