The fastest way to validate your startup idea.

Where founders and AI collaborate to turn assumptions into validated decisions.

Free early access. Help shape the product.

app.withfoundry.dev

Foundry application showing a Lean Canvas workspace

Claude

Start new chat

Recents

Help me build a lean canvas

What metrics should I track?

Customer interview questions

Product-market fit strategies

Competitive analysis template

Help me build a lean canvas

You

Help me build a lean canvas for my startup. We're building a platform that helps founders validate their ideas faster using AI.

Claude

I'll build out your lean canvas in Foundry. Let me start with the problem and solution sections:

Problem

1. Founders rely on gut feeling instead of systematic validation
2. The validation process is fragmented across multiple tools
3. Synthesizing qualitative data from interviews and research into actionable insights is time-consuming, manual, and error-prone

Solution

AI-powered canvas that auto-generates hypotheses and connects interviews, personas, and metrics in one place...

How can Claude help you today?↑

Claude is where you reason

Foundry is where it takes shape

The Problem

Most startups fail because founders build before they validate.

The tools exist for brainstorming. But nobody built the workflow that comes after: from assumptions to evidence to decisions.

You're guessing, not validating

Founders rely on gut instinct instead of structured validation. There's no workflow to move from assumptions to evidence. Just guesswork dressed up as strategy.

Your insights are everywhere

Canvas in Miro. Notes in Docs. Transcripts in a folder. Hypotheses in a spreadsheet. Nothing connects and context is lost.

Interviews happen, nothing changes

Turning hours of interviews into actionable insights is manual and error-prone. AI chatbots help brainstorm, but conversations vanish. Most founders skip synthesis entirely.

How It Works

You and AI, working as one. Five steps to validated decisions.

Foundry is the workspace where founders and Claude Cowork collaborate on generating insights and validation. Each loop gets you closer to product/market fit.

Better Together

You lead. Claude accelerates.

Connect Claude to Foundry via MCP and the Cofounder plugin to brainstorm your canvas, generate hypotheses, or synthesize interviews. AI agents work alongside you in real-time, not in a separate chat window.

Claude

Start new chat

Recents

Foundry: Analyze interviews

Foundry Cofounder: Canvas review

Hypothesis generation

Go-to-market copy

Competitor research

Foundry MCP: Analyze interviews

You

Use the Foundry MCP to analyze the 5 interview transcripts in my workspace and update my hypotheses.

Claude

Using Foundry's Cofounder skill via Foundry MCP, I've analyzed all 5 transcripts. Here's what I found:

3 hypotheses validated: pricing sensitivity, self-serve preference, and integration need all confirmed across 4+ interviews.

1 invalidated: users don't want a mobile app; desktop-first is the clear pattern.

I've updated your Foundry canvas and moved the validated items to your roadmap.

You

Run /pmf-coach to generate an interview guide for the remaining hypotheses.

How can Claude help you today?↑

↔

Foundry — Workspace

Hypotheses✓ Synced with Claude

✓

Pricing sensitivity is the #1 concern

Validated by 4 of 5 interviews

Validated

✓

Users want self-serve onboarding

Validated by 4 of 5 interviews

Validated

✓

Integration with existing tools matters

Validated by 5 of 5 interviews

Validated

Users need a mobile app

Invalidated: desktop-first preferred

Invalidated

Founders need AI-assisted synthesis

2 of 5 interviews. Needs more evidence

In Progress

Blog

Latest from the Foundry Blog

Framework

The Validation Stack: How We Think About Going from Zero to Product-Market Fit

We built Foundry because we kept seeing the same pattern: founders skipping validation and building blind. Here's the framework that changed how we think about early-stage product development.

12 min read

Framework