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showtell

v0.2.0

Published

2 days ago

Open-source motion engine for videos made by agents, for humans.

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ai agent video motion renderer cli bun

showtell

Agents don't just tell. They show.

Showtell is an open-source motion engine for videos made by agents, for humans. Agents author structured intent and deterministic browser HyperFrames in HTML, CSS, and JavaScript; Showtell renders narrated MP4s from code, diffs, data, maps, screenshots, images, and other declared inputs.

Install

npm install --global showtell
showtell version

Showtell supports Apple Silicon macOS and glibc-based Linux on x64 or ARM64. It installs one self-contained native binary plus the pinned Chromium runtime for your platform; Bun and a separate browser install are not required. Rendering requires ffmpeg.

macOS:

brew install ffmpeg

Ubuntu/Debian:

sudo apt-get update && sudo apt-get install -y ffmpeg espeak-ng

Quick start

Install the bundled agent skill:

showtell skill install
# Codex: showtell skill install --dir ~/.codex/skills

Then ask your agent: “Make me a showtell of this PR.”

The source, examples, and complete documentation live in the Showtell repository.

Linux note

The default local say provider uses espeak-ng on Linux. OpenAI, Replicate, and ElevenLabs are also available through environment API keys. Screen recording is currently macOS-only; rendering existing screenshots and screencap files works on Linux.

License

MIT