Ghostex is a developer workspace for running and supervising multiple AI coding agents, with separate chats, command-line views, and persistent sessions in a Rust-based desktop shell. Developers use it to switch between agents, review work, preview pages, and continue sessions from mobile devices.
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 maddada/Ghostex --skill ghostex-browser-usegit clone --depth 1 https://github.com/maddada/GhostexWrote 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/maddada/ghostex/ghostex-browser-use)<a href="https://agentmods.dev/skills/maddada/ghostex/ghostex-browser-use"><img src="https://agentmods.dev/badge/skills/maddada/ghostex/ghostex-browser-use/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/maddada/ghostex/ghostex-browser-use"><img src="https://agentmods.dev/badge/skills/maddada/ghostex/ghostex-browser-use.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00090 | $0.02430 |
| Opus 5.5 | $0.00036 | $0.00972 |
| Sonnet 5.5 | $0.00018 | $0.00486 |
| Haiku 4.5 | $0.00009 | $0.00243 |
Grade A, and why
ghostex-browser-use 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 13d 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.
How it starts
The opening of the file, as written. The whole thing — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ghostex-browser-use
Use Trycua's typed browser workflow for supported browser page content. Keep the browser bound to an exact native window and verify every mutation from a fresh semantic snapshot.
Read the cua-driver skill first
Before the first cua-driver call, read Trycua's cua-driver skill: it is the
source of truth for the installed driver's tools, schemas, safety rules and
platform notes, and this skill only adds Ghostex's guidance on top. Load
$cua-driver if your agent offers it; otherwise read its SKILL.md and the
reference files it links, above all BROWSER.md:
cat "$(cua-driver skills path)/SKILL.md"
From WSL, ask the Windows side for the path and translate it:
cat "$(wslpath -u "$(powershell.exe -NoProfile -Command 'cua-driver skills path' | tr -d '\r')")/SKILL.md"
If the skill is missing, install it with cua-driver skills install (through
powershell.exe from WSL), or from Settings > Integrations.
Use the cua-driver CLI, not MCP. Do not configure, register, or invoke a
Trycua MCP server for this workflow.
Route the task
- Use this skill for page content in supported Chrome, Chromium, Edge, and exactly correlated Electron surfaces.
- Use
$ghostex-embedded-browser-usefor Ghostex's built-in CEF browser panes. - Use
$ghostex-computer-usefor browser chrome, native prompts and dialogs, Safari, Firefox, or a surface that Trycua cannot bind exactly. - Prefer an application API, connector, or CLI when the requested result does not require browser UI interaction.
Check readiness
Run read-only checks before starting:
which cua-driver
cua-driver status
cua-driver check_permissions '{"prompt":false}'
cua-driver list-tools
If the daemon is not running on macOS, start the signed app in the background:
open -n -g -a CuaDriver --args serve
macOS: "no vendor-signed system Chromium executable is available"
The driver launches isolated profiles only from /Applications/Google Chrome.app or /Applications/Microsoft Edge.app, gated on
codesign --verify --strict. A drag-installed Chrome often carries
com.apple.FinderInfo extended attributes, which fail strict verification as
"resource fork, Finder information, or similar detritus not allowed" and
surface as that refusal. Verify, then strip the attribute (signature,
notarization, and the user's profile are untouched):
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 13d ago Changed · +10 lines c295bfe8c59c
- 18d ago Changed · +17 lines 6111ad304cdf
- 1mo ago Changed · +54 lines 832bfe0e7922
- 1mo ago First seen · 161 lines · 90 tokens per session scan A 925b0b3f9e65
ghostex-browser-use is a skill published in the GitHub repository maddada/Ghostex (1,420 stars, last pushed today), licensed MIT. It adds 90 tokens to every session and 2,430 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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