PHASE2.md

s# Phase 2 - Execution Layer Complete

Tools Implemented

1. Browser Tool

• Navigate to URLs
• Click elements
• Type text into inputs
• Extract content from selectors
• Take screenshots
• Headless Chromium via Playwright

2. Terminal Tool

• Execute shell commands
• Security whitelist for safe commands
• Blocked dangerous patterns (rm -rf, sudo, etc)
• 30-second timeout
• Working directory support

3. File Tool

• Read files
• Write files
• Append to files
• Delete files
• List directories
• Create directories
• Get file stats
• Path traversal protection

Tool Registry

Central registry for managing all tools:

• Register new tools
• List available tools
• Execute tools with permission checks
• Validate parameters
• Audit logging for all executions

Security Features

Permission System

• Master users have all permissions
• Tool-specific permissions
• Execution context tracking
• User and task association

Safety Measures

• Command whitelisting (Terminal)
• Path traversal prevention (File)
• Timeout limits
• Parameter validation
• Comprehensive audit logging

Brain Core Integration

Brain Core now:

• Parses step actions to extract tool calls
• Executes tools through registry
• Handles tool results
• Logs all tool executions
• Manages failures and retries

API Endpoints

New endpoints:

• GET /api/tools - List available tools
• POST /api/tools/execute - Execute a tool

Step Action Format

Tools are invoked using this format:

tool:action param1=value1 param2=value2

Examples:

• browser:navigate url=https://example.com
• terminal:command command="ls -la"
• file:read path=config.json

Test Coverage

35 tests passing:

• Browser tool validation
• Terminal tool execution and security
• File tool operations
• Tool registry management
• Permission checks
• Brain core integration

Next: Phase 3 - Memory System

• Vector embeddings
• Semantic search
• Memory storage and retrieval
• Context management