Desktop Act

A set of instructions for operating a Linux desktop application by taking screenshots, inspecting its controls and entering text.

In plain words
What is it for?
Use it for tasks such as checking a screen, clicking Save and typing a title in a Linux desktop app.
Why use it?
It helps an agent interact with graphical software when the work cannot be done through a text-only interface.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/distsystem/codex-desktop-linux/desktop-act
Any agent
npx skills add distsystem/codex-desktop-linux --skill desktop-act
Clone the repo
git clone --depth 1 https://github.com/distsystem/codex-desktop-linux

Made for: Claude Code, Codex.

Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 37 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00014 $0.00037
Opus 5 $0.00007 $0.00018
Sonnet 5 $0.00003 $0.00007
Haiku 4.5 $0.00001 $0.00004

Measured 2d ago against content hash dd6fc5afbc15, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Desktop Act scanned grade A with 0 findings 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 2d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to Desktop Act — 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.

record-replay-linux/tests/fixtures/skills/desktop-act/SKILL.md · 7 lines

What it actually says

Take a screenshot, inspect accessibility, click the Save button, then type the title.

Changes

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.

  1. 2d ago First seen · 7 lines · 14 tokens per session scan A dd6fc5afbc15

Subscribe to this mod's changes

Desktop Act is a skill published in the GitHub repository distsystem/codex-desktop-linux (12 stars, last pushed 1mo ago), licensed MIT. It adds 14 tokens to every session and 37 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to Desktop Act, differing in 0 lines, and is treated as a copy.

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