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excalidraw

100 / 100 · Low risk

Fine to try.

By autonomous-ai/openharness (GitHub) · coding · 1,487 stars · scanned at commit 92aa766

Draw diagrams as .excalidraw files — architectures, flows, sequences, whiteboard sketches — with the scene helper or by editing the JSON, judged by the verdict and shown hand-drawn in the pane. Use for any request that ends in a diagram.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'excalidraw' ] || [ -L ~/.agents/skills/'excalidraw' ]; then echo 'A skill folder named excalidraw already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/autonomous-ai/openharness' "$d" && git -C "$d" checkout --quiet '92aa7660f44e222456248fc9ad16ed0e0f19d43f' -- 'store/agents/excalidraw/skills/excalidraw' && mkdir -p ~/.agents/skills && cp -R "$d"/'store/agents/excalidraw/skills/excalidraw' ~/.agents/skills/'excalidraw' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'excalidraw' ~/.claude/skills/'excalidraw' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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