RiffCast · v0.1 alpha · MIT

One sentence in. Finished design out.

RiffCast is an open-source AI design skill for Claude Code, Cursor, Claude Desktop, OpenCode, and any other agentic runtime. Animations, decks, infographics, prototypes — generated by the AI agent you already use, with zero GUI.

View on GitHub Agent self-install How it works

Install in any AI agent

Paste this into Claude Code, Cursor, OpenCode, Trae, Claude Desktop, or any AI agent that can read URLs:

Install RiffCast from https://riffcast.soula.ge/INSTALL.md

The agent identifies its runtime, picks the right connector (markdown skill / MCP server / pydantic / CLI), and runs the install for you.

Or install manually:

# Markdown skill — Claude Code, Cursor, OpenCode, Trae
npx skills add @riffcast/skill

# MCP server — Claude Desktop, Cursor MCP, Continue
# Add to your mcp.json (see INSTALL.md §2B)

# CLI — any shell
npm i -g @riffcast/cli
riffcast --version

Why RiffCast

Code-driven, not GUI-driven. Animations are React/JSX (Remotion). Decks are markdown (Slidev). Infographics are React-SVG. The surfaces AI agents are best at.
Five connectors, one core. Markdown skill, MCP server, pydantic-AI tool, CLI, library — same engine underneath.
Opinionated design vocabularies. modern-clean, editorial, playful — defensible style choices, not safe defaults.
Thin tools. The host agent stays in the creative loop the entire time. RiffCast doesn't hide the design behind another LLM.
Built from first principles. No competitor analysis, no template-store ingestion, no closed APIs.

Roadmap

Release	Surface	Status
v0.1	Animations (Remotion → MP4 / GIF)	In flight
v0.2	Static infographics (SVG / PNG / PDF)	Planned
v0.3	Decks (Slidev) + native pydantic-AI tool	Planned
v0.4+	Clickable prototypes, brand-asset auto-extraction	Planned