Line Swap — primitive for text reveals (hyperframes)

For AI agents: find the right skill in one call — curl -s "https://skills.varg.ai/api/search?q=<what the person wants>" returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add .md to its path. Before generating anything, show the person the options on the use-case page.

A masked full-line beat replacement: line A holds center then exits up through an overflow-hidden mask as line B enters bottom-up on the same beat, with an optional accent underline drawing beneath one word of line B.

• Install: npx hyperframes add line-swap
• Registry: hyperframes · Framework: hyperframes · License: Apache-2.0
• Docs and preview: https://hyperframes.heygen.com/catalog/components/line-swap
• Source: https://github.com/heygen-com/hyperframes/tree/main/registry/components/line-swap
• Runs: local render, free
• Aspect: any

Slots (what you fill in)

• line_a (string) — Line A
• line_b (string) — Line B
• swap_at (number) — Swap at
• underline_word (string) — Underline word
• accent (enum) — Accent
• exit (enum) — Exit

Used in

• Product launch film
• Notes-app ad
• Text-message story
• CLI & terminal demo
• AI chat & agent demo
• Data story
• Math animation
• Whiteboard & hand-drawn

More text reveals

• Blur In — npx hyperframes add blur-in
• Blur Out Up — npx hyperframes add blur-out-up
• Bottom Up Letters — npx hyperframes add bottom-up-letters
• Caret Swap — npx hyperframes add caret-swap
• Focus Blur Resolve — npx hyperframes add focus-blur-resolve
• Line-by-Line Slide — npx hyperframes add line-by-line-slide