tiktok-captions

Tiktok-captions guides the creation of publish-ready TikTok captions and video scripts, and helps optimize content for the platform. It is triggered when a user wants to write TikTok captions, scripts, or copy, or mentions related phrases like TikTok post, video, script, content, hashtags, or marketing; for paid TikTok promotion it defers to a separate tiktok-ads skill. It is designed to serve copy agents as well as video agents that need format and length, and design agents that produce thumbnails, and it notes that on first use it can briefly explain what it covers before delivering output.

The skill emphasizes why captions matter: they drive SEO, accessibility, and watch time, with captions cited as increasing watch time by 12 to 20 percent, and it points out that over 80 percent of viewers watch without sound. Captions follow a three-part structure of a hook of five to seven words to grab attention and create curiosity, one to two sentences of context conveying details the video does not show such as size, price, or backstory, and an optional call to action like save this or link in bio. It provides example hooks and best practices around strong font and background contrast, using TikTok's built-in auto-captions which the algorithm rewards, keyword usage for search visibility, and testing readability across devices.

For video agents it specifies concrete video specs: a 9:16 portrait aspect ratio, 1080x1920 resolution, lengths from three seconds to ten minutes with guidance that fifteen to sixty seconds suits tips and one to three minutes suits tutorials, MP4 or MOV format with H.264 and AAC, and file size limits of up to 5MB on Android and up to 88MB on iOS. A content-by-length table maps durations to use cases. The prescribed output format bundles the caption, an optional video script, the video specs, and three to five niche-relevant hashtags, and it lists related skills including tiktok-ads, influencer-marketing, and twitter-x-posts.