demo-voiceover SKILL.md skillA
demo-voiceover 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-voiceover@git:20260729.3efde9dPins git:20260729.3efde9d 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-voiceover/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260729.3efde9d, committed Jul 29, 2026
- Size
- 6,255 bytes
- Repository stars
- 3
- License
- none declared
Generates demo narration with the ElevenLabs MCP server — one audio file per storyboard section, measured so the editor can cut picture to voice. Covers voice and model selection for product demos, fitting a line to a target duration, pronunciation of product names, optional word-level caption alignment, and music beds. Use at the voiceover stage of a demo video, when regenerating narration, or when changing the narrator.
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 Voiceover Narration is generated **before** the recorded take, because its measured length is the authoritative length of each section. The capture stage then fills that budget with dwell time, and the editor cuts picture to voice — the way demos are actually made. ## Before generating anything 1. **The storyboard is approved** (GATE 1). Regenerating narration after a rewrite is wasted credits. 2. **Check the budget.** `check_subscription` reports remaining characters; the storyboard validator prints the estimated character count on every write. Compare them, and tell the user before spending if it is close. 3. **Pick the voice once** and record it in `meta.voice` so every section matches. A voice change mid-demo is instantly audible. ## Voice selection Use `search_voices` (your library) or `search_voice_library` (public). For product demos: | Want | Look for | Avoid | |---|---|---| | Credible technical narrator | Calm, mid-range, minimal vocal fry, clear consonants | Anything described as "energetic", "hype", "trailer" | | Enterprise / finance audience | Measured, slightly formal, unhurried | Youthful, casual, upspeak | …
Read the whole file at its exact version.
How to install
mdr add lukaskellerstein/claude-my-marketplace/demo-voiceover@sha256:9d131bfbfcc9c275The line at the top of this page pins the label git:20260729.3efde9d, 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_lkmwztc3phibt2gv)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 29, 2026.
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 (6255 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_lkmwztc3phibt2gv GET https://markdownregistry.com/api/v1/resolve?ref=lukaskellerstein/claude-my-marketplace/demo-voiceover GET https://markdownregistry.com/api/v1/blob/9d131bfbfcc9c275dc29995ad3c0a80eb402f14644dda9b3d6b342b20c38eac5
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.