Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/getcrew44/crew44/lean-ux-canvasnpx skills add getcrew44/crew44 --skill lean-ux-canvasgit clone --depth 1 https://github.com/getcrew44/crew44Wrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/getcrew44/crew44/lean-ux-canvas)<a href="https://agentmods.dev/skills/getcrew44/crew44/lean-ux-canvas"><img src="https://agentmods.dev/badge/skills/getcrew44/crew44/lean-ux-canvas.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00033 | $0.05659 |
| Opus 5 | $0.00016 | $0.02830 |
| Sonnet 5 | $0.00007 | $0.01132 |
| Haiku 4.5 | $0.00003 | $0.00566 |
Grade A, and why
lean-ux-canvas scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 562 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Purpose
Guide product managers through creating Jeff Gothelf's Lean UX Canvas (v2)—a one-page facilitation tool that frames work around a business problem to solve, not a solution to implement. Use this to align cross-functional teams around core assumptions, craft testable hypotheses, and ensure learning happens every sprint by exposing gaps in understanding (problem, users, value, and why the solution should work).
This is not a roadmap or feature list—it's an "insurance policy" that turns assumptions into experiments before committing to full development. The canvas shifts conversations from outputs to outcomes and ensures teams build the right thing, not just build things right.
Key Concepts
What is the Lean UX Canvas?
The Lean UX Canvas (v2) is a structured, one-page template designed to help teams frame their work around a business problem, not a solution. It aligns cross-functional teams on:
- What problem exists (and why it matters now)
- What measurable outcomes indicate success
- Who we're solving for
- What assumptions we're making
- What we need to learn first
- What experiments will test those assumptions
Origin: Created by Jeff Gothelf, author of Lean UX (O'Reilly, 2013). Version 2 was released to improve clarity around business vs. user outcomes.
Key Insight: The canvas acts like an insurance policy—it exposes gaps in understanding before you build, ensuring you don't waste sprints on the wrong thing.
Canvas Structure (8 Boxes)
Layout (3 columns × 3 rows):
┌─────────────────────┬──────────────┬───────────────────────┐
│ 1. Business Problem │ │ 2. Business Outcomes │
│ │ │ │
├─────────────────────┤ 5. Solutions ├───────────────────────┤
│ 3. Users │ (tall box │ 4. User Outcomes │
│ │ spanning │ & Benefits │
├─────────────────────┤ rows 1-2) ├───────────────────────┤
│ 6. Hypotheses │──────────────┤ 8. Least Work / │
│ │ 7. Learn │ Experiments │
│ │ First │ │
└─────────────────────┴──────────────┴───────────────────────┘
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 562 lines · 33 tokens per session scan A ab2c54cf8303
lean-ux-canvas is a skill published in the GitHub repository getcrew44/crew44 (359 stars, last pushed 2mo ago), licensed MIT. It adds 33 tokens to every session and 5,659 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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