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LOCAL AI CANVAS · AGENT-DRIVABLE

A Lean Canvas with a real local AI coach. Your idea stays on your laptop.

Nine boxes. One page. Three offline agents that interrogate the canvas. And every AI tool you already use can read it.

Onboarding, Critic, and Explorer agents run in your browser or on your Ollama daemon. The DOM contract and .leancanvas file format are published — agents like Claude, Codex, or Cursor can read and operate your canvas without anyone else seeing it.

For founders pairing with AI — without handing over the idea.

Lo que hace un Lean Canvas en nueve cajas.

Un Lean Canvas es un modelo de negocio en una sola página — Problema, Solución, Propuesta de Valor Única, Canales, Segmentos de Clientes, Ventaja Injusta, Métricas Clave, Estructura de Costes, Flujos de Ingresos. Reemplaza un plan de negocio de 30 páginas con las nueve preguntas que un founder realmente tiene que responder para saber si la idea funciona.

Totally Lean ejecuta el canvas en tu navegador. Sin cuenta. Sin servidor. Los datos viven en tu almacenamiento local. Tres agentes de IA locales te ayudan a rellenarlo; un generador de pitch con voz de 90 segundos convierte el canvas en algo que puedes pasarle a un desconocido.

Cuando haces clic en Empezar, estás editando en segundos: sin registro, sin email, sin workspace de equipo. Comparte por URL cuando quieras meter a alguien. Exporta JSON cuando quieras una copia.

Otras formas en que los founders enmarcan el mismo canvas.

Las mismas nueve cajas, enmarcadas para momentos distintos. Elige la que encaja con donde estás ahora mismo.

Frequently asked

Can Claude, Codex, or Cursor operate this canvas for me?
Yes. Totally Lean publishes an operating manual for AI agents at /agent.txt — a public document describing the canvas data model, stable DOM selectors, keyboard shortcuts, and rules agents should follow. Any browser-driving agent (Claude for Chrome, Codex Chrome extension, Operator-class tools) can read the manual and operate the canvas through documented affordances. The agent talks to your browser, not to us — your canvas never reaches a server. The .leancanvas JSON file format gives agents a structured read/write channel as well.
What do the three local AI agents do? Why three?
Three different conversations help at different stages of writing a canvas. Onboarding interviews you when the canvas is blank. Critic challenges what you've written — weak Problem statements, vague Customer Segments, hand-wavy Unfair Advantages. Explorer brainstorms adjacencies you haven't considered. Each holds a structured written conversation about the canvas; none overwrites it directly. All three run on your machine — WebGPU in your browser or your own Ollama daemon.
Is the AI really local? Where does the model actually run?
Two paths. (1) WebGPU — model weights download once and cache in your browser; inference runs on your GPU. (2) Ollama — your own daemon running locally; the browser talks to it via localhost. Neither sends canvas content to any server we operate. The default behavior is fully offline.
Can I read or write the .leancanvas file with my own tools?
Yes. The format is documented at /file-format with a JSON Schema (Draft 2020-12). Open it in a text editor, parse it with any JSON library, edit it programmatically — versioned, stable, agent-friendly. The format is the same shape the editor uses internally; no proprietary lock-in layer between what you see and what gets exported. If Totally Lean disappears, your canvases stay readable forever.

A Lean Canvas with a real local AI coach. Your idea stays on your laptop.

Sin registro, sin servidor, sin email. Abre el editor y empieza a esbozar.