7.4 KiB
7.4 KiB
Real-Time Form Discovery Updates Summary
Overview
The LiveKit agent has been completely updated to use REAL-TIME ONLY form field discovery. The system now NEVER uses cached selectors and always gets fresh field selectors using MCP tools on every request.
Key Changes Made
🔄 Core Philosophy Change
- FROM: Cache-first approach with fallback to discovery
- TO: Real-time only approach with NO cache dependency
🚫 Eliminated Cache Dependencies
- Removed: All cached selector lookups from
fill_field_by_name()
- Removed: Fuzzy matching against cached fields
- Removed: Auto-detection cache refresh
- Added: Pure real-time discovery pipeline
Updated Methods
1. fill_field_by_name()
- Complete Rewrite
Before: Cache → Refresh → Fuzzy Match → Discovery
# OLD: Cache-first approach
if field_name_lower in self.cached_input_fields:
# Use cached selector
After: Real-time only discovery
# NEW: Real-time only approach
discovery_result = await self._discover_form_fields_dynamically(field_name, value)
enhanced_result = await self._enhanced_field_detection_with_retry(field_name, value)
content_result = await self._analyze_page_content_for_field(field_name, value)
direct_result = await self._direct_mcp_element_search(field_name, value)
2. New Real-Time Methods Added
_direct_mcp_element_search()
- Purpose: Exhaustive real-time element search
- Uses:
chrome_get_interactive_elements
for ALL elements - Features: Very flexible matching, common selector generation
_is_very_flexible_match()
- Purpose: Ultra-flexible field matching for difficult cases
- Features: Partial text matching, type-based matching
_generate_common_selectors()
- Purpose: Generate intelligent CSS selectors in real-time
- Features: Field name variations, type-specific patterns
3. Enhanced LiveKit Agent Functions
New Function Tools:
fill_field_realtime_only()
- Guaranteed real-time discoveryget_realtime_form_fields()
- Live form field discovery- Enhanced
discover_and_fill_field()
- Pure real-time approach
Real-Time Discovery Pipeline
Step 1: Dynamic MCP Discovery
# Uses chrome_get_interactive_elements and chrome_get_content_web_form
discovery_result = await self._discover_form_fields_dynamically(field_name, value)
Step 2: Enhanced Detection with Retry
# Multiple retry attempts with increasing flexibility
enhanced_result = await self._enhanced_field_detection_with_retry(field_name, value, max_retries=3)
Step 3: Content Analysis
# Analyzes page content for field patterns
content_result = await self._analyze_page_content_for_field(field_name, value)
Step 4: Direct MCP Search
# Exhaustive search through ALL page elements
direct_result = await self._direct_mcp_element_search(field_name, value)
MCP Tools Used
Primary Tools:
- chrome_get_interactive_elements - Gets current form elements
- chrome_get_content_web_form - Analyzes form structure
- chrome_get_web_content - Content analysis
- chrome_fill_or_select - Fills discovered fields
Discovery Strategy:
- Real-time element discovery using MCP tools
- Live selector generation based on current attributes
- Immediate validation of generated selectors
- Dynamic field matching with flexible criteria
Voice Command Processing
Natural Language Examples:
"fill email with john@example.com"
"enter password secret123"
"type hello in search box"
"add user name John Smith"
Processing Flow:
- Parse voice command → Extract field name and value
- Real-time discovery → Use MCP tools to find current elements
- Match and fill → Generate selector and fill field
- Provide feedback → Report success/failure with method used
Benefits of Real-Time Approach
🎯 Accuracy
- Always current - reflects actual page state
- No stale selectors - eliminates cached failures
- Dynamic adaptation - handles page changes
🔄 Reliability
- Fresh discovery - every request gets new selectors
- Multiple strategies - comprehensive fallback methods
- Live validation - selectors tested before use
🌐 Compatibility
- Works on any site - no pre-configuration needed
- Handles dynamic content - adapts to JavaScript forms
- Future-proof - works with new web technologies
Testing
New Test Suite: test_realtime_form_discovery.py
- Real-time discovery on Google and GitHub
- Direct MCP tool testing
- Field matching algorithms validation
- Cross-website compatibility testing
Test Coverage:
- Dynamic field discovery functionality
- Retry mechanism with multiple strategies
- Very flexible matching algorithms
- MCP tool integration
Performance Considerations
Trade-offs:
- Slightly slower than cached approach (by design)
- Much more reliable than cached selectors
- Eliminates cache management overhead
- Prevents stale selector issues
Optimization:
- Early termination on first successful match
- Parallel strategy execution where possible
- Intelligent selector prioritization
Migration Impact
For Users:
- No changes required - same voice commands work
- Better reliability - fewer "field not found" errors
- Works on more sites - adapts to any website
For Developers:
- No API changes - same function signatures
- Enhanced logging - better debugging information
- Simplified maintenance - no cache management
Configuration
Real-Time Settings:
max_retries = 3 # Number of retry attempts
retry_strategies = [
"interactive_elements",
"form_content",
"content_analysis",
"direct_search"
]
MCP Tool Requirements:
chrome_get_interactive_elements
- Requiredchrome_get_content_web_form
- Requiredchrome_get_web_content
- Requiredchrome_fill_or_select
- Required
Error Handling
Graceful Degradation:
- Interactive elements discovery
- Form content analysis
- Content analysis
- Direct search with flexible matching
Detailed Logging:
- Each strategy attempt logged
- Selector generation tracked
- Match criteria recorded
- Failure reasons documented
Future Enhancements
Planned Improvements:
- Visual element detection using screenshots
- Machine learning field recognition
- Performance optimization for faster discovery
- Advanced context awareness
Files Updated
Core Files:
- mcp_chrome_client.py - Complete real-time discovery system
- livekit_agent.py - New real-time function tools
- test_realtime_form_discovery.py - Comprehensive test suite
- REALTIME_FORM_DISCOVERY.md - Complete documentation
Documentation:
- REALTIME_UPDATES_SUMMARY.md - This summary
- DYNAMIC_FORM_FILLING.md - Updated with real-time focus
Conclusion
The LiveKit agent now features a completely real-time form discovery system that:
✅ NEVER uses cached selectors
✅ Always gets fresh selectors using MCP tools
✅ Adapts to any website dynamically
✅ Provides multiple fallback strategies
✅ Maintains full backward compatibility
✅ Offers enhanced reliability and accuracy
This ensures the agent works reliably across all websites with dynamic content, providing users with a robust and adaptive form-filling experience.