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Corespeed Excalidraw Rendering

by Zypher Agent · GitHub ↗ · v1.0.0 · MIT-0
cross-platform ⚠ suspicious
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Install in OpenClaw
/install corespeed-excalidraw-rendering
Description
Render Excalidraw (.excalidraw) files to PNG images and take screenshots of web pages using headless Chrome via the brow CLI. Use when a user asks to render...
README (SKILL.md)

Corespeed Excalidraw Rendering — Browser Rendering CLI

Render Excalidraw files to PNG and capture web page screenshots using headless Chrome.

Workflow

  1. Ensure brow is installed
  2. Install the managed browser: brow browser install
  3. Run brow --help to see all available options
  4. Run the rendering command

Prerequisites

If brow is not installed:

curl -fsSL https://raw.githubusercontent.com/corespeed-io/brow/main/install.sh | bash

Before first render, install the managed browser (safe to re-run):

brow browser install

Usage

Run brow --help for the full CLI reference. Quick examples:

# Render Excalidraw to PNG
brow -m excalidraw -i drawing.excalidraw -o output.png

# Screenshot a web page
brow -u https://example.com -o screenshot.png

Notes

  • Browser auto-managed. brow browser install downloads Chrome to a local cache. No system Chrome required.
  • Use timestamps in filenames: yyyy-mm-dd-hh-mm-ss-name.png.
  • Do not read generated images back; report the saved path only.

Support

Built by Corespeed. If you need help or run into issues:

Usage Guidance
This skill appears to do what it says: invoke the 'brow' CLI to render Excalidraw files and take screenshots. The main thing to watch for is the install method: the SKILL.md recommends running a remote install script via 'curl ... | bash', which will execute code from the internet on your machine and then download a managed Chrome binary. Before installing, consider: (1) review the install script at https://raw.githubusercontent.com/corespeed-io/brow/main/install.sh yourself instead of piping it directly to a shell; (2) prefer installing 'brow' from a package manager or official release artifacts if available; (3) run the install in a sandbox/container or on a machine where a managed Chrome download is acceptable; (4) verify the GitHub repo and project reputation (signatures, checksums, or release tags if available); and (5) ensure you are comfortable with the tool downloading browser binaries to your user cache. If you cannot or do not want to run arbitrary install scripts, do not install the CLI and avoid using this skill.
Capability Analysis
Type: OpenClaw Skill Name: corespeed-excalidraw-rendering Version: 1.0.0 The skill employs a high-risk installation pattern in SKILL.md, using 'curl | bash' to execute a remote script from GitHub (raw.githubusercontent.com/corespeed-io/brow/main/install.sh). While the stated functionality of rendering Excalidraw files and capturing screenshots is plausible, the use of unverified remote code execution for installation and the subsequent automated download of browser binaries ('brow browser install') are significant security risks that lack transparency and auditability.
Capability Assessment
✓ Purpose & Capability
The name/description match the actions described in SKILL.md. Requiring the 'brow' binary is appropriate for a skill that renders Excalidraw files and captures screenshots; no unrelated binaries, credentials, or config paths are requested.
✓ Instruction Scope
SKILL.md only instructs installing/using the 'brow' CLI, running 'brow browser install', and calling brow commands to render files or take screenshots. It does not instruct reading unrelated files, accessing other environment variables, or transmitting data to unexpected endpoints.
ℹ Install Mechanism
The provided install instruction pipes a script from raw.githubusercontent.com into bash (curl ... | bash). GitHub raw is a known host, but piping a remote install script to a shell executes arbitrary code on the machine and is a moderate-risk install pattern. The skill also relies on 'brow browser install' which downloads a managed Chrome binary into a local cache — expected for the tool but worth being aware of.
✓ Credentials
No environment variables, credentials, or config paths are requested. The lack of extra secrets is proportional to the stated purpose.
✓ Persistence & Privilege
The skill is instruction-only (no install spec that writes persistent configuration for the agent) and 'always' is false. It does not request permanent presence or claim to modify other skills or system-wide settings.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install corespeed-excalidraw-rendering
  3. After installation, invoke the skill by name or use /corespeed-excalidraw-rendering
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of corespeed-excalidraw-rendering. - Supports rendering Excalidraw (.excalidraw) files to PNG images. - Enables capturing website screenshots using headless Chrome via the brow CLI. - Includes setup instructions for installing and using the brow CLI and managed browser. - Provides example commands for rendering diagrams and screenshots. - Offers official support channels for assistance.
Metadata
Slug corespeed-excalidraw-rendering
Version 1.0.0
License MIT-0
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is Corespeed Excalidraw Rendering?

Render Excalidraw (.excalidraw) files to PNG images and take screenshots of web pages using headless Chrome via the brow CLI. Use when a user asks to render... It is an AI Agent Skill for Claude Code / OpenClaw, with 105 downloads so far.

How do I install Corespeed Excalidraw Rendering?

Run "/install corespeed-excalidraw-rendering" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Corespeed Excalidraw Rendering free?

Yes, Corespeed Excalidraw Rendering is completely free, licensed under MIT-0. You can download, install and use it at no cost.

Which platforms does Corespeed Excalidraw Rendering support?

Corespeed Excalidraw Rendering is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Corespeed Excalidraw Rendering?

It is built and maintained by Zypher Agent (@zypher-agent); the current version is v1.0.0.

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