lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-video/SKILL.md

demo-video skillA

demo-video is agent-read markdown (skill) from lukaskellerstein/claude-my-marketplace: Orchestrates building a narrated demo video of a project — reads the codebase, writes a storyboard, prepares deterministic app state, drives the UI with Playwright to record clips (web and Electron, recorded by Playwright or by OBS), generates ElevenLabs voiceover, reconciles measured durations into a timeline, and renders the final cut with Remotion or exports it as a Final Cut Pro project. Use whenever the user asks for a demo video, screencast, product walkthrough, feature showcase, release v.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add lukaskellerstein/claude-my-marketplace/demo-video@git:20260912.b2c10cb
Exact content
mdr add lukaskellerstein/claude-my-marketplace/demo-video@sha256:8f0675c626578c4b

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_7pyhamnmyy4zhzp3.svg)](https://markdownregistry.com/a/art_7pyhamnmyy4zhzp3)

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Versions

versioncommittedcommitsizeaudit
git:20260912.b2c10cb latest2026-09-12 b2c10cb 10,343 BA view · diff
git:20260729.3efde9d2026-07-29 3efde9d 8,590 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10343 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

lukaskellerstein/claude-my-marketplace · 3 stars · license none · pushed 2026-09-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7pyhamnmyy4zhzp3
GET https://markdownregistry.com/api/v1/resolve?ref=lukaskellerstein/claude-my-marketplace/demo-video
GET https://markdownregistry.com/api/v1/blob/8f0675c626578c4baade18cf45061373620e3b5cb9f9d9467ef1d140194fbe1c