Engineered for Privacy, Speed, & AI Autonomy
Every layer of OpenBoard is crafted to eliminate cloud subscription friction, protect your technical privacy, and empower autonomous AI coding assistants.
Data Sovereignty & Local Storage
100% Private, Air-Gapped & OfflineEmbedded SQLite Database
All whiteboards, shapes, connectors, and versions reside in ~/.openboard/openboard.db with Write-Ahead Logging (WAL) for sub-millisecond atomic transactions.
Zero Cloud Telemetry
No tracking cookies, no telemetry beacons, no analytics pings, and no mandatory cloud accounts. Complete privacy for proprietary enterprise architecture.
Full Board Lifecycle & Trash
Multi-board dashboard, favorites, instant duplication, debounced autosave, soft delete (Trash), and permanent purging directly in your local database.
AI Agent & Model Context Protocol
Semantic Diagramming for Autonomous Coding Assistants13 Semantic MCP Tools
High-level JSON-RPC 2.0 tools for creating boards, batch mutating shapes, drawing directional connectors, grouping frames, and inspecting canvas state.
Claude Code & Terminal Agents
Prompt Claude in your terminal to diagram microservices, auth flows, and database schemas with instant live streaming to your browser.
Cursor IDE & OpenCode Integration
Allow Cursor Composer and open-source coding agents to read your architecture and validate database schemas while you write code.
Visual Engine & Developer Experience
Infinite Vector Canvas with Zero BloatHeadless Canvas & Sub-5ms SVG Export
Inspect visual element hierarchies and render standalone pixel-perfect vector SVG snapshots directly from CLI scripts without headless browsers.
Real-Time SSE Live Projection
When viewing http://localhost:4747, agent mutations stream smoothly into your open browser tab in real time with zero perceptible lag.
Keyboard-First Flow
Press N for new whiteboards, / to focus search, Esc to deselect, Space+Drag to pan, and Cmd+D to duplicate shapes instantly.
Try All Features Instantly with npx
No account creation, no cloud setup, and zero credit card required.