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 agentmods add skills/metahub-tech/agent-fleet/using-macnpx skills add metahub-tech/agent-fleet --skill using-macgit clone --depth 1 https://github.com/metahub-tech/agent-fleetWhat 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 | $0.00056 | $0.02669 |
| Opus 5 | $0.00028 | $0.01334 |
| Sonnet 5 | $0.00011 | $0.00534 |
| Haiku 4.5 | $0.00006 | $0.00267 |
Grade A, and why
using-mac scanned grade A 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
# 1. Strip Gatekeeper quarantine if downloaded via browser/Safari (curl How it starts
The opening of the file, as written. The whole thing — 189 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Using mac-device
Drive a remote Mac test machine via the mac-device MCP server (FastMCP, streamable-http on Tailscale, port 8767). Multi-client native; advisory single-holder coordination; 41 tools spanning state / screen / mouse / keyboard / process / file / search / zsh / AppleScript.
Critical patterns
Screenshot pixels == click pixels (logical / point space)
take_screenshot is sized to logical pixels (e.g. 1440x900 on a Retina MacBook), matching tap(x, y) and get_screen_size. So coordinates from a screenshot can be passed directly to tap without scaling. This is implemented server-side: the raw ImageGrab capture is physical (2880x1800) but the tool resizes before returning.
get_screen_size # {"width": 1440, "height": 900} -- logical
take_screenshot # PNG also at 1440x900
tap(x=720, y=450) # center; same space as screenshot
If taps miss anyway: usually a permission issue, NOT a coordinate issue. Verify Accessibility is granted (System Settings > Privacy & Security > Accessibility shows Python.app, switch on).
macOS modifiers: cmd, not ctrl
press_key("cmd+s") saves; press_key("cmd+space") opens Spotlight. paste_text already uses Cmd+V internally. Modifier aliases:
| You write | pyautogui receives |
|---|---|
cmd |
command |
option / alt |
option |
ctrl |
ctrl |
shift |
shift |
Long-running tasks: start_process, NOT run_shell
run_shell caps at 60s (max 600s). For builds, installs, slow networks:
{pid} = start_process(command="...", shell="zsh")
read_process_output(pid=..., offset=-200, length=200) # tail; poll periodically
force_terminate(pid) # if abandoned
list_sessions() # see all started_process slots
run_shell is fine for one-shot < 60s commands like date, port checks, simple file moves.
Controlling other apps: run_applescript
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.
- 2d ago First seen · 189 lines · 56 tokens per session scan A 7b3ead2d98c1
using-mac is a skill published in the GitHub repository metahub-tech/agent-fleet (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 56 tokens to every session and 2,669 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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