{"message":"v7.5-main: Simplified Layout Builder API with Content Editing","version":"7.5.0","layouts":{"backend":["L02","L25","L29"],"frontend":{"hero":["H1","H1s","H2","H3"],"content":["C1","C2","C3","C4"],"visual":["V1","V2","V3","V4"],"image":["I1","I2","I3","I4"],"split":["S3","S4"],"blank":["B1"]}},"philosophy":"Text Service owns content creation, Layout Builder provides structure","features":["Content editing","Version history","Undo/restore capabilities","Derivative elements (presentation-level footer/logo)"],"derivative_elements":{"description":"Footer and logo that appear consistently across all slides","footer":{"template":"Template string with variables: {title}, {page}, {total}, {date}, {author}","values":"Dictionary of variable values","example":"{title} | Page {page} | {date}"},"logo":{"image_url":"URL of logo image to display on all slides"}},"endpoints":{"create_presentation":"POST /api/presentations","get_presentation_data":"GET /api/presentations/{id}","update_presentation_metadata":"PUT /api/presentations/{id}","update_slide_content":"PUT /api/presentations/{id}/slides/{slide_index}","add_slide":"POST /api/presentations/{id}/slides","delete_slide":"DELETE /api/presentations/{id}/slides/{slide_index}","reorder_slides":"PUT /api/presentations/{id}/slides/reorder","duplicate_slide":"POST /api/presentations/{id}/slides/{slide_index}/duplicate","change_slide_layout":"PUT /api/presentations/{id}/slides/{slide_index}/layout","regenerate_section":"POST /api/presentations/{id}/regenerate-section","get_version_history":"GET /api/presentations/{id}/versions","restore_version":"POST /api/presentations/{id}/restore/{version_id}","view_presentation":"GET /p/{id}","list_presentations":"GET /api/presentations","delete_presentation":"DELETE /api/presentations/{id}","update_derivative_elements":"PUT /api/presentations/{id}/derivative-elements","api_tester":"GET /tester","docs":"/docs"}}