Install Bun

Running OpenClaw with Bun Runtime

Bun is an alternative JavaScript runtime that offers faster startup times and improved performance compared to Node.js. OpenClaw supports Bun as an experimental runtime option.

Installing Bun

# macOS / Linux
curl -fsSL https://bun.sh/install | bash

# Windows (via PowerShell)
powershell -c "irm bun.sh/install.ps1 | iex"

# Verify installation
bun --version

Running OpenClaw with Bun

# Clone the OpenClaw repository
git clone https://github.com/openclaw/openclaw.git
cd openclaw

# Install dependencies with Bun
bun install

# Start with Bun runtime
bun run start

Performance Comparison

Current Limitations

• Some Node.js native modules may not be compatible with Bun
• WebSocket handling may differ slightly — test your messaging channels
• The Bun runtime is still evolving; check the compatibility matrix before production use