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

demo-assembly skillA

demo-assembly is agent-read markdown (skill) from lukaskellerstein/claude-my-marketplace: Assembles measured clips and narration into a finished demo video — reconciles real durations into a timeline, then renders it with Remotion or exports it as a Final Cut Pro project (FCPXML) for finishing with FCP titles and lower thirds. Covers the timeline contract, the bundled timeline-driven Remotion project, how to extend or replace it for custom compositions, transitions, camera moves, captions, music ducking, draft/final render presets, and the FCPXML export. Use at the reconcile, render,.

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-assembly@git:20260912.b2c10cb
Exact content
mdr add lukaskellerstein/claude-my-marketplace/demo-assembly@sha256:34b0158e9a1a61dc

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_wpv4a2vw4tiedggb.svg)](https://markdownregistry.com/a/art_wpv4a2vw4tiedggb)

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Versions

versioncommittedcommitsizeaudit
git:20260912.b2c10cb latest2026-09-12 b2c10cb 6,873 BA view · diff
git:20260729.3efde9d2026-07-29 3efde9d 5,899 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 (6873 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_wpv4a2vw4tiedggb
GET https://markdownregistry.com/api/v1/resolve?ref=lukaskellerstein/claude-my-marketplace/demo-assembly
GET https://markdownregistry.com/api/v1/blob/34b0158e9a1a61dced3362e165b9d1b6f09bddfe5aa019b620372028daf855ea