flow-nexus-sandbox

Flow Nexus Sandboxes

Deploy and manage isolated execution environments.

Create Sandbox

mcp__flow -
  nexus__sandbox_create({
    template: 'node', // node, python, react, nextjs, vanilla, base
    name: 'my-sandbox',
    env_vars: {
      API_KEY: 'your_api_key',
      NODE_ENV: 'development',
    },
    timeout: 3600, // seconds
  });

Execute Code

mcp__flow -
  nexus__sandbox_execute({
    sandbox_id: 'sandbox_id',
    code: `
    console.log('Hello from sandbox!');
    const result = await fetch('https://api.example.com');
    return result.json();
  `,
    language: 'javascript',
    capture_output: true,
  });

Manage Sandboxes

// List all sandboxes
mcp__flow - nexus__sandbox_list({ status: 'running' });

// Get status
mcp__flow - nexus__sandbox_status({ sandbox_id: 'id' });

// Upload file
mcp__flow -
  nexus__sandbox_upload({
    sandbox_id: 'id',
    file_path: '/app/data.json',
    content: JSON.stringify(data),
  });

// Stop sandbox
mcp__flow - nexus__sandbox_stop({ sandbox_id: 'id' });

// Delete sandbox
mcp__flow - nexus__sandbox_delete({ sandbox_id: 'id' });

Templates

• node: Node.js environment
• python: Python 3.x environment
• react: React development setup
• nextjs: Next.js full-stack
• vanilla: Basic HTML/CSS/JS
• base: Minimal Linux environment

Common Patterns

// API development sandbox
mcp__flow -
  nexus__sandbox_create({
    template: 'node',
    name: 'api-dev',
    install_packages: ['express', 'cors', 'dotenv'],
    startup_script: 'npm run dev',
  });

// ML sandbox
mcp__flow -
  nexus__sandbox_create({
    template: 'python',
    name: 'ml-training',
    install_packages: ['numpy', 'pandas', 'scikit-learn'],
  });