The Notion Workspace Sync Engine establishes bidirectional synchronization between Notion databases and external project management tools using the Notion API v1. It polls Notion databases via the /databases/{id}/query endpoint with filter and sort parameters to detect changes, comparing timestamps against a local state cache for incremental processing. Property mapping is configured through a declarative schema that translates Notion select/multi-select properties to Jira issue types and labels, Notion date ranges to GitHub milestone dates, and Notion relation properties to Linear issue parent-child hierarchies. The skill handles rich text conversion between Notion blocks (paragraphs, headings, code, callouts) and Markdown/HTML formats used by target platforms. Conflict resolution uses a last-writer-wins strategy with configurable field-level priority rules—for example, status changes in Jira always win, but description edits in Notion take precedence. Webhook endpoints receive real-time Notion database change events for near-instant propagation. The sync engine maintains an audit log of all operations, supports dry-run mode for previewing changes, and includes rollback capability to revert the last N sync operations.