Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add feiskyer/video-skills --skill narrate-videogit clone --depth 1 https://github.com/feiskyer/video-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/feiskyer/video-skills/narrate-video)<a href="https://agentmods.dev/skills/feiskyer/video-skills/narrate-video"><img src="https://agentmods.dev/badge/skills/feiskyer/video-skills/narrate-video/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/feiskyer/video-skills/narrate-video"><img src="https://agentmods.dev/badge/skills/feiskyer/video-skills/narrate-video.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00154 | $0.02258 |
| Opus 5 | $0.00077 | $0.01129 |
| Sonnet 5 | $0.00031 | $0.00452 |
| Haiku 4.5 | $0.00015 | $0.00226 |
Grade A, and why
narrate-video scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Video Narration
Add professional voiceover to a video. Analyze the video, write or refine a timed script, generate speech via Azure TTS or Gemini 3.1 Flash TTS, and merge — producing a narrated video where audio and visuals stay in sync.
Input: $ARGUMENTS
Additional resources
- Voice table and timing estimates: references/voices.md
- Gemini TTS API and AI Studio request shape: references/gemini-tts.md
- Python script template: scripts/narration_script_template.py — copy into the video's directory as
narration_script.pyand fill in the placeholders
Phase 0: Setup
Provider
Default to azure unless the user explicitly asks for Gemini or already has GEMINI_API_KEY configured. When using Gemini, use the official Gemini TTS request pattern documented in references/gemini-tts.md.
Language
Ask the user which language they want. Default to English. Look up the voice and speech rate in references/voices.md.
Environment
# 1. Check provider credentials exist (NEVER read or display their values)
scripts/check_env.py azure
# or
scripts/check_env.py gemini
# 2. Check tool dependencies
command -v ffmpeg && command -v ffprobe && command -v python3
# 3. Check Python dependencies
python3 -c "import dotenv" 2>&1
# 4. Azure only
python3 -c "import azure.cognitiveservices.speech" 2>&1
If Azure is selected and AZURE_SPEECH_KEY or AZURE_SPEECH_REGION is missing, ask the user to add them to ~/.narrate_video.env:
AZURE_SPEECH_KEY=your-key-here
AZURE_SPEECH_REGION=your-region-here
If Gemini is selected and GEMINI_API_KEY is missing, ask the user to add it to ~/.narrate_video.env:
GEMINI_API_KEY=your-key-here
# Optional override
GEMINI_TTS_MODEL=gemini-3.1-flash-tts-preview
Then stop — the key is sensitive, only check whether it exists, never read or display its value.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 219 lines · 154 tokens per session scan A 7fc0a85112af
narrate-video is a skill published in the GitHub repository feiskyer/video-skills (14 stars, last pushed 4mo ago), licensed MIT. It adds 154 tokens to every session and 2,258 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
multimodal-llm
Vision, audio, video generation, and multimodal LLM integration patterns. Use when processing images, transcribing audio, generating speech, generating AI video (Kling v3, Sora 2, Veo 3.1 std/lite/fast, Runway Gen-4.5 via gen4turbo), or building multimodal AI pipelines.
mk:multimodal
Process images, video, audio, PDFs with Gemini API. Generate images (Nano Banana 2), videos (Veo 3), speech (MiniMax TTS), music (MiniMax). Convert documents to Markdown. Multi-provider fallback (Gemini → MiniMax → OpenRouter). Activate when task references media files, asks to…
minimax-cli
Nested swiss-knife reference for the MiniMax mmx CLI and the canonical MiniMax CLI procedure shipped with the TUI: install mmx-cli, discover the correct TUI-managed MiniMax preset/key slot without leaking secrets, match mainland vs international regions, and route image/video/music/TTS generation or one-shot shell…
videoagent-audio-studio
Tired of juggling multiple audio APIs? This skill gives you one-command access to TTS, music generation, sound effects, and voice cloning. Use when you want to generate any audio without managing multiple API keys.
tiktok-transcribe
A workflow that downloads TikTok videos, turns their audio into text with speech-recognition software, and saves the result as a Markdown file.
bilibili-transcribe
A workflow that downloads videos from Bilibili, a Chinese video-sharing site, transcribes their speech, and saves the result as Markdown text. It accepts Bilibili links or BV video identifiers and tries available subtitles before audio transcription.