Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add distsystem/codex-desktop-linux --skill agent-workspace-linuxgit clone --depth 1 https://github.com/distsystem/codex-desktop-linuxWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/distsystem/codex-desktop-linux/agent-workspace-linux)<a href="https://agentmods.dev/skills/distsystem/codex-desktop-linux/agent-workspace-linux"><img src="https://agentmods.dev/badge/skills/distsystem/codex-desktop-linux/agent-workspace-linux/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/distsystem/codex-desktop-linux/agent-workspace-linux"><img src="https://agentmods.dev/badge/skills/distsystem/codex-desktop-linux/agent-workspace-linux.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00070 | $0.01728 |
| Opus 5.5 | $0.00028 | $0.00691 |
| Sonnet 5.5 | $0.00014 | $0.00346 |
| Haiku 4.5 | $0.00007 | $0.00173 |
Grade B, and why
agent-workspace-linux scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
`~/.codex/config.toml` for normal Codex for Linux setup. This is a copy
100% identical to agent-workspace-linux — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.
agent-workspace-linux
Drive an isolated, agent-owned Linux desktop and workspace-owned browser through
the agent-workspace-linux MCP server. The workspace runs apps, browser
automation, screenshots, clipboard, and input inside its own hidden display,
never the user's real desktop, focus, or host Chrome.
This skill is the lightweight entry point. The MCP exposes many tools; do not load, list, or paste them all up front. Route by phase and ask the host to load only the tool schemas needed for the next action.
Critical Boundaries
Use the dedicated Codex for Linux feature page for setup
Codex for Linux owns Agent Workspace setup through the Agent Workspaces page:
binary path, page-authored permission rules, permission file mutation,
Reconnect/Smoke test, profile creation, workspace start/stop, and viewer launch.
Do not send users to generic MCP settings, general configuration pages, or
~/.codex/config.toml for normal Codex for Linux setup.
Skip unless: the host is Codex for Linux and the task is setup, permission changes, reconnect/restart, or the workspace tools are unavailable.
Keep tools progressive
The bundled installer is skill-first. ./install.sh installs this skill under
~/.codex/skills by default and leaves generic Codex MCP config untouched
unless the user explicitly chooses --codex-configure or --permissions.
For migration only, ./install.sh --clean-codex-config removes stale generic
Codex MCP entries left by older installs; restart or reconnect Codex afterward.
Skip unless: the user asks how to install/register the backend or why the tool family should not be loaded at startup.
Never target the host desktop
Use this skill only for the hidden workspace. For the user's real Linux desktop, real Chrome profile, existing tabs, or host focus/mouse/keyboard, use the appropriate host-desktop or browser tool instead.
Skip unless: the requested action can run inside the isolated workspace display or workspace-owned browser.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 153 lines · 70 tokens per session scan B d7667ac34c05
agent-workspace-linux is a skill published in the GitHub repository distsystem/codex-desktop-linux (15 stars, last pushed 3mo ago), licensed MIT. It adds 70 tokens to every session and 1,728 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). It is 100% identical to agent-workspace-linux, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
debug-optimize-lcp
Guides debugging and optimizing Largest Contentful Paint (LCP) using Chrome DevTools MCP tools. Use this skill whenever the user asks about LCP performance, slow page loads, Core Web Vitals optimization, or wants to understand why their page's main content takes too long to appear. Also use when the user mentions…
interactive-login
Log a CLI in with a browser/device-code flow (aws sso, gh, glab, gcloud, …) and save the result to the keychain so later commands can request it through execute.credentials.
pinchtab-mcp
Use this skill when a task requires browser automation through PinchTab's MCP server connected to a remote browser instance. Covers navigation, element interaction, data extraction, form filling, multi-step flows, and session management via MCP tools.
azure-messaging-webpubsub-java
Build real-time web applications with Azure Web PubSub SDK for Java. Use when implementing WebSocket-based messaging, live updates, chat applications, or server-to-client push notifications.
cua-driver
Use Cua Driver for desktop or browser tasks that are awkward or unavailable through Bash/APIs, or when the user explicitly wants GUI interaction: app testing, visual bug reproduction, form filling, calendar entry, screenshots, and demo recording. Also covers Cua setup; not OpenAI Codex Computer Use or web research.
open-design-browser
Inspect and exercise local HTML design artifacts with the existing agent-browser CLI, including screenshots and keyboard or interaction checks. Use when rendered evidence helps author or review a design; excludes browser installation, remote services, and unrelated browser automation.