Agent skill

Rails Hotwire Realtime

by marckohlbrugge in marckohlbrugge/37signals-skills

Apply Hotwire, Turbo, Stimulus, and ActionCable best practices for real-time Rails interfaces.

No licenceAuto-check passedBackend & APIs

Install Rails Hotwire Realtime

skills CLI
$ npx skills add marckohlbrugge/37signals-skills --skill rails-hotwire-realtime -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install marckohlbrugge/37signals-skills rails-hotwire-realtime --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/marckohlbrugge/37signals-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/rails-hotwire-realtime .claude/skills/rails-hotwire-realtime && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
rails-hotwire-realtime
GitHub stars
724
Token cost
~1.9k tokens
SKILL.md length
860 words
Files
1
Skills in repo
8
Repo updated
First seen
Licence
None found

At a glance

Apply Hotwire, Turbo, Stimulus, and ActionCable best practices for real-time Rails interfaces.

  • Building Turbo Streams/Frames
  • SKILL.md covers Choose the Right Realtime…, Turbo Defaults, Broadcast Patterns and Reconnect & Catch-Up, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Stimulus interactions

What it does

Rails Hotwire Realtime is an agent skill from marckohlbrugge/37signals-skills. Apply Hotwire, Turbo, Stimulus, and ActionCable best practices for real-time Rails interfaces. Use when building Turbo Streams/Frames, Stimulus interactions, or websocket-driven updates.

Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs, covering Backend development and Realtime and WebSockets. The repository describes itself as: Unofficial agent skills + reference guide that teach AI coding assistants to write Rails the 37signals way — extracted from Fizzy, Campfire, and DHH's code reviews.

When your agent uses it

  • Building Turbo Streams/Frames
  • Stimulus interactions
  • Websocket-driven updates

Example prompts

  • “/rails-hotwire-realtime”

What it can do on your machine

Read from SKILL.md and the folder at commit c58e7d5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Rails Hotwire Realtime loads about 1.9k tokens when it runs. Until then it costs about 52 tokens; SKILL.md has 860 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~52
When it runs · the whole SKILL.md, loaded when a task matches
~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 860 words (~1,938 tokens).

“Use for Turbo/Stimulus/ActionCable architecture and reviews. Patterns from Campfire (cable-heavy chat) and Fizzy (streams-only kanban).”

— opening of SKILL.md by marckohlbrugge
name
rails-hotwire-realtime
disable-model-invocation
true

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/rails-hotwire-realtime of marckohlbrugge/37signals-skills.

Open the folder on GitHubat commit c58e7d5

Compare with similar skills

Rails Hotwire Realtime next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Rails Hotwire Realtime compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Rails Hotwire Realtime this skillmarckohlbrugge/37signals-skills724—~1.9kAutomated safety check: PassNone
Starlettesimonw/research782—~8.6kAutomated safety check: NotesNone
Nitro Server Toolkitantfu/skills6k—~948Automated safety check: PassMIT
Hlive CoreSamHennessy/hlive101—~2.2kAutomated safety check: PassMIT
Phoenix LiveView Patternsgeorgeguimaraes/elixir-agent-tools184—~1.3kAutomated safety check: PassApache-2.0
Mas API ContractAUTO-MAS-Project/AUTO-MAS711—~1.9kAutomated safety check: PassAGPL-3.0

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Categories

Questions about Rails Hotwire Realtime

What does Rails Hotwire Realtime do?

Apply Hotwire, Turbo, Stimulus, and ActionCable best practices for real-time Rails interfaces. Rails Hotwire Realtime is an agent skill from marckohlbrugge/37signals-skills. Apply Hotwire, Turbo, Stimulus, and ActionCable best practices for real-time Rails interfaces.

When should I use Rails Hotwire Realtime?

Rails Hotwire Realtime fits situations like: building Turbo Streams/Frames; stimulus interactions; websocket-driven updates.

How do I install Rails Hotwire Realtime in Claude Code?

Run `npx skills add marckohlbrugge/37signals-skills --skill rails-hotwire-realtime -a claude-code`. Or copy the skill folder (skills/rails-hotwire-realtime in marckohlbrugge/37signals-skills) into .claude/skills/rails-hotwire-realtime in your project. Claude Code loads it when a task matches its description.

How do I install Rails Hotwire Realtime in Codex?

Run `npx skills add marckohlbrugge/37signals-skills --skill rails-hotwire-realtime -a codex`. Or copy the skill folder (skills/rails-hotwire-realtime in marckohlbrugge/37signals-skills) into .agents/skills/rails-hotwire-realtime in your project. Codex loads it when a task matches its description.

Can I use Rails Hotwire Realtime in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add marckohlbrugge/37signals-skills --skill rails-hotwire-realtime -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rails-hotwire-realtime, .gemini/skills/rails-hotwire-realtime, .github/skills/rails-hotwire-realtime and .opencode/skills/rails-hotwire-realtime in your project.

What does Rails Hotwire Realtime need to run?

SKILL.md names no scripts, command-line tools or credentials: Rails Hotwire Realtime is instructions for the agent only.

Does Rails Hotwire Realtime access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Rails Hotwire Realtime safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Rails Hotwire Realtime use?

No licence was found for Rails Hotwire Realtime or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Rails Hotwire Realtime use?

About 1.9k tokens (SKILL.md is roughly 7.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Rails Hotwire Realtime?

Skills that share tags, products or a category with Rails Hotwire Realtime: Starlette (simonw/research, 782 stars), Nitro Server Toolkit (antfu/skills, 6k stars), Hlive Core (SamHennessy/hlive, 101 stars) and Phoenix LiveView Patterns (georgeguimaraes/elixir-agent-tools, 184 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rails Hotwire Realtime?

marckohlbrugge (a GitHub user) maintains it in marckohlbrugge/37signals-skills, which has 724 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on June 9, 2026.

Source: marckohlbrugge/37signals-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.