What is hwc-media-content?

A guide for building Hotwire features that handle images, video, audio, uploads, previews, playback, and media libraries.

Use it for upload previews, playback controls, progress tracking, carousels, and integrations with media tools.

It helps manage browser media state and clean up temporary resources so previews and players do not interfere with the rest of the interface.

hwc-media-content — Skill for Claude Code and Codex by TheHotwireClub

Install

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.

Any agent

npx skills add TheHotwireClub/hotwire_club-skills --skill hwc-media-content

Clone the repo

git clone --depth 1 https://github.com/TheHotwireClub/hotwire_club-skills

Made for: Claude Code, Codex.

Or install hotwire_club-skills, the plugin that ships this one along with the rest of its 6 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/thehotwireclub/hotwire_club-skills/hwc-media-content/github.svg)](https://agentmods.dev/skills/thehotwireclub/hotwire_club-skills/hwc-media-content)

Your own site

<a href="https://agentmods.dev/skills/thehotwireclub/hotwire_club-skills/hwc-media-content"><img src="https://agentmods.dev/badge/skills/thehotwireclub/hotwire_club-skills/hwc-media-content/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/thehotwireclub/hotwire_club-skills/hwc-media-content"><img src="https://agentmods.dev/badge/skills/thehotwireclub/hotwire_club-skills/hwc-media-content.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 140 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 683 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00140	$0.00683
Opus 5	$0.00070	$0.00342
Sonnet 5	$0.00028	$0.00137
Haiku 4.5	$0.00014	$0.00068

Measured 12d ago against content hash 0a15d27025c8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

hwc-media-content 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 12d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

hwc-media-content — 100% identical, 0 lines differ

skills/hwc-media-content/SKILL.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Media & Rich Content

Implement media-centric Hotwire features with Stimulus and Turbo Frames.

Core Workflow

Identify media mode: upload/preview, playback controls, progress persistence, or embedded library integration.
Keep media state in Stimulus values; bridge third-party APIs through value callbacks and targets.
Use browser-native APIs first (URL.createObjectURL, Picture-in-Picture, IntersectionObserver, MediaSession).
Clean up all allocated resources in disconnect() (observers, blob URLs, player instances, timers).
Persist only intentional client state (for example playback progress) and reconcile on load.

Guardrails

Revoke blob URLs after image/file preview rendering.
Prefer feature detection for browser APIs (PiP/Web Share/MediaSession).
Avoid mixing transport concerns; media rendering belongs here, stream orchestration belongs in real-time skill.
Keep frame updates incremental for time-based UI (lyrics, carousels, progress widgets).

Load References Selectively

Open only the file needed for the current request.

Upload previews via blob URLs: references/2024-09-17-stimulus-image-upload-previews.md
Progressive image loading and Blurhash: references/2024-04-23-stimulus-progressive-image-loading-blurhash.md
Picture-in-Picture behavior: references/2024-06-04-stimulus-picture-in-picture.md
Video progress persistence: references/2024-10-29-stimulus-video-progress-tracker.md
WaveSurfer marker add flows: references/2024-07-02-stimulus-wavesurfer-add-markers.md
WaveSurfer marker remove flows: references/2024-07-30-stimulus-wavesurfer-remove-markers.md
Time-synced lyrics frame updates: references/2024-04-09-turbo-frames-scrolling-lyrics.md
Swiper autoplay with Turbo Frames: references/2025-01-14-turbo-frames-swiper-autoplay.md

Use references/INDEX.md for the full catalog.

Escalate to Neighbor Skills

Push-based data updates or custom Turbo Stream actions: use hwc-realtime-streaming
Pagination/tab/filter navigation concerns: use hwc-navigation-content
Form lifecycle and validation handling: use hwc-forms-validation
Generic loading/progress/transition UX: use hwc-ux-feedback
Pure Stimulus API architecture: use hwc-stimulus-fundamentals

Read the full file on GitHub · 48 lines

Files

What ships with it

10 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.

Changes

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.

12d ago First seen · 48 lines · 140 tokens per session scan A 0a15d27025c8

Subscribe to this mod's changes

hwc-media-content is a skill published in the GitHub repository TheHotwireClub/hotwire_club-skills (127 stars, last pushed 3mo ago), licensed MIT. It adds 140 tokens to every session and 683 once invoked, about $0.0007 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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