vellum
by Augustin BENGOLEA · ★ 4 · updated 3 days ago
Plan at the frontiers and review the plan in the browser: decisions and interfaces before mechanics, vertical slices each closed by a check. /vellum:start opens a planning mode of its own: Claude writes the plan and its mockups and grills the reviewer on the open choices; the reviewer comments, edits or approves in a page, and the answer reaches Claude as a prompt.
Install
git clone https://github.com/bengous/claude-code-pluginsclaude --plugin-dir ./claude-code-plugins/vellumThen run /reload-plugins or start a new session. Requires Claude Code 2.1.287+.
What it hooks into
From an automated scan with claude plugin validate, not a security review. Mods run with your permissions; read the code before installing.
- Events
session.startskill.promptcommand.runui.rendertool.checktool.callprompt.submitsession.appendturn.startturn.complete- API calls
$.agent.list$.agent.spawn$.clock.after$.clock.every$.clock.now$.env.get$.env.set$.fs.stat$.http.fetch$.process.spawn$.prompt.submit$.session.cwd$.session.id$.session.root$.store.delete$.store.get$.store.set$.tool.call$.tool.register$.ui.invalidate$.ui.log$.ui.resolve$.ui.status- Draws
AbovePrompt- Can see
the vellum:start skillthe vellum:stop skillmcp__vellum__submit callsmcp__vellum__state callsmcp__vellum__grill_ask|mcp__vellum__propose|AskUserQuestion callsevery prompt- Reach
- level 3 of 3 other: $.process.spawnnetworksets env varsdrives Claudereads filesreads env varspersists statedraws
Origin
- How it got here
- Automated scan of public GitHub repos, via the CC0 dataset awesome-claude-code-mods (scan of ).
- Repository
- github.com/bengous/claude-code-plugins
- Path in repo
vellum- Author
- Augustin BENGOLEA @bengous
- License
- MIT
- First published
- Last pushed
- First listed here
Name and description come from the mod's own manifest. We link to the code; we don't host it, and it stays under its author's license.