Borrowing it
Nothing to install: this file belongs to levifig/rails-instructions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/levifig/rails-instructions/main/.github/instructions/rails-hotwire.instructions.mdgit clone --depth 1 https://github.com/levifig/rails-instructionsWrote 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/instructions/levifig/rails-instructions/rails-hotwire)<a href="https://agentmods.dev/instructions/levifig/rails-instructions/rails-hotwire"><img src="https://agentmods.dev/badge/instructions/levifig/rails-instructions/rails-hotwire/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/instructions/levifig/rails-instructions/rails-hotwire"><img src="https://agentmods.dev/badge/instructions/levifig/rails-instructions/rails-hotwire.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 | $0.01209 | $0.01209 |
| Opus 5.5 | $0.00484 | $0.00484 |
| Sonnet 5.5 | $0.00242 | $0.00242 |
| Haiku 4.5 | $0.00121 | $0.00121 |
Grade A, and why
rails-instructions rails-hotwire.instructions.md 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 1mo 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 — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rails Hotwire Guide
Core Philosophy
- Send HTML over the wire, not JSON - let the server do the rendering
- Achieve SPA-like speed without complex JavaScript frameworks
- Use progressive enhancement - functionality works without JavaScript
- Keep client-side logic minimal and server-side logic rich
- Embrace the simplicity of multi-page applications with the speed of SPAs
Turbo Drive Principles
- Enable fast page navigation without full page reloads automatically
- Intercept all clicks and form submissions by default
- Maintain scroll position and focus between navigations
- Cache pages intelligently for instant back/forward navigation
- Preserve JavaScript state between page visits
Turbo Drive Configuration
- Disable Turbo Drive selectively with
data-turbo="false" - Control navigation behavior with
data-turbo-actionattributes - Use
data-turbo-permanentto persist elements across navigations - Configure cache behavior with meta tags
- Handle navigation events for custom behavior
Turbo Frames Principles
- Decompose pages into independent segments that update separately
- Scope navigation to frame boundaries automatically
- Enable partial page updates without custom JavaScript
- Support lazy loading for performance optimization
- Maintain proper URL and history management
Turbo Frames Best Practices
- Use meaningful frame IDs that describe their content
- Keep frames focused on a single concern
- Lazy load below-the-fold content with
loading="lazy" - Break out of frames with
data-turbo-frame="_top"when needed - Cache frame responses independently for better performance
Turbo Streams Principles
- Update multiple page elements in a single response
- Support real-time updates via WebSockets or SSE
- Use semantic actions: append, prepend, replace, update, remove
- Target elements by ID for surgical updates
- Broadcast changes from models automatically
Turbo Streams Implementation
- Return Turbo Stream responses from form submissions
- Use
turbo_streamformat in controllers - Broadcast model changes with Action Cable
- Target multiple elements in one response
- Keep stream templates simple and focused
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.
- 1mo ago First seen · 193 lines · 1,209 tokens per session scan A 7b5240f95af7
rails-instructions rails-hotwire.instructions.md is an instructions file published in the GitHub repository levifig/rails-instructions (56 stars, last pushed 1y ago), licensed MIT. It adds 1,209 tokens to every session, about $0.0048 per session on Opus 5.5. 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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