# TASK_52: km_workflow_designer - Visual Workflow Creation & Drag-and-Drop Interface
**Created By**: Agent_ADDER+ (Advanced Strategic Extension) | **Priority**: HIGH | **Duration**: 6 hours
**Technique Focus**: Visual Design Patterns + FastMCP Integration + Design by Contract + Type Safety + JSON-RPC Protocol
**Size Constraint**: Target <250 lines/module, Max 400 if splitting awkward
## 🚦 Status & Assignment
**Status**: COMPLETED ✅
**Assigned**: Agent_ADDER+ (Advanced Strategic Extension)
**Dependencies**: Macro creation (TASK_10), Action sequence builder (TASK_29), Template system (TASK_30) - All completed
**Completed**: 2025-07-04 by Agent_ADDER+
**Blocking**: Visual workflow automation and drag-and-drop macro construction for Claude Desktop - NOW UNBLOCKED
## 📖 Required Reading (Complete before starting)
- [x] **Macro Creation**: development/tasks/TASK_10.md - Macro creation engine patterns ✅ COMPLETED
- [x] **Action Sequence Builder**: development/tasks/TASK_29.md - Drag-and-drop action composition ✅ COMPLETED
- [x] **Template System**: development/tasks/TASK_30.md - Reusable macro templates and patterns ✅ COMPLETED
- [x] **FastMCP Protocol**: development/protocols/FASTMCP_PYTHON_PROTOCOL.md - MCP tool implementation standards ✅ COMPLETED
- [x] **Core Types**: src/core/types.py - Type definitions and validation patterns ✅ COMPLETED
## 🎯 Problem Analysis
**Classification**: Visual Interface & Workflow Design Gap
**Gap Identified**: No visual workflow designer, drag-and-drop interface, or interactive macro building for Claude Desktop interaction
**Impact**: Cannot create complex workflows visually, limiting accessibility and reducing automation development efficiency
<thinking>
Root Cause Analysis:
1. Current platform lacks visual workflow design capabilities
2. No drag-and-drop interface for macro construction
3. Missing visual representation of automation flows
4. Cannot export/import visual workflow designs
5. No integration with Claude Desktop for visual automation building
6. Essential for user-friendly automation creation
7. Must integrate with existing macro creation and template systems
8. FastMCP tools needed for Claude Desktop JSON-RPC interaction
</thinking>
## ✅ Implementation Subtasks (Sequential completion)
### Phase 1: Architecture & Design ✅ COMPLETED
- [x] **Workflow types**: Define branded types for visual workflows, components, and connections ✅ COMPLETED
- [x] **Visual design patterns**: Drag-and-drop interface patterns and component structures ✅ COMPLETED
- [x] **FastMCP integration**: Tool definitions for Claude Desktop workflow interaction ✅ COMPLETED
### Phase 2: Core Workflow Designer ✅ COMPLETED
- [x] **Visual composer**: Visual workflow composition engine with drag-and-drop support ✅ COMPLETED
- [x] **Component library**: Reusable visual components for common automation patterns ✅ COMPLETED
- [x] **Connection system**: Visual flow connections and data flow management ✅ COMPLETED
- [x] **Canvas manager**: Interactive canvas for workflow design and editing ✅ COMPLETED
### Phase 3: MCP Tools Implementation ✅ COMPLETED
- [x] **km_create_visual_workflow**: Create new visual workflow with components ✅ COMPLETED
- [x] **km_add_workflow_component**: Add components to visual workflows ✅ COMPLETED
- [x] **km_connect_workflow_nodes**: Connect workflow nodes and define data flow ✅ COMPLETED
- [x] **km_edit_workflow_component**: Edit workflow components and properties ✅ COMPLETED
- [x] **km_export_visual_workflow**: Export workflows to executable macro format ✅ COMPLETED
- [x] **km_get_workflow_templates**: Get available workflow templates ✅ COMPLETED
- [x] **km_validate_workflow**: Validate workflow logic and connections ✅ COMPLETED
### Phase 4: Template & Integration ✅ COMPLETED
- [x] **Template integration**: Visual templates for common workflow patterns ✅ COMPLETED
- [x] **Component templates**: Pre-configured component library with 30+ components ✅ COMPLETED
- [x] **Validation system**: Validate workflow logic and component connections ✅ COMPLETED
- [x] **FastMCP compliance**: Complete JSON-RPC protocol integration ✅ COMPLETED
### Phase 5: Advanced Features & Testing ✅ COMPLETED
- [x] **Comprehensive testing**: Property-based testing and contract verification ✅ COMPLETED
- [x] **Performance testing**: Sub-second response time validation ✅ COMPLETED
- [x] **Integration testing**: MCP tools and visual composer testing ✅ COMPLETED
- [x] **Type safety validation**: Complete contract compliance testing ✅ COMPLETED
## 🔧 Implementation Files & Specifications
```
src/server/tools/workflow_designer_tools.py # Main workflow designer MCP tools
src/core/visual_design.py # Visual design type definitions
src/workflow/visual_composer.py # Visual workflow composition engine
src/workflow/component_library.py # Reusable visual components
src/workflow/canvas_manager.py # Interactive canvas management
src/workflow/connection_system.py # Visual flow connections
src/workflow/template_manager.py # Visual workflow templates
src/workflow/export_system.py # Workflow export and conversion
tests/tools/test_workflow_designer_tools.py # Unit and integration tests
tests/property_tests/test_visual_workflows.py # Property-based workflow validation
```
### km_create_visual_workflow Tool Specification
```python
@mcp.tool()
async def km_create_visual_workflow(
name: Annotated[str, Field(description="Workflow name", min_length=1, max_length=100)],
description: Annotated[str, Field(description="Workflow description", max_length=500)] = "",
template_id: Annotated[Optional[str], Field(description="Optional template to start from")] = None,
canvas_size: Annotated[Dict[str, int], Field(description="Canvas dimensions")] = {"width": 1200, "height": 800},
auto_layout: Annotated[bool, Field(description="Enable automatic component layout")] = True,
group_id: Annotated[Optional[str], Field(description="Target macro group UUID")] = None,
ctx: Context = None
) -> Dict[str, Any]:
"""
Create a new visual workflow with interactive canvas for drag-and-drop macro building.
FastMCP Tool for Claude Desktop integration with JSON-RPC protocol.
Creates visual workflow interface that can be manipulated through subsequent MCP calls.
Returns workflow ID, canvas configuration, and available components.
"""
```
### km_add_workflow_component Tool Specification
```python
@mcp.tool()
async def km_add_workflow_component(
workflow_id: Annotated[str, Field(description="Target workflow UUID")],
component_type: Annotated[str, Field(description="Component type (action|condition|trigger|group)")],
position: Annotated[Dict[str, int], Field(description="Canvas position coordinates")],
properties: Annotated[Dict[str, Any], Field(description="Component configuration")] = {},
auto_connect: Annotated[bool, Field(description="Auto-connect to previous component")] = False,
parent_id: Annotated[Optional[str], Field(description="Parent component for nesting")] = None,
ctx: Context = None
) -> Dict[str, Any]:
"""
Add a new component to visual workflow at specified position.
FastMCP Tool for adding visual components that Claude Desktop can manipulate.
Supports actions, conditions, triggers, and grouped components.
Returns component ID, visual representation, and connection points.
"""
```
### km_connect_workflow_nodes Tool Specification
```python
@mcp.tool()
async def km_connect_workflow_nodes(
workflow_id: Annotated[str, Field(description="Target workflow UUID")],
source_component: Annotated[str, Field(description="Source component UUID")],
target_component: Annotated[str, Field(description="Target component UUID")],
connection_type: Annotated[str, Field(description="Connection type (sequence|condition|data|trigger)")] = "sequence",
connection_config: Annotated[Dict[str, Any], Field(description="Connection configuration")] = {},
validate_flow: Annotated[bool, Field(description="Validate workflow logic after connection")] = True,
ctx: Context = None
) -> Dict[str, Any]:
"""
Connect workflow components to define execution flow and data dependencies.
FastMCP Tool for creating logical connections between workflow components.
Validates connection compatibility and workflow logic.
Returns connection ID, visual path, and validation results.
"""
```
### km_edit_workflow_component Tool Specification
```python
@mcp.tool()
async def km_edit_workflow_component(
workflow_id: Annotated[str, Field(description="Target workflow UUID")],
component_id: Annotated[str, Field(description="Component UUID to edit")],
properties: Annotated[Dict[str, Any], Field(description="Updated component properties")],
position: Annotated[Optional[Dict[str, int]], Field(description="New position coordinates")] = None,
validate_changes: Annotated[bool, Field(description="Validate component after changes")] = True,
ctx: Context = None
) -> Dict[str, Any]:
"""
Edit workflow component properties and configuration.
FastMCP Tool for modifying visual workflow components through Claude Desktop.
Validates changes and updates visual representation.
Returns updated component configuration and validation status.
"""
```
### km_export_visual_workflow Tool Specification
```python
@mcp.tool()
async def km_export_visual_workflow(
workflow_id: Annotated[str, Field(description="Workflow UUID to export")],
export_format: Annotated[str, Field(description="Export format (macro|template|json|xml)")] = "macro",
target_group: Annotated[Optional[str], Field(description="Target macro group for export")] = None,
include_metadata: Annotated[bool, Field(description="Include workflow design metadata")] = True,
validate_before_export: Annotated[bool, Field(description="Validate workflow before export")] = True,
enable_on_creation: Annotated[bool, Field(description="Enable macro immediately after creation")] = False,
ctx: Context = None
) -> Dict[str, Any]:
"""
Export visual workflow to executable macro or template format.
FastMCP Tool for converting visual workflows to Keyboard Maestro macros.
Validates workflow logic and generates optimized macro structures.
Returns export results, macro ID, and validation report.
"""
```
### km_get_workflow_templates Tool Specification
```python
@mcp.tool()
async def km_get_workflow_templates(
category: Annotated[Optional[str], Field(description="Template category filter")] = None,
complexity: Annotated[Optional[str], Field(description="Complexity level (simple|intermediate|advanced)")] = None,
tags: Annotated[Optional[List[str]], Field(description="Template tags for filtering")] = None,
include_custom: Annotated[bool, Field(description="Include user-created templates")] = True,
ctx: Context = None
) -> Dict[str, Any]:
"""
Get available visual workflow templates for quick workflow creation.
FastMCP Tool for retrieving workflow templates that Claude Desktop can use.
Provides categorized templates with preview and complexity information.
Returns template list with metadata, previews, and usage statistics.
"""
```
### km_validate_workflow Tool Specification
```python
@mcp.tool()
async def km_validate_workflow(
workflow_id: Annotated[str, Field(description="Workflow UUID to validate")],
validation_level: Annotated[str, Field(description="Validation depth (basic|full|strict)")] = "full",
check_performance: Annotated[bool, Field(description="Include performance analysis")] = True,
suggest_optimizations: Annotated[bool, Field(description="Provide optimization suggestions")] = True,
ctx: Context = None
) -> Dict[str, Any]:
"""
Validate visual workflow logic, connections, and performance characteristics.
FastMCP Tool for comprehensive workflow validation through Claude Desktop.
Checks logic flow, component compatibility, and potential issues.
Returns validation report with errors, warnings, and optimization suggestions.
"""
```
## 🏗️ Modularity Strategy
**Component Organization:**
- **Core Engine** (<250 lines): Visual workflow management and canvas operations
- **Component Library** (<250 lines): Reusable visual components and templates
- **Connection System** (<250 lines): Flow connections and data validation
- **Export Engine** (<250 lines): Workflow to macro conversion
- **MCP Tools Module** (<400 lines): FastMCP tool implementations for Claude Desktop
**Performance Optimization:**
- Canvas virtualization for large workflows
- Component caching for frequent operations
- Incremental validation for real-time feedback
- Efficient JSON-RPC responses for Claude Desktop
## ✅ Success Criteria
- Visual workflow designer accessible through Claude Desktop MCP interface
- Drag-and-drop component creation and connection via MCP tools
- Template system integration with existing macro framework
- Export workflows to executable Keyboard Maestro macros
- All MCP tools follow FastMCP protocol for JSON-RPC communication
- Comprehensive validation and error handling
- Performance: Sub-second response times for all workflow operations
- Testing: >95% code coverage with property-based validation
- Documentation: Complete user guide for visual workflow creation
## 🔒 Security & Validation
- Input sanitization for all workflow component data
- Validation of workflow logic and component compatibility
- Secure export to prevent malicious macro generation
- Access control for workflow modification operations
- Audit logging for all workflow design operations
## 📊 Integration Points
- **Existing Macro Engine**: Seamless integration with km_create_macro and km_add_action
- **Template System**: Integration with km_macro_template_system for reusable patterns
- **Action Sequence Builder**: Leverage existing action composition capabilities
- **FastMCP Framework**: Full compliance with FastMCP for Claude Desktop interaction
- **Testing Framework**: Integration with existing property-based testing infrastructure
