OB
OpenBoard
FEATURES // OVERVIEW//Complete System Capabilities

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 & Offline
01 // LOCAL-FIRST
Local-First

Embedded SQLite Database

All whiteboards, shapes, connectors, and versions reside in ~/.openboard/openboard.db with Write-Ahead Logging (WAL) for sub-millisecond atomic transactions.

02 // AIR-GAPPED
Air-Gapped

Zero Cloud Telemetry

No tracking cookies, no telemetry beacons, no analytics pings, and no mandatory cloud accounts. Complete privacy for proprietary enterprise architecture.

03 // RELATIONAL
Relational

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 Assistants
01 // STDIO + SSE
stdio + SSE

13 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.

02 // CLI NATIVE
CLI Native

Claude Code & Terminal Agents

Prompt Claude in your terminal to diagram microservices, auth flows, and database schemas with instant live streaming to your browser.

03 // IDE SUPPORT
IDE Support

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 Bloat
01 // SUB-5MS ENGINE
Sub-5ms Engine

Headless Canvas & Sub-5ms SVG Export

Inspect visual element hierarchies and render standalone pixel-perfect vector SVG snapshots directly from CLI scripts without headless browsers.

02 // LIVE SYNC
Live Sync

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.

03 // SHORTCUTS
Shortcuts

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.

Instant Local Launch

Try All Features Instantly with npx

No account creation, no cloud setup, and zero credit card required.

terminal ~ start
$npx openboard-app start
Zero install, launches in browser instantlyLocal SQLite: ~/.openboard/openboard.db