{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"synthesia-api","slug":"synthesia-api","name":"Synthesia API","type":"api","url":"https://docs.synthesia.io","page_url":"https://unfragile.ai/synthesia-api","categories":["video-generation"],"tags":[],"pricing":{"model":"free","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"synthesia-api__cap_0","uri":"capability://image.visual.ai.avatar.video.generation.from.text.scripts","name":"ai avatar video generation from text scripts","description":"Generates professional presenter videos by accepting raw text or script input, automatically segmenting content into scenes based on paragraph breaks, and rendering each scene with a selected AI avatar speaking the corresponding text. The system supports 140+ languages with text-to-speech synthesis and lip-sync animation, enabling creation of videos up to 4 hours total duration across maximum 150 scenes with 5-minute per-scene limits.","intents":["Generate multilingual training videos without hiring actors or video production teams","Create presenter-led content at scale for e-learning platforms","Produce localized versions of the same video script across 140+ languages automatically","Build video content from existing documentation or training materials"],"best_for":["Enterprise training and L&D teams scaling video production","SaaS companies localizing product demos across global markets","Content creators producing high-volume educational or marketing videos"],"limitations":["Maximum 150 scenes per video — longer scripts require splitting into multiple videos","Maximum 5 minutes per scene — extended monologues must be broken into multiple scenes","Scene segmentation is automatic based on paragraph breaks — manual scene control not documented","Language support is 140+ but no documented API parameter for language selection or fallback behavior","Avatar selection mechanism and customization scope unknown from available documentation"],"requires":["Valid API key (format and generation mechanism not documented)","Text input in supported language (140+ languages claimed but list not provided)","Selected avatar and template (pre-built or custom)","Optional: brand kit for template customization"],"input_types":["plain text (script/paragraph-based)","structured text with scene markers"],"output_types":["MP4 video file","video metadata (duration, scene count, language)"],"categories":["image-visual","text-generation-language"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_1","uri":"capability://image.visual.powerpoint.to.video.conversion.with.layout.preservation","name":"powerpoint-to-video conversion with layout preservation","description":"Accepts PowerPoint files (.pptx format, maximum 1GB) and automatically converts slide content into video scenes while preserving layout, text, and visual hierarchy. The system imports slides as backgrounds, overlays AI avatars, and generates speech from slide text or custom scripts. Supports up to 150 slides per video with automatic aspect ratio conversion from 4:3 to 16:9 and embedded font handling.","intents":["Convert existing PowerPoint presentations into presenter-led videos without manual re-creation","Preserve slide design and branding while adding AI avatar narration","Batch-convert multiple presentations into video format for distribution","Maintain slide-to-scene mapping for complex multi-slide presentations"],"best_for":["Corporate training teams with existing PowerPoint libraries","Sales teams converting pitch decks into video format","Educational institutions converting lecture slides into video content"],"limitations":["PowerPoint format limited to .pptx only — .ppt files not supported","File size capped at 1GB — very large presentations with embedded media may exceed limit","Animations and transitions are not imported — only static slide content is converted","Tables imported as non-editable static background images — no table data extraction or reformatting","Grouped images and shapes imported as single flattened element — cannot be individually manipulated","Non-embedded fonts require replacement or upload — custom fonts not supported on Freemium/Starter plans","Color editing disabled for shapes with images or effects (blur, shadow, reflection)","4:3 aspect ratio presentations automatically converted to 16:9 — may cause layout distortion"],"requires":["PowerPoint file in .pptx format","File size under 1GB","Fonts either embedded in presentation or available for upload (Starter+ plans only)","Selected avatar and template for video rendering"],"input_types":["PowerPoint file (.pptx)"],"output_types":["MP4 video file with slide-to-scene mapping","video metadata (slide count, total duration)"],"categories":["image-visual","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_2","uri":"capability://data.processing.analysis.url.to.video.content.extraction.and.conversion","name":"url-to-video content extraction and conversion","description":"Accepts publicly accessible URLs and automatically extracts text content (up to 4,500 words) to generate video scripts. The system parses web page content, segments it into scenes based on logical breaks, and renders video with AI avatar narration. Supports any publicly available web page without authentication requirements.","intents":["Convert blog posts or articles into video format for multi-channel distribution","Generate video summaries from web-based documentation or knowledge bases","Create video versions of published content without manual transcription","Automate video production from existing web content libraries"],"best_for":["Content marketing teams repurposing blog content into video","Documentation teams creating video guides from published docs","News or publishing organizations automating video creation from articles"],"limitations":["Content length capped at 4,500 words — longer pages will be truncated","URL must be publicly accessible — no authentication or behind-paywall content support","Content extraction mechanism not documented — may fail on complex page layouts, JavaScript-rendered content, or non-standard HTML","Scene segmentation logic unknown — unclear how logical breaks are detected or if manual override is possible","No control over which content is extracted — entire page content processed without selective element targeting"],"requires":["Publicly accessible URL (no authentication required)","URL content under 4,500 words","Selected avatar and template for video rendering"],"input_types":["HTTP/HTTPS URL (publicly accessible)"],"output_types":["MP4 video file","extracted text content (for review before rendering)","video metadata (duration, scene count)"],"categories":["data-processing-analysis","image-visual"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_3","uri":"capability://planning.reasoning.document.upload.and.ai.assisted.video.outline.generation","name":"document upload and ai-assisted video outline generation","description":"Accepts document uploads in multiple formats (.ppt, .pptx, .pdf, .doc, .docx, .txt; maximum 50MB per file) and uses an AI assistant to automatically generate video outlines, scene segmentation, and template recommendations. The system analyzes document structure and content to propose scene breaks, suggests appropriate templates, and optionally applies brand kit customization before video rendering.","intents":["Automatically structure unorganized documents into video-ready scene outlines","Get AI-powered template recommendations based on document content and tone","Reduce manual scene planning and script editing before video generation","Apply brand consistency across videos through automatic brand kit integration"],"best_for":["Teams with large document libraries seeking to convert to video at scale","Non-technical users needing AI assistance to structure video content","Enterprises requiring consistent branding across all video outputs"],"limitations":["File size capped at 50MB — very large documents must be split","Supported formats limited to .ppt, .pptx, .pdf, .doc, .docx, .txt — no support for other formats (e.g., .odt, .pages)","AI outline generation quality and accuracy not documented — no control over scene break suggestions","Template recommendation mechanism unknown — unclear how templates are selected or if manual override is possible","Brand kit application is optional and post-outline — cannot influence initial outline generation","No documented ability to reject or edit AI-generated outlines before video rendering"],"requires":["Document file in supported format (.ppt, .pptx, .pdf, .doc, .docx, .txt)","File size under 50MB","Optional: brand kit for template customization"],"input_types":["document file (.ppt, .pptx, .pdf, .doc, .docx, .txt)"],"output_types":["AI-generated video outline (scene structure, suggested template)","template recommendation","MP4 video file (after user confirmation)"],"categories":["planning-reasoning","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_4","uri":"capability://image.visual.custom.ai.avatar.creation.and.management","name":"custom ai avatar creation and management","description":"Enables creation of custom AI avatars beyond pre-built options, allowing enterprises to build branded presenter personas. The system supports avatar customization (specific aspects unknown from documentation) and stores custom avatars for reuse across multiple video projects. Custom avatars are managed through a user account or organization workspace.","intents":["Create branded AI presenter personas matching company identity","Maintain consistent avatar across multiple video projects and campaigns","Build custom avatars for specific use cases (e.g., product demo, training, customer support)","Manage avatar library across teams or departments"],"best_for":["Enterprise organizations requiring branded presenter consistency","Companies with specific avatar requirements (appearance, voice, accent)","Teams managing large video libraries with multiple presenter personas"],"limitations":["Avatar customization scope unknown — unclear what aspects are customizable (appearance, voice, clothing, etc.)","Custom avatar creation process not documented — no information on input requirements, approval workflows, or turnaround time","Avatar reusability and sharing across teams/projects not documented","No documented limits on number of custom avatars per account or organization","Avatar versioning or update mechanisms unknown","No information on whether custom avatars can be exported or used outside Synthesia platform"],"requires":["Enterprise or higher plan (custom avatars not available on Freemium/Starter plans — inferred from brand kit limitations)","Avatar customization specifications (format and requirements unknown)"],"input_types":["avatar customization parameters (format unknown)"],"output_types":["custom avatar asset (stored in account)","avatar ID for use in video generation requests"],"categories":["image-visual"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_5","uri":"capability://image.visual.brand.kit.template.customization.and.application","name":"brand kit template customization and application","description":"Allows enterprises to create brand kits containing custom colors, logos, fonts, and design elements, then apply these kits to video templates during video creation. The system overlays brand assets onto selected templates, ensuring visual consistency across all generated videos. Brand kit application is optional and can be toggled on/off per video project.","intents":["Ensure visual consistency across all company videos using centralized brand guidelines","Apply corporate branding (logos, colors, fonts) to video templates without manual editing","Manage brand assets across teams and enforce brand compliance in video production","Reduce design work by automating brand application to templates"],"best_for":["Enterprise organizations with strict brand guidelines","Marketing teams managing multiple video campaigns with consistent branding","Agencies producing videos for multiple clients with different brand requirements"],"limitations":["Brand kit creation and management API not documented — unclear what assets are supported (logos, colors, fonts, etc.)","Brand kit application scope unknown — unclear which template elements can be customized","No documented limits on brand kit size, number of assets, or file formats","Brand kit sharing and permissions model not documented","No information on brand kit versioning or update workflows","Custom font support limited to Starter+ plans — Freemium users cannot upload custom fonts","Brand kit application is post-outline — cannot influence AI outline generation or template recommendation"],"requires":["Starter or higher plan (custom fonts not available on Freemium)","Brand kit created with custom assets (creation process not documented)"],"input_types":["brand kit assets (logos, colors, fonts — specific formats unknown)"],"output_types":["branded video template (MP4 video file with brand assets applied)"],"categories":["image-visual","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_6","uri":"capability://search.retrieval.template.library.browsing.and.selection.with.tag.based.discovery","name":"template library browsing and selection with tag-based discovery","description":"Provides a pre-built library of video templates with tag-based discovery and preview functionality. Users browse templates by category or tag, preview layouts and styling, and select a template for video rendering. Templates define overall video structure, layout, avatar positioning, and visual styling. Template selection is required before video generation.","intents":["Quickly find appropriate video template for specific use case (training, marketing, product demo, etc.)","Preview template layouts and styling before committing to video generation","Ensure visual consistency by selecting from curated template library","Reduce design decisions by using pre-built template layouts"],"best_for":["Non-technical users needing guided template selection","Teams with limited design resources seeking pre-built layouts","Organizations requiring quick video production without custom design"],"limitations":["Template library size and update frequency not documented","Tag taxonomy and discovery mechanism not documented — unclear how tags are organized or searchable","Template customization scope unknown — unclear what elements can be modified after selection","No documented ability to create custom templates from scratch","Template preview functionality not documented — unclear what aspects are shown in preview","No information on template versioning or deprecation"],"requires":["Access to template library (available on all plans — inferred from documentation)"],"input_types":["template search query (tag-based)","template ID (for direct selection)"],"output_types":["template metadata (name, description, tags, preview image)","template asset (selected for video rendering)"],"categories":["search-retrieval","image-visual"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_7","uri":"capability://text.generation.language.multilingual.video.generation.with.automatic.language.detection","name":"multilingual video generation with automatic language detection","description":"Supports video generation in 140+ languages with automatic text-to-speech synthesis and lip-sync animation for each language. The system detects input language (mechanism unknown) and applies appropriate voice and avatar lip-sync. Enables creation of localized video versions from single script without manual language-specific re-recording.","intents":["Generate localized video versions across 140+ languages from single script","Reach global audiences without hiring multilingual voice actors","Automate localization workflow for training, marketing, or product videos","Maintain consistent messaging across languages with AI-generated narration"],"best_for":["Global enterprises requiring multilingual content at scale","SaaS companies localizing product demos across markets","Educational platforms serving international audiences"],"limitations":["Language support is 140+ but no documented list of supported languages","Language detection mechanism not documented — unclear if automatic or manual selection required","Language-specific voice options and quality not documented","Accent and dialect support unknown","No information on language-specific text-to-speech quality or naturalness","Lip-sync accuracy for non-English languages not documented","No documented ability to select specific voice or speaker for each language","Regional language variants (e.g., Simplified vs. Traditional Chinese) not documented"],"requires":["Input text in supported language (140+ languages claimed but list not provided)","Language specification (automatic detection or manual selection — mechanism unknown)"],"input_types":["text in supported language"],"output_types":["MP4 video file with language-specific narration and lip-sync"],"categories":["text-generation-language","image-visual"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_8","uri":"capability://automation.workflow.video.composition.with.scene.level.constraints.and.duration.management","name":"video composition with scene-level constraints and duration management","description":"Manages video composition through scene-based architecture with enforced constraints: maximum 150 scenes per video, maximum 5 minutes per scene, and maximum 4 hours total duration. The system triggers video completion when either scene count or duration limit is reached. Scenes are automatically generated from paragraph breaks in text input or manually defined through document structure.","intents":["Understand composition limits before starting video project to avoid exceeding constraints","Plan video structure around scene and duration limits for large projects","Break long content into multiple videos when exceeding composition limits","Manage video complexity through scene-level organization"],"best_for":["Teams planning large-scale video projects with multiple videos","Content creators understanding platform constraints before production","Developers building video generation workflows with constraint awareness"],"limitations":["Scene limit of 150 — longer scripts must be split into multiple videos","Scene duration limit of 5 minutes — extended monologues must be broken into multiple scenes","Total duration limit of 4 hours — very long content requires multiple video projects","Scene segmentation is automatic based on paragraph breaks — no documented manual scene control","Constraint enforcement mechanism not documented — unclear if system warns before exceeding limits or silently truncates","No documented ability to override or increase composition limits on higher plans"],"requires":["Input content structured to fit within composition constraints (150 scenes, 5 min/scene, 4 hours total)"],"input_types":["text with paragraph breaks (for automatic scene segmentation)","document with defined structure (for scene mapping)"],"output_types":["MP4 video file (up to 4 hours duration, 150 scenes maximum)"],"categories":["automation-workflow","planning-reasoning"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__cap_9","uri":"capability://memory.knowledge.assets.api.for.media.library.management","name":"assets api for media library management","description":"Manages a centralized library of media assets (images, videos, audio files) that can be reused across multiple video projects. The Assets API enables uploading, organizing, tagging, and retrieving media assets for use in scene composition. Assets are stored in a project-scoped or organization-scoped library and can be referenced by ID in video projects.","intents":["Build reusable media libraries for consistent visual elements across videos","Organize and tag assets for easy discovery and reuse","Reduce storage overhead by referencing assets by ID rather than embedding","Enable teams to share approved media across projects"],"best_for":["Organizations managing large media libraries","Teams needing centralized asset management","Developers building asset-heavy video generation workflows","Enterprises with strict asset governance requirements"],"limitations":["Assets API documentation minimal — endpoint details, storage limits, organization unknown","Asset versioning and update mechanisms unknown","Unknown whether assets are project-scoped or organization-scoped","No information on asset access controls or sharing permissions","Storage quota and retention policies unknown","Asset format support and size limits unknown"],"requires":["Media files to upload (format/size limits unknown)","Asset metadata (tags, descriptions, etc.)","API key for Synthesia authentication"],"input_types":["image files (format unknown)","video files (format unknown)","audio files (format unknown)","asset metadata"],"output_types":["asset ID","asset metadata","asset URL for reference"],"categories":["memory-knowledge","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"synthesia-api__headline","uri":"capability://video.generation.ai.video.generation.api","name":"ai video generation api","description":"The Synthesia API is an enterprise-level solution for generating professional presenter videos at scale using realistic AI avatars, supporting over 140 languages and customizable templates.","intents":["best AI video generation API","AI video generation for marketing","how to create videos with AI avatars","top APIs for video content creation","enterprise video generation solutions"],"best_for":["enterprises needing scalable video content","brands looking for customizable video solutions"],"limitations":[],"requires":[],"input_types":["text scripts","PowerPoint presentations"],"output_types":["video files"],"categories":["video-generation"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":58,"verified":false,"data_access_risk":"moderate","permissions":["Valid API key (format and generation mechanism not documented)","Text input in supported language (140+ languages claimed but list not provided)","Selected avatar and template (pre-built or custom)","Optional: brand kit for template customization","PowerPoint file in .pptx format","File size under 1GB","Fonts either embedded in presentation or available for upload (Starter+ plans only)","Selected avatar and template for video rendering","Publicly accessible URL (no authentication required)","URL content under 4,500 words"],"failure_modes":["Maximum 150 scenes per video — longer scripts require splitting into multiple videos","Maximum 5 minutes per scene — extended monologues must be broken into multiple scenes","Scene segmentation is automatic based on paragraph breaks — manual scene control not documented","Language support is 140+ but no documented API parameter for language selection or fallback behavior","Avatar selection mechanism and customization scope unknown from available documentation","PowerPoint format limited to .pptx only — .ppt files not supported","File size capped at 1GB — very large presentations with embedded media may exceed limit","Animations and transitions are not imported — only static slide content is converted","Tables imported as non-editable static background images — no table data extraction or reformatting","Grouped images and shapes imported as single flattened element — cannot be individually manipulated","builder identity is not verified yet","no observed match outcomes 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