RewindMCP

# New OCR Tools Implementation Summary ## Overview We've successfully added 4 new MCP tools to provide comprehensive OCR content access from time windows, addressing the gap where users could only search for specific keywords but not pull all OCR content from a time frame. The tools now return actual OCR text content instead of just metadata about frames and nodes. ## New Tools Added ### 1. `get_screen_ocr_relative` **Purpose**: Get all screen OCR content from a relative time period **Parameters**: - `time_period` (required): Time period like '1hour', '30minutes', '1day', '1week' - `application` (optional): Filter results by application name **Use Case**: "Show me all screen content from the last 2 hours" or "Show me all Chrome content from the last day" ### 2. `get_screen_ocr_absolute` **Purpose**: Get all screen OCR content from a specific time window **Parameters**: - `from` (required): Start time in ISO format - `to` (required): End time in ISO format - `timezone` (optional): Timezone if not specified in from/to times - `application` (optional): Filter results by application name **Use Case**: "Show me all screen content from my 3 PM meeting" or "Show me all Slack content from yesterday afternoon" ### 3. `get_ocr_applications_relative` **Purpose**: Discover all applications that have OCR data from a relative time period **Parameters**: - `time_period` (required): Time period like '1hour', '30minutes', '1day', '1week' **Use Case**: "What applications were active in the last 4 hours?" - helps users discover what apps to filter by ### 4. `get_ocr_applications_absolute` **Purpose**: Discover all applications that have OCR data from a specific time window **Parameters**: - `from` (required): Start time in ISO format - `to` (required): End time in ISO format - `timezone` (optional): Timezone if not specified in from/to times **Use Case**: "What applications were active during my meeting from 2-3 PM?" - helps users discover what apps to filter by ## Workflow Integration The tools work together in a natural workflow: 1. **Discovery Phase**: Use `get_ocr_applications_*` to see what applications were active ``` get_ocr_applications_relative: "2hours" → Returns: Chrome, Slack, VS Code, Zoom, etc. ``` 2. **Focused Retrieval**: Use `get_screen_ocr_*` with application filter to get specific content ``` get_screen_ocr_relative: time_period="2hours", application="Chrome" → Returns: All Chrome OCR content from last 2 hours ``` 3. **Keyword Search**: Use existing `search_screen_ocr` for specific content within results ``` search_screen_ocr: keyword="meeting notes", application="Slack" → Returns: Specific matches for "meeting notes" in Slack ``` ## Key Features ### Application Filtering Both OCR content tools support optional application filtering: - Without filter: Returns all OCR content from all applications - With filter: Returns only OCR content from the specified application - Case-insensitive matching (e.g., "chrome" matches "Google Chrome") ### Rich Metadata The application discovery tools provide: - Frame count per application - OCR node count (activity level) - Number of unique windows - Time range when application was active - Sorted by activity level (most active first) ### Consistent Time Handling All tools use the same smart datetime parsing: - Support for relative time periods ("2hours", "1day", etc.) - Support for absolute time ranges with timezone handling - Consistent with existing transcript tools ## Implementation Details ### Database Integration - Added new `get_screen_ocr_text_absolute()` and `get_screen_ocr_text_relative()` methods to RewindDB - Uses `searchRanking_content` table to retrieve actual OCR text content (c0 column) - Efficient querying with proper time range filtering and text extraction ### Response Format - OCR content tools: Shows actual OCR text content grouped by frame, not just metadata - Application discovery tools: Shows text-based statistics (text records, average text length) - Hides technical concepts like "nodes" from users - focuses on readable content - Consistent error handling and user guidance ### Error Handling - Validates time period formats - Provides helpful suggestions when no data found - Graceful handling of missing applications or time ranges ## Benefits 1. **Complete OCR Access**: Users can now pull all screen content from any time window 2. **Application Discovery**: Easy way to see what apps were active during specific periods 3. **Flexible Filtering**: Can focus on specific applications after discovery 4. **Meeting Analysis**: Perfect for reviewing what was displayed during meetings 5. **Work Session Review**: Analyze screen activity during work periods 6. **Seamless Integration**: Works with existing search and transcript tools This implementation fills the critical gap in MCP OCR functionality while maintaining consistency with existing tools and providing a natural workflow for users.