Guide · Agent skill
How to use the Lean Canvas Builder agent skill
Updated · written with AI from the project's own documentation and checked against our catalogue data
The lean-canvas skill is an agent skill from the phuryn/pm-skills collection that tells your AI agent how to build a Lean Canvas, a one-page business plan, for a startup or new product idea. This guide is for people who have never used agent skills before. By the end you will know what the skill does, how to install it, how to ask for a canvas in plain language, and where its limits are.
Lean Canvas Builderphuryn/pm-skills · MIT Download the skill Quick start
- 1Download the ZIP. Get the lean-canvas skill ZIP from the directory page.
- 2Unzip into your skills folder. Unzip it into ~/.claude/skills/ for personal use, or into .claude/skills/ inside a project.
- 3Or upload it in the Claude apps. In the Claude apps, open Settings → Capabilities → Skills and upload the skill.
- 4Describe your idea. Write a plain request that includes your product, target customers and any constraints.
- 5Ask for the riskiest assumptions. Request the assumptions and suggested experiments, such as a landing page, interviews or an MVP.
- 6Review and update. Treat the canvas as a draft and revise it as you collect real evidence.
What the lean-canvas skill makes the agent do
When you ask the agent to map out a startup or new product idea, the skill makes it fill in a Lean Canvas. The canvas covers the customer problem, proposed solution, unique value proposition, unfair advantage, customer segments, channels, revenue, cost structure and key metrics.
The skill also lists the riskiest assumptions in the plan and suggests quick experiments to test them, such as landing pages, customer interviews or a minimum viable product.
- Problem and solution, with the top customer needs and how each solution feature addresses them
- Unique value proposition and unfair advantage
- Customer segments and channels
- Revenue streams and cost structure
- Key metrics, including a North Star metric
- Riskiest assumptions and suggested validation experiments
Install the lean-canvas skill
The skill is distributed as a ZIP file from the directory page. You can install it in one of two ways. For a personal setup, download the ZIP, unzip it into ~/.claude/skills/. For a single project, unzip it into the .claude/skills/ folder inside that project.
If you use the Claude apps, you can instead upload the skill under Settings → Capabilities → Skills.
- Personal: unzip into ~/.claude/skills/
- Project only: unzip into .claude/skills/ in your project folder
- Claude apps: Settings → Capabilities → Skills, then upload
Trigger the skill with a natural request
You do not need a special command. Describe your idea and mention a canvas, a startup model or a business hypothesis. The skill's listed triggers include lean canvas, startup canvas, lean model and business hypothesis.
Give the agent as much context as you can. The skill works best when you provide a product or feature description, the target customer segments, the market context and problem space, and any metrics or business constraints you already have.
- "Make a lean canvas for a subscription app that helps dog walkers schedule visits."
- "Test this business hypothesis with a Lean Canvas: small bakeries will pay for automated wholesale orders."
- "Model a new venture for a meal-kit service for college students and list the riskiest assumptions."
- "Build a lean canvas for our new reporting feature and suggest validation experiments."
What you get back and how to use it
The output is a single canvas organised around the standard sections, with assumptions and hypotheses surfaced rather than hidden. Treat it as a draft. The skill's notes say to focus on the riskiest assumptions first and to update the canvas as you learn and validate.
The skill also states that Lean Canvas is best used as a fast brainstorming tool. For deeper strategy, it points to the Startup Canvas by Paweł Huryn, which separates strategy from the business model.
- Start with the riskiest assumption and design one small test for it
- Replace estimates with real interview notes or sales data as you get them
- Re-run the skill with updated facts to refresh the canvas
Safety notes: scripts and network access
According to the skill's listing, it requires nothing beyond the agent itself, does not run scripts and does not use the network. The only file in the package is SKILL.md, which contains the instructions the agent follows.
The skill only asks the agent to estimate figures from the information you provide. It does not verify market data, so check any market size, pricing or cost numbers against real sources before you rely on them.
- Requires: nothing listed
- Runs scripts: no
- Uses network: no
- Files: SKILL.md
Tips for better canvases
The more specific your input, the more useful the canvas. Vague ideas produce generic segments and value propositions. The skill asks for measurable detail where possible, so give it real numbers you already know, even rough ones.
Use the canvas to decide what to test, not to prove the idea is good. Keep it short, revisit it after each experiment, and move to a fuller strategy document before asking for investment or board approval.
- Name one target segment rather than a broad market
- Give the agent your known constraints, such as budget or team size
- Ask for the riskiest assumptions explicitly
- Ask for one landing page, interview or MVP test per assumption
What people use it for
- Sketching a new venture quickly before committing time or money
- Testing a business hypothesis for a new feature or product line as a product manager
- Learning the Lean Canvas framework and its limitations as a student
- Turning a rough startup idea into a one-page plan to share with a founding team
Frequently asked questions
How do I install the lean-canvas skill?
Download the ZIP from the directory page and unzip it into ~/.claude/skills/ for personal use, or into .claude/skills/ inside a project folder. If you use the Claude apps, you can upload it under Settings → Capabilities → Skills instead.
Does the lean-canvas skill require anything else?
The listing says it requires nothing beyond itself. It does not run scripts and does not use the network. The package contains a single file, SKILL.md.
Is the lean-canvas skill free?
The skill is published under the MIT licence. The source does not mention pricing, so check the directory page for any other terms.
What is the difference between a Lean Canvas and a Startup Canvas?
The Lean Canvas is a fast brainstorming tool built from the Business Model Canvas. The skill notes it lacks vision, trade-offs and coherence checks. The Startup Canvas separates strategy from the business model and is better for deeper planning.
Can the skill give me accurate market size or financial forecasts?
No. The skill estimates figures only from the information you supply and does not verify market data. Use it for hypotheses, then confirm numbers with real research.
Why isn't my skill triggering?
Make sure the folder was unzipped into ~/.claude/skills/ or the project's .claude/skills/ folder, or that the upload finished in Settings → Capabilities → Skills. Then use a request that mentions a lean canvas, startup canvas, lean model or business hypothesis.
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Our verdict
Use the lean-canvas skill if you need to sketch a startup or product idea quickly and list the assumptions to test first. Pick the Startup Canvas instead for investment decisions, board-level strategy, or anything that needs financial forecasts or verified market sizing.
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