cofounder
v0.1.0Elliott's personal AI-founder OS: department agents (Strategy, Product, Marketing, Sales), venture workflows, and a portfolio hub. Free, local, built on Claude Code.
By Elliott RosenbergLicense: MIT0 GitHub starsUpdated 3 days ago
Directory evidence
- Runtimes
- Claude Code
- Parsed components
- 13 skill or MCP entries
- Source updated
- Sep 20, 2026
- Manifest status
- Canonical path parsed
The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →
Install cofounder for Claude Code
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install cofounder@agent-plugin-marketplacePaste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.
The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.
Get the source manually
git clone https://github.com/elliottsrosenberg-byte/cofounderClone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.
Plugin files
├── .claude-plugin/plugin.json├── skills/check-in/SKILL.md├── skills/customer-interview/SKILL.md├── skills/landing-page/SKILL.md├── skills/launch-playbook/SKILL.md├── skills/mvp-scope/SKILL.md├── skills/new-venture/SKILL.md├── skills/offer/SKILL.md├── skills/panel-review/SKILL.md├── skills/positioning/SKILL.md├── skills/pricing/SKILL.md├── skills/ship-checklist/SKILL.md├── skills/status/SKILL.md└── skills/validate-idea/SKILL.md
Included Skills13
Daily portfolio standup - reads every venture's git activity, status, deadlines, and open loops, then writes a short brief on what moved, what's stuck, and what's on Elliott. Use each morning, when Elliott asks "what's the status", "standup", or "check in", or from a scheduled task.
Mom Test customer discovery - generates compliant interview scripts and grades transcripts, extracting pain points and commitment signals while flagging worthless data. Use when preparing to talk to potential users, or when Elliott pastes interview notes or a transcript to analyze.
Write or audit a landing page to the StoryBrand + Julian Shapiro structure, fed by the venture's positioning - copy and section-by-section layout, or a scored teardown of an existing page. Use for "landing page", "improve this page", smoke-test pages for validation, or pre-launch page work.
Full launch plan across Product Hunt, Hacker News, and communities - timeline, assets, per-community drafts respecting each community's norms, and a launch-day run sheet. Use when a venture approaches shippable, or Elliott says "plan the launch", "launch this", "Product Hunt".
Turn an idea or feature list into a one-page PRD scoped to test exactly one assumption, with an explicit cut list and a proving demo. Use before building anything bigger than a small fix, or when Elliott asks "scope this", "what's the MVP", or a build feels like it's sprawling.
Spin up a new venture in Elliott's cofounder portfolio - interview, confirm the stack, create the GitHub repo, scaffold the .cofounder workspace, register it in the hub, and kick off a strategy research pass. Use when Elliott has a new idea to start, says "new venture", "new idea", or wants to add an idea to the portfolio.
Construct or sharpen the venture's offer using the Hormozi value equation - dream outcome, likelihood, time, effort - plus guarantee, bonuses, urgency, and naming. Use when conversion is weak, when packaging the thing for a launch, or when Elliott asks "make this a better offer".
The Panel - five-lens review of a venture artifact (feature, page, launch plan, anything shippable) ending in one verdict - SHIP, FIX THEN SHIP, or RETHINK. Use before anything user-facing ships, when Elliott asks "review this", "is this ready", "tear this apart", or is stuck at "is this good enough?".
April Dunford's Obviously Awesome 5-step positioning - produces or refreshes the positioning block in a venture's shared context. Use when positioning is empty or stale, before landing pages or launch copy, or when Elliott asks "how should we position this".
Pricing strategy for a venture - picks the value metric, designs 3 tiers with anchoring, gives Van Westendorp survey questions when there are users to ask, and ships a defensible default price when there aren't. Use for "what should this cost", "pricing", tier design, or price-change decisions.
Pre-launch readiness pass for anything user-facing - verifies analytics, error visibility, sharing surfaces, mobile, empty states, and payments against the running artifact. Use before a deploy, launch, or store submission, or when Elliott asks "is this ready to ship".
Quick portfolio overview in the terminal - every venture's stage, deadline countdown, last activity, and pending approvals. Lighter than check-in (reads, never writes). Use when Elliott asks "portfolio status", "where is everything", or wants a quick look without a full standup.
Validate a venture idea via assumption mapping and a riskiest-assumption test - ranks assumptions, designs the smallest experiment with pre-committed pass/fail numbers, and delivers a verdict. Use for "is this idea worth building", "validate this", new-venture kickoff research, or before committing build time to a direction.
Plugin manifests1
{
"name": "cofounder",
"description": "Elliott's personal AI-founder OS: department agents (Strategy, Product, Marketing, Sales), venture workflows, and a portfolio hub. Free, local, built on Claude Code.",
"version": "0.1.0",
"author": {
"name": "Elliott Rosenberg",
"email": "[email protected]"
},
"repository": "https://github.com/elliottsrosenberg-byte/cofounder",
"license": "MIT"
}For maintainers
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