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 agentmods add skills/modem-dev/sideshow/launch-videonpx skills add modem-dev/sideshow --skill launch-videogit clone --depth 1 https://github.com/modem-dev/sideshowWhat 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 | $0.00064 | $0.02386 |
| Opus 5 | $0.00032 | $0.01193 |
| Sonnet 5 | $0.00013 | $0.00477 |
| Haiku 4.5 | $0.00006 | $0.00239 |
Grade A, and why
launch-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 2d 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 — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sideshow video pipeline
Maintainer-only: requires a sideshow source checkout (the pipeline lives in
scripts/launch-video/, which never ships to npm).
Generates product videos where every app frame is the real sideshow viewer
talking to a real server — no screen recording, no mockups. Unlike hunk's
keyframe-compositing pipeline (skills/launch-video in the hunk repo),
sideshow's product IS live motion — cards streaming in over SSE, sandboxed
iframes resizing, the comment loop — so this pipeline records one real-time
pass instead of compositing stills:
stage.html a 1920x1080 HTML stage: window chrome + caption lower-third +
full-screen title cards, with the live viewer in an iframe
record.mjs boots a fresh server, seeds demo content, drives the storyboard
with Playwright while recording video, prints the raw webm path
ffmpeg re-encodes the raw webm to mp4 (h264) and webm (vp9)
Two halves live in record.mjs: reusable machinery (boot, seed, CSP strip,
stage resolution, browser/recording setup) and the storyboard — the scene
sequence, captions, and title cards. The storyboard is editorial content for
one video; rewrite it per video. As of this writing the checked-in reference
storyboard is the 0.13.0 release video.
Creating a video
Expect a run to take roughly the video's length plus ~20s boot; encoding adds a couple of minutes. Total output should stay near 40–60s.
# 0. one-time work-dir setup (fonts are optional but much nicer than DejaVu)
mkdir -p .video-work && cd .video-work
printf '{"name":"sideshow-video-work","private":true}\n' > package.json
npm i @fontsource-variable/inter @fontsource/jetbrains-mono
cd ..
# 1. record (server boot + seed + storyboard, prints the raw webm path)
node scripts/launch-video/record.mjs
# 2. encode both deliverables
cd .video-work
RAW=$(ls page@*.webm)
ffmpeg -y -i "$RAW" -vf "fps=30,format=yuv420p" \
-c:v libx264 -preset slow -crf 18 -movflags +faststart sideshow-X.Y.Z.mp4
ffmpeg -y -i "$RAW" -vf "fps=30,format=yuv420p" \
-c:v libvpx-vp9 -b:v 0 -crf 32 -row-mt 1 sideshow-X.Y.Z.webm
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.
- 2d ago First seen · 165 lines · 64 tokens per session scan A 026bc7c526db
launch-video is a skill published in the GitHub repository modem-dev/sideshow (567 stars, last pushed 6d ago), licensed MIT. It adds 64 tokens to every session and 2,386 once invoked, about $0.0003 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.
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