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 blockcell-labs/blockcell --skill app_controlgit clone --depth 1 https://github.com/blockcell-labs/blockcellWrote 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/blockcell-labs/blockcell/app_control)<a href="https://agentmods.dev/skills/blockcell-labs/blockcell/app_control"><img src="https://agentmods.dev/badge/skills/blockcell-labs/blockcell/app_control/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/blockcell-labs/blockcell/app_control"><img src="https://agentmods.dev/badge/skills/blockcell-labs/blockcell/app_control.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 | $0.00000 | $0.00416 |
| Opus 5.5 | $0.00000 | $0.00166 |
| Sonnet 5.5 | $0.00000 | $0.00083 |
| Haiku 4.5 | $0.00000 | $0.00042 |
Grade A, and why
app_control 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 2mo 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.
What it actually says
App Control
Shared {#shared}
- 适合查看或操作 macOS 应用，例如 Windsurf、VS Code、Terminal、Finder、Safari、Chrome、微信、飞书。
- 常用名称映射：
- Windsurf ->
Windsurf - VS Code / vscode ->
Code - 终端 ->
Terminal - 访达 ->
Finder - Chrome ->
Google Chrome - 飞书 ->
Lark
- Windsurf ->
- 如果用户没有明确应用名，但问题明显是在问当前前台应用，可先获取前台应用再继续。
Prompt {#prompt}
- 只有在“目标应用不明确”或“要执行的动作不明确”时才澄清。
- 查看应用当前状态时，优先策略：
- 如果未给应用名且明显在问当前界面，先用
app_control获取 frontmost app。 - 优先用
read_ui获取界面结构，默认从较浅层开始。 - 只有在用户明确要截图，或需要给用户留存视觉证据时，才补
screenshot。
- 如果未给应用名且明显在问当前界面，先用
- 执行动作时，优先策略：
- 必要时先
activate - 再执行
press_key、type、click_menu等单个明确动作 - 执行后用
read_ui或screenshot做一次确认
- 必要时先
- 如果应用名解析失败，先用
list_apps判断是否在运行，再告知用户。 - 输出要求：
- 说明目标应用
- 说明执行的动作或读到的当前状态
- 说明结果是否成功
- 如果还差一步才能完成，给出下一步建议
- 不要连续触发多次不必要的界面操作，不要输出 AppleScript 或内部控制细节。
What ships with it
4 files 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.
- 2mo ago First seen · 33 lines · 0 tokens per session scan A cb8ed9bd53f3
app_control is a skill published in the GitHub repository blockcell-labs/blockcell (261 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 416 tokens. 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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