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 zarpay/rails-template --skill hwc-realtime-streaminggit clone --depth 1 https://github.com/zarpay/rails-templateWrote 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/zarpay/rails-template/hwc-realtime-streaming)<a href="https://agentmods.dev/skills/zarpay/rails-template/hwc-realtime-streaming"><img src="https://agentmods.dev/badge/skills/zarpay/rails-template/hwc-realtime-streaming/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/zarpay/rails-template/hwc-realtime-streaming"><img src="https://agentmods.dev/badge/skills/zarpay/rails-template/hwc-realtime-streaming.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 | $0.00124 | $0.00623 |
| Opus 5 | $0.00062 | $0.00311 |
| Sonnet 5 | $0.00025 | $0.00125 |
| Haiku 4.5 | $0.00012 | $0.00062 |
Grade A, and why
hwc-realtime-streaming 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 10d 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.
This is a copy
100% identical to hwc-realtime-streaming — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Real-Time & Streaming
Implement push-driven Hotwire behavior with Turbo Streams and Stimulus.
Core Workflow
- Identify transport and delivery shape: WebSocket, SSE, inline stream tags, or server response streams.
- Choose default Turbo Stream actions first; add custom actions only when defaults are insufficient.
- Keep stream actions small and deterministic; avoid embedding arbitrary scripts in stream payloads.
- Separate stream orchestration from domain UI concerns (forms, media, navigation).
- Verify ordering, idempotency, and multi-tab behavior for all real-time updates.
Guardrails
- Prefer
append/prepend/replace/update/remove/before/after/refreshbefore custom actions. - Keep cross-tab sync explicit (BroadcastChannel/localStorage) and scope it to same-device semantics.
- Use view transitions only where animation meaningfully improves state-change clarity.
- Validate failure modes for delayed/out-of-order messages.
Load References Selectively
Open only the file needed for the current request.
- Inline client-side stream tags:
references/2023-08-01-turbo-streams-inline-stream-tags.md - Custom Turbo Stream actions:
references/2023-08-15-turbo-streams-custom-stream-actions.md - Advanced playlist orchestration via custom actions:
references/2023-10-10-turbo-streams-custom-stream-actions-video-playlist-management.md - LocalStorage-backed stream state:
references/2024-01-30-turbo-streams-custom-stream-actions-localstorage.md - List animations with View Transitions:
references/2025-06-10-turbo-streams-list-animation-view-transitions.md - Real-time combobox updates:
references/2024-03-12-hotwire-combobox-with-real-time-data.md - Inter-tab communication patterns:
references/2023-11-21-stimulus-inter-tab-communication.md
Use references/INDEX.md for the full catalog.
Escalate to Neighbor Skills
- Pull-based navigation/history concerns: use
hwc-navigation-content - Form validation and submit lifecycle concerns: use
hwc-forms-validation - Media playback/upload interactions: use
hwc-media-content - Generic loading/progress/transition UX: use
hwc-ux-feedback - Base Stimulus API questions outside streaming: use
hwc-stimulus-fundamentals
What ships with it
8 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.
- references/2023-08-01-turbo-streams-inline-stream-tags.md 3.9 KB
- references/2023-08-15-turbo-streams-custom-stream-actions.md 5.2 KB
- references/2023-10-10-turbo-streams-custom-stream-actions-video-playlist-management.md 10 KB
- references/2023-11-21-stimulus-inter-tab-communication.md 7.1 KB
- references/2024-01-30-turbo-streams-custom-stream-actions-localstorage.md 6.3 KB
- references/2024-03-12-hotwire-combobox-with-real-time-data.md 5.3 KB
- references/2025-06-10-turbo-streams-list-animation-view-transitions.md 5.0 KB
- references/INDEX.md 1.4 KB
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.
- 10d ago First seen · 47 lines · 124 tokens per session scan A 76f5d8905c17
hwc-realtime-streaming is a skill published in the GitHub repository zarpay/rails-template (9 stars, last pushed 28d ago), licensed MIT. It adds 124 tokens to every session and 623 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to hwc-realtime-streaming, differing in 0 lines, and is treated as a copy.
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