Read, create and edit Excalidraw whiteboards on a boards server (github.com/ly-solutions/boards) as text — get a board's shapes, labels, connections and comments as markdown from its link, draw a new diagram from a node/edge graph (the server does the layout), add or change shapes, reply to comments.
Install
npx skills add ly-solutions/harnessly --skill boardsnpx skills add ly-solutions/harnessly --skill boards -a claude-code -gnpx skills add ly-solutions/harnessly --skill boards -a codex -ggemini skills install https://github.com/ly-solutions/harnessly.git --path skills/upstream/agent-skills/plugins/boards/skills/boardsgh skill install ly-solutions/harnessly boardsgit clone --depth 1 https://github.com/ly-solutions/harnessly /tmp/ly-solutions__harnessly
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/ly-solutions__harnessly/skills/upstream/agent-skills/plugins/boards/skills/boards ~/.claude/skills/boards # Claude Code
cp -R /tmp/ly-solutions__harnessly/skills/upstream/agent-skills/plugins/boards/skills/boards ~/.agents/skills/boards # Codex, Cursor, Gemini CLI, Copilot, OpenCode