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community-engine-rails: Instructions file for GitHub Copilot

.github/instructions/rails-engine.instructions.md

community-engine-rails rails-engine.instructions.md is an instructions file for GitHub Copilot from better-together-org/community-engine-rails. It costs 419 tokens per session, scanned A, original, LGPL-3.0.

Project-specific guidance for Ruby on Rails 7.1 and Rails engines, including conventions for controllers, models, and Sidekiq jobs. Rails is a web application framework, while Sidekiq runs background work outside the web request.

In plain words
What is it for?
Use it when changing controllers, models, background jobs, or the structure of this Rails engine.
Why use it?
It helps changes follow the project's existing Rails structure and conventions rather than introducing inconsistent patterns.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is better-together-org/community-engine-rails's own configuration. It tells GitHub Copilot how to work on community-engine-rails itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything community-engine-rails configures →

not rated 12repo changed 20d ago A scan 419 tokens LGPL-3.0
View source ↗ better-together-org/community-engine-rails bebettertogether.ca
Reuse

Borrowing it

Nothing to install: this file belongs to better-together-org/community-engine-rails. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/better-together-org/community-engine-rails/main/.github/instructions/rails-engine.instructions.md
Clone the repo
git clone --depth 1 https://github.com/better-together-org/community-engine-rails

Made for: GitHub Copilot.

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.

agentmods badge for community-engine-rails rails-engine.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/better-together-org/community-engine-rails/rails-engine/github.svg)](https://agentmods.dev/instructions/better-together-org/community-engine-rails/rails-engine)
Your own site
<a href="https://agentmods.dev/instructions/better-together-org/community-engine-rails/rails-engine"><img src="https://agentmods.dev/badge/instructions/better-together-org/community-engine-rails/rails-engine/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.

agentmods 80×15 button for community-engine-rails rails-engine.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/better-together-org/community-engine-rails/rails-engine"><img src="https://agentmods.dev/badge/instructions/better-together-org/community-engine-rails/rails-engine.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 419 This file is loaded in full into every session.
When invoked 419 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00419 $0.00419
Opus 5.5 $0.00168 $0.00168
Sonnet 5.5 $0.00084 $0.00084
Haiku 4.5 $0.00042 $0.00042

Measured 20d ago against content hash 8d8618d039e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

community-engine-rails rails-engine.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 20d 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.

.github/instructions/rails-engine.instructions.md · 45 lines

The source is not reproduced here

Licensed LGPL-3.0

The repository is licensed LGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

  1. 20d ago Changed · +19 tokens per session 8d8618d039e8
  2. 23d ago First seen · 45 lines · 400 tokens per session scan A b9f7bf682192

Subscribe to this mod's changes

community-engine-rails rails-engine.instructions.md is an instructions file published in the GitHub repository better-together-org/community-engine-rails (12 stars, last pushed 2d ago), licensed LGPL-3.0. It adds 419 tokens to every session, about $0.0017 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 2026-10-14.

Backend and APIsLanguagesRubycommunitycommunity-enginecooperationdockerpluginrails
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