demo-assembly SKILL.md skillA
demo-assembly from lukaskellerstein/claude-my-marketplace is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lukaskellerstein/claude-my-marketplace/demo-assembly@git:20260914.42e89abPins git:20260914.42e89ab in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lukaskellerstein/claude-my-marketplace
- Path
plugins/demo-video-plugin/skills/demo-assembly/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260914.42e89ab, committed Sep 14, 2026
- First version recorded
- Jul 29, 2026
- Size
- 7,061 bytes
- Repository stars
- 3
- License
- none declared
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…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Demo Assembly
Takes measured media and produces the cut. Two commands do the work; your job is to
understand what they decided and whether it was the right call.
```bash
node ${CLAUDE_PLUGIN_ROOT}/scripts/reconcile.mjs --project . # -> demo/timeline.json
bash ${CLAUDE_PLUGIN_ROOT}/scripts/render.sh --draft # -> demo/out/demo-draft.mp4
bash ${CLAUDE_PLUGIN_ROOT}/scripts/render.sh --final # -> demo/out/demo.mp4
```
## Two finishes from one timeline
| Finish | Command | Ends with |
|---|---|---|
| Remotion (default) | `render.sh --final` | `demo/out/demo.mp4`, no person needed |
| Final Cut Pro | `node ${CLAUDE_PLUGIN_ROOT}/scripts/timeline-to-fcpxml.mjs --project .` | `demo/out/demo.fcpxml`, finished and shared by a person in FCP |
Both read the same reconciled timeline, so the cut, the narration timing and the ducking are
identical; only graphics and hand polish differ. Offer the FCP finish when the user cares
about designed graphics — MotionVFX elements, FCP's title templates — or wants to fine-tune
by hand. Say plainly that its last step is theirs. Choosing the templates is the
…Read the whole file at its exact version.
How to install
mdr add lukaskellerstein/claude-my-marketplace/demo-assembly@sha256:13293cc05584d3c2The line at the top of this page pins the label git:20260914.42e89ab, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_wpv4a2vw4tiedggb)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 29, 2026 and Sep 14, 2026, about one every 24 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.42e89ab latest | 2026-09-14 | 42e89ab | 7,061 B | A | view · diff |
| git:20260912.b2c10cb | 2026-09-12 | b2c10cb | 6,873 B | A | view · diff |
| git:20260729.3efde9d | 2026-07-29 | 3efde9d | 5,899 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7061 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
lukaskellerstein/claude-my-marketplace · 3 stars · license none declared · pushed 2026-09-14 · 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/13293cc05584d3c2c74e1d374667dcefd0049796a91e4aab7eb30ff879f2b14a
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.