Your agent. Your canvas.

Enable your own agents to draw beautiful canvases.

Give the agent you already use the skills to turn ideas into diagrams, boards and wireframes. Every shape stays editable. Every layout can be measured and improved.

blankpaper-agentExplore the public repository Latest release & notes ↗

Claude CodeAnthropic
CodexOpenAI
CursorEditor + agent
OpenCodeYour choice of model
Gemini CLIGoogle
Kimi CodeMoonshot AI
DeepSeekThrough OpenCode

One prompt to get started

Give your agent a canvas.

Copy this prompt into your agent. It finds the latest stable release, installs the drawing skills and CLI, then creates a small canvas to check the setup.

Install or update Blankpaper

Install or update Blankpaper's drawing skills and CLI for this agent from https://github.com/MrPolyGlot42/blankpaper-agent.
Resolve the latest stable release using https://github.com/MrPolyGlot42/blankpaper-agent/releases/latest (or the repository's GitHub releases API). Use its published semver tag, not main or a prerelease. Clone or fetch into a persistent directory without changing unrelated files. Resolve the release tag to its full commit SHA, check out that exact commit, and verify git rev-parse HEAD. If the release cannot be verified, stop and explain; do not guess a version. Read that release's README.md and install.mjs, check the runtime requirements, and confirm release.json agrees with the tag before running its integrity-checking installer.
Select this agent with --agent (claude, codex, cursor, opencode, gemini, kimi, or agents; DeepSeek through OpenCode uses deepseek). Preserve my model/provider settings and unrelated skills. If Blankpaper is already installed at this release, verify it instead of reinstalling. To update an older installation, identify its managed skill directories and check for customizations or symlinks. Report conflicts instead of overwriting them. Back up only confirmed, unmodified Blankpaper skill directories, keep the previous versioned runtime for rollback, and restore those backups if installation or validation fails.
Run node install.mjs --agent <this-agent> as documented by the selected release. Use the installed skill's scripts/bp.mjs wrapper to draw Browser → API → Database as an editable local request-path.excalidraw with --score --json, choosing a new filename if it exists. Check the readability report and improve the layout where needed. Report the installed version, pinned commit, file path and score. Local drawing needs no account. Do not sign in or upload a canvas unless I ask. Tell me to start a new agent session to load the skills.
When I ask to update later, repeat release discovery and the same backup, pinning and validation steps. Do not silently update on every drawing.

Use a terminal-capable agent with Git, Node.js and npm. The prompt checks the selected release’s requirements. Start a new agent session after setup.

Beauty you can reason about

Good layouts have measurable qualities.

Blankpaper scores crossings, label readability, spacing, flow and how well a drawing fits on screen. Your agent can use that feedback to revise a canvas, instead of stopping at the first attempt.

Clear connections

Fewer crossings and arrows that avoid unrelated shapes.

Room to read

Labels with space to breathe, at a useful viewing size.

A coherent flow

Connections that follow the story your diagram tells.

Our scoring draws on Mooney et al.’s study of graph-drawing metrics and Purchase’s research on aesthetics and understanding, with additional checks for labels and containers. These are practical measures of readability; the final visual judgment stays with you.

Draw locally, for free.

No Blankpaper account or API key is needed for local drawing and scoring. Open the result in Blankpaper or Excalidraw and keep editing. Optional cloud publishing needs Blankpaper Pro and a separate sign-in.

Stay current. Stay in control.

The same prompt handles setup and future updates. It resolves the latest stable release, pins its exact commit and preserves existing skills. Backups and validation make updates deliberate, with the previous runtime kept for rollback.