Save current state before cleaning up duplicate MCP server files
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docs/VSCODE_TOOL_INTEGRATION.md
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# VS Code Tool Integration with Agent Coordinator
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## 🎉 Latest Update: Dynamic Tool Discovery (COMPLETED)
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**Date**: August 23, 2025
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**Status**: ✅ **COMPLETED** - Full dynamic tool discovery implementation
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### What Changed
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The Agent Coordinator has been refactored to eliminate all hardcoded tool lists and implement **fully dynamic tool discovery** following the MCP protocol specification.
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**Key Improvements**:
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- ✅ **No hardcoded tools**: All external server tools discovered via MCP `tools/list`
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- ✅ **Conditional VS Code tools**: Only included when VS Code functionality is available
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- ✅ **Real-time refresh**: `refresh_tools()` function to rediscover tools on demand
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- ✅ **Perfect MCP compliance**: Follows protocol specification exactly
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- ✅ **Better error handling**: Proper handling of both PIDs and Ports for server monitoring
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**Example Tool Discovery Results**:
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```
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Found 44 total tools:
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• Coordinator tools: 6 (register_agent, create_task, etc.)
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• External MCP tools: 26+ (context7, filesystem, memory, sequential thinking)
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• VS Code tools: 12 (when available)
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```
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### Benefits
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1. **MCP Protocol Compliance**: Perfect adherence to MCP specification
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2. **Flexibility**: New MCP servers can be added without code changes
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3. **Reliability**: Tools automatically discovered when servers restart
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4. **Performance**: Only available tools are included in routing
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5. **Debugging**: Clear visibility into which tools are available
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---
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## Overview
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This document outlines the implementation of VS Code's built-in tools as MCP (Model Context Protocol) tools within the Agent Coordinator system. This integration allows agents to access VS Code's native capabilities alongside external MCP servers through a unified coordination interface.
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## Architecture
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### Current State
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- Agent Coordinator acts as a unified MCP server
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- Proxies tools from external MCP servers (Context7, filesystem, memory, sequential thinking, etc.)
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- Manages task coordination, agent assignment, and cross-codebase workflows
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### Proposed Enhancement
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- Add VS Code Extension API tools as native MCP tools
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- Integrate with existing tool routing and coordination system
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- Maintain security and permission controls
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## Implementation Plan
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### Phase 1: Core VS Code Tool Provider
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#### 1.1 Create VSCodeToolProvider Module
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**File**: `lib/agent_coordinator/vscode_tool_provider.ex`
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**Core Tools to Implement**:
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- `vscode_read_file` - Read file contents using VS Code API
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- `vscode_write_file` - Write file contents
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- `vscode_create_file` - Create new files
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- `vscode_delete_file` - Delete files
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- `vscode_list_directory` - List directory contents
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- `vscode_get_workspace_folders` - Get workspace information
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- `vscode_run_command` - Execute VS Code commands
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- `vscode_get_active_editor` - Get current editor state
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- `vscode_set_editor_content` - Modify editor content
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- `vscode_get_selection` - Get current text selection
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- `vscode_set_selection` - Set text selection
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- `vscode_show_message` - Display messages to user
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#### 1.2 Tool Definitions
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Each tool will have:
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- MCP-compliant schema definition
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- Input validation
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- Error handling
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- Audit logging
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- Permission checking
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### Phase 2: Advanced Editor Operations
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#### 2.1 Language Services Integration
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- `vscode_get_diagnostics` - Get language server diagnostics
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- `vscode_format_document` - Format current document
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- `vscode_format_selection` - Format selected text
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- `vscode_find_references` - Find symbol references
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- `vscode_go_to_definition` - Navigate to definition
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- `vscode_rename_symbol` - Rename symbols
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- `vscode_code_actions` - Get available code actions
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#### 2.2 Search and Navigation
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- `vscode_find_in_files` - Search across workspace
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- `vscode_find_symbols` - Find symbols in workspace
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- `vscode_goto_line` - Navigate to specific line
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- `vscode_reveal_in_explorer` - Show file in explorer
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### Phase 3: Terminal and Process Management
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#### 3.1 Terminal Operations
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- `vscode_create_terminal` - Create new terminal
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- `vscode_send_to_terminal` - Send commands to terminal
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- `vscode_get_terminal_output` - Get terminal output (if possible)
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- `vscode_close_terminal` - Close terminal instances
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#### 3.2 Task and Process Management
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- `vscode_run_task` - Execute VS Code tasks
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- `vscode_get_tasks` - List available tasks
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- `vscode_debug_start` - Start debugging session
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- `vscode_debug_stop` - Stop debugging
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### Phase 4: Git and Version Control
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#### 4.1 Git Operations
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- `vscode_git_status` - Get git status
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- `vscode_git_commit` - Create commits
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- `vscode_git_push` - Push changes
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- `vscode_git_pull` - Pull changes
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- `vscode_git_branch` - Branch operations
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- `vscode_git_diff` - Get file differences
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### Phase 5: Extension and Settings Management
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#### 5.1 Configuration
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- `vscode_get_settings` - Get VS Code settings
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- `vscode_update_settings` - Update settings
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- `vscode_get_extensions` - List installed extensions
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- `vscode_install_extension` - Install extensions (if permitted)
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## Security and Safety
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### Permission Model
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```elixir
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defmodule AgentCoordinator.VSCodePermissions do
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@moduledoc """
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Manages permissions for VS Code tool access.
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"""
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# Permission levels:
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# :read_only - File reading, workspace inspection
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# :editor - Text editing, selections
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# :filesystem - File creation/deletion
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# :terminal - Terminal access
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# :git - Version control operations
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# :admin - Settings, extensions, system commands
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end
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```
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### Sandboxing
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- Restrict file operations to workspace folders only
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- Prevent access to system files outside workspace
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- Rate limiting for expensive operations
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- Command whitelist for `vscode_run_command`
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### Audit Logging
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- Log all VS Code tool calls with:
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- Timestamp
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- Agent ID
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- Tool name and parameters
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- Result summary
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- Permission level used
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## Integration Points
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### 1. UnifiedMCPServer Enhancement
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**File**: `lib/agent_coordinator/unified_mcp_server.ex`
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Add VS Code tools to the tool discovery and routing:
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```elixir
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defp get_all_tools(state) do
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# Existing external MCP server tools
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external_tools = get_external_tools(state)
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# New VS Code tools
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vscode_tools = VSCodeToolProvider.get_tools()
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external_tools ++ vscode_tools
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end
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defp route_tool_call(tool_name, args, context, state) do
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case tool_name do
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"vscode_" <> _rest ->
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VSCodeToolProvider.handle_tool_call(tool_name, args, context)
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_ ->
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# Route to external MCP servers
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route_to_external_server(tool_name, args, context, state)
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end
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end
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```
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### 2. Task Coordination
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VS Code tools will participate in the same task coordination system:
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- Task creation and assignment
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- File locking (prevent conflicts)
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- Cross-agent coordination
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- Priority management
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### 3. Agent Capabilities
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Agents can declare VS Code tool capabilities:
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```elixir
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capabilities: [
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"coding",
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"analysis",
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"vscode_editing",
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"vscode_terminal",
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"vscode_git"
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]
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```
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## Usage Examples
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### Example 1: File Analysis and Editing
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```json
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{
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"tool": "vscode_read_file",
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"args": {"path": "src/main.rs"}
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}
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// Agent reads file, analyzes it
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{
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"tool": "vscode_get_diagnostics",
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"args": {"file": "src/main.rs"}
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}
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// Agent gets compiler errors
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{
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"tool": "vscode_set_editor_content",
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"args": {
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"file": "src/main.rs",
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"content": "// Fixed code here",
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"range": {"start": 10, "end": 15}
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}
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}
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// Agent fixes the issues
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```
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### Example 2: Cross-Tool Workflow
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```json
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// 1. Agent searches documentation using Context7
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{"tool": "mcp_context7_get-library-docs", "args": {"libraryID": "/rust/std"}}
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// 2. Agent analyzes current code using VS Code
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{"tool": "vscode_get_active_editor", "args": {}}
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// 3. Agent applies documentation insights to code
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{"tool": "vscode_format_document", "args": {}}
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{"tool": "vscode_set_editor_content", "args": {...}}
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// 4. Agent commits changes using VS Code Git
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{"tool": "vscode_git_commit", "args": {"message": "Applied best practices from docs"}}
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```
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## Benefits
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1. **Unified Tool Access**: Agents access both external services and VS Code features through same interface
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2. **Enhanced Capabilities**: Complex workflows combining external data with direct IDE manipulation
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3. **Consistent Coordination**: Same task management for all tool types
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4. **Security**: Controlled access to powerful VS Code features
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5. **Extensibility**: Easy to add new VS Code capabilities as needs arise
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## Implementation Status & Updated Roadmap
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### ✅ **COMPLETED - Phase 1: Core VS Code Tool Provider (August 23, 2025)**
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**Successfully Implemented & Tested:**
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- ✅ VSCodeToolProvider module with 12 core tools
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- ✅ VSCodePermissions system with 6 permission levels
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- ✅ Integration with UnifiedMCPServer tool discovery and routing
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- ✅ Security controls: path sandboxing, command whitelisting, audit logging
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- ✅ Agent coordination integration (tasks, assignments, coordination)
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**Working Tools:**
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- ✅ File Operations: `vscode_read_file`, `vscode_write_file`, `vscode_create_file`, `vscode_delete_file`, `vscode_list_directory`
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- ✅ Editor Operations: `vscode_get_active_editor`, `vscode_set_editor_content`, `vscode_get_selection`, `vscode_set_selection`
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- ✅ Commands: `vscode_run_command`, `vscode_show_message`
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- ✅ Workspace: `vscode_get_workspace_folders`
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**Key Achievement:** VS Code tools now work seamlessly alongside external MCP servers through unified agent coordination!
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### 🔄 **CURRENT PRIORITY - Phase 1.5: VS Code Extension API Bridge**
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**Status:** Tools currently return placeholder data. Need to implement actual VS Code Extension API calls.
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**Implementation Steps:**
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1. **JavaScript Bridge Module** - Create communication layer between Elixir and VS Code Extension API
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2. **Real API Integration** - Replace placeholder responses with actual VS Code API calls
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3. **Error Handling** - Robust error handling for VS Code API failures
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4. **Testing** - Verify all tools work with real VS Code operations
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**Target Completion:** Next 2-3 days
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### 📅 **UPDATED IMPLEMENTATION TIMELINE**
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#### **Phase 2: Language Services & Advanced Editor Operations (Priority: High)**
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**Target:** Week of August 26, 2025
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**Tools to Implement:**
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- `vscode_get_diagnostics` - Get language server diagnostics
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- `vscode_format_document` - Format current document
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- `vscode_format_selection` - Format selected text
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- `vscode_find_references` - Find symbol references
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- `vscode_go_to_definition` - Navigate to definition
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- `vscode_rename_symbol` - Rename symbols across workspace
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- `vscode_code_actions` - Get available code actions
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- `vscode_apply_code_action` - Apply specific code action
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**Value:** Enables agents to perform intelligent code analysis and refactoring
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#### **Phase 3: Search, Navigation & Workspace Management (Priority: Medium)**
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**Target:** Week of September 2, 2025
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**Tools to Implement:**
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- `vscode_find_in_files` - Search across workspace with regex support
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- `vscode_find_symbols` - Find symbols in workspace
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- `vscode_goto_line` - Navigate to specific line/column
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- `vscode_reveal_in_explorer` - Show file in explorer
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- `vscode_open_folder` - Open workspace folder
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- `vscode_close_folder` - Close workspace folder
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- `vscode_switch_editor_tab` - Switch between open files
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**Value:** Enables agents to navigate and understand large codebases
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#### **Phase 4: Terminal & Process Management (Priority: Medium)**
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**Target:** Week of September 9, 2025
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**Tools to Implement:**
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- `vscode_create_terminal` - Create new terminal instance
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- `vscode_send_to_terminal` - Send commands to terminal
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- `vscode_get_terminal_output` - Get terminal output (if possible via API)
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- `vscode_close_terminal` - Close terminal instances
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- `vscode_run_task` - Execute VS Code tasks (build, test, etc.)
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- `vscode_get_tasks` - List available tasks
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- `vscode_stop_task` - Stop running task
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**Value:** Enables agents to manage build processes and execute commands
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#### **Phase 5: Git & Version Control Integration (Priority: High)**
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**Target:** Week of September 16, 2025
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**Tools to Implement:**
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- `vscode_git_status` - Get repository status
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- `vscode_git_commit` - Create commits with messages
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- `vscode_git_push` - Push changes to remote
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- `vscode_git_pull` - Pull changes from remote
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- `vscode_git_branch` - Branch operations (create, switch, delete)
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- `vscode_git_diff` - Get file differences
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- `vscode_git_stage` - Stage/unstage files
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- `vscode_git_blame` - Get blame information
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**Value:** Enables agents to manage version control workflows
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#### **Phase 6: Advanced Features & Extension Management (Priority: Low)**
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**Target:** Week of September 23, 2025
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**Tools to Implement:**
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- `vscode_get_settings` - Get VS Code settings
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- `vscode_update_settings` - Update settings
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- `vscode_get_extensions` - List installed extensions
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- `vscode_install_extension` - Install extensions (if permitted)
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- `vscode_debug_start` - Start debugging session
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- `vscode_debug_stop` - Stop debugging
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- `vscode_set_breakpoint` - Set/remove breakpoints
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**Value:** Complete IDE automation capabilities
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### 🚀 **Key Insights from Phase 1**
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1. **Integration Success**: The MCP tool routing system works perfectly for VS Code tools
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2. **Permission System**: Granular permissions are essential for security
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3. **Agent Coordination**: VS Code tools integrate seamlessly with task management
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4. **Unified Experience**: Agents can now use external services + VS Code through same interface
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### 🎯 **Next Immediate Actions**
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1. **Priority 1**: Implement proper agent identification system for multi-agent scenarios
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2. **Priority 2**: Implement real VS Code Extension API bridge (replace placeholders)
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3. **Priority 3**: Add Phase 2 language services tools
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4. **Priority 4**: Create comprehensive testing suite
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5. **Priority 5**: Document usage patterns and best practices
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### 🔧 **Critical Enhancement: Multi-Agent Identification System**
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**Problem:** Current system treats all GitHub Copilot instances as the same agent, causing conflicts in multi-agent scenarios.
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**Solution:** Implement unique agent identification with session-based tracking.
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**Implementation Requirements:**
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1. **Agent ID Parameter**: All tools must include an `agent_id` parameter
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2. **Session-Based Registration**: Each chat session/agent instance gets unique ID
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3. **Tool Schema Updates**: Add `agent_id` to all VS Code tool schemas
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4. **Auto-Registration**: System automatically creates unique agents per session
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5. **Agent Isolation**: Tasks, permissions, and state isolated per agent ID
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**Benefits:**
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- Multiple agents can work simultaneously without conflicts
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- Individual agent permissions and capabilities
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- Proper task assignment and coordination
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- Clear audit trails per agent
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### 📊 **Success Metrics**
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- **Tool Reliability**: >95% success rate for all VS Code tool calls
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- **Performance**: <500ms average response time for VS Code operations
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- **Security**: Zero security incidents with workspace sandboxing
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- **Integration**: All tools work seamlessly with agent coordination system
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- **Adoption**: Agents can complete full development workflows using only coordinated tools## Testing Strategy
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1. **Unit Tests**: Each VS Code tool function
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2. **Integration Tests**: Tool coordination and routing
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3. **Security Tests**: Permission enforcement and sandboxing
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4. **Performance Tests**: Rate limiting and resource usage
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5. **User Acceptance**: Real workflow testing with multiple agents
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## Future Enhancements
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- **Extension-specific Tools**: Tools for specific VS Code extensions
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- **Collaborative Features**: Multi-agent editing coordination
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- **AI-Enhanced Operations**: Intelligent code suggestions and fixes
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- **Remote Development**: Support for remote VS Code scenarios
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- **Custom Tool Creation**: Framework for users to create their own VS Code tools
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---
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## Notes
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This implementation transforms the Agent Coordinator from a simple MCP proxy into a comprehensive development environment orchestrator, enabling sophisticated AI-assisted development workflows.
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