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/install screengrab
Description
Quick macOS display snapshot. Captures what's currently on screen without opening a browser. Saves to /tmp or a custom path. Supports multiple displays and p...
Usage Guidance
This skill simply runs the macOS screencapture tool and saves images locally. Before installing, confirm you intend to allow screenshots (they may include sensitive info) and that the host is macOS with /usr/sbin/screencapture available. Note the metadata omission: the registry did not mark required binaries even though the script needs system_profiler and screencapture. Check where files are written (default /tmp) and who can read them, and avoid running watch mode on shared/remote machines where captured images might expose secrets. If you need stricter controls, restrict who can invoke the skill or require the agent not to run it autonomously.
Capability Analysis
Type: OpenClaw Skill
Name: screengrab
Version: 1.0.0
The 'screengrab' skill is a legitimate utility providing a Python wrapper for the macOS native '/usr/sbin/screencapture' tool. It allows an agent to capture screenshots, list displays, and perform periodic captures for debugging or visual verification purposes. The code (scripts/screengrab.py) uses safe subprocess execution with no network activity, data exfiltration, or obfuscation, and the instructions in SKILL.md are transparent and aligned with the tool's functionality.
Capability Assessment
Purpose & Capability
The name, description, SKILL.md, and the included script all consistently implement a macOS screenshot wrapper using /usr/sbin/screencapture and system_profiler. Minor metadata mismatch: registry 'Required binaries' lists none, but the README/script require the macOS 'screencapture' and use 'system_profiler'. This is an accuracy/metadata issue, not a functional mismatch.
Instruction Scope
SKILL.md instructs running the included Python script to take/list/watch screenshots. The runtime instructions and the script confine actions to invoking local system commands, writing image files, and printing paths. The script does not read unrelated user files or environment variables, nor does it transmit data externally.
Install Mechanism
No install spec — instruction-only plus a single included script. Nothing is downloaded or written during install by the skill itself, reducing installation risk.
Credentials
Skill declares no required environment variables or credentials and the script does not access secrets. It does require local system utilities (screencapture, system_profiler) which are proportional to its purpose.
Persistence & Privilege
always is false and the skill does not request persistent system-level privileges, nor does it modify other skills or global agent configuration.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install screengrab - After installation, invoke the skill by name or use
/screengrab - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
- Initial release of screengrab: a minimal macOS tool for instantly capturing current screen state.
- Save screenshots to /tmp or any custom path; supports multiple displays.
- Includes watch mode for periodic screen captures.
- Lists connected displays and allows capture of a specific one.
- Designed for fast debugging, app state checks, and remote awareness—without launching browsers or extra dependencies.
Metadata
Frequently Asked Questions
What is Screengrab?
Quick macOS display snapshot. Captures what's currently on screen without opening a browser. Saves to /tmp or a custom path. Supports multiple displays and p... It is an AI Agent Skill for Claude Code / OpenClaw, with 174 downloads so far.
How do I install Screengrab?
Run "/install screengrab" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Screengrab free?
Yes, Screengrab is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Screengrab support?
Screengrab is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Screengrab?
It is built and maintained by wrentheai (@wrentheai); the current version is v1.0.0.
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