# RailsHealth Guides

https://yo8mr.hatchboxapp.com/guides

Every guide below is also available as Markdown at its own URL, either with an
`Accept: text/markdown` header or by appending `.md`.

## Guides, newest first

### The pre-launch Rails health checklist

A pragmatic pre-launch checklist for Rails apps — security checks before going to production, handoff checks for client work, acquisition due diligence, and on-call readiness.

https://yo8mr.hatchboxapp.com/guides/pre-launch-rails-health-checklist · Published 2026-05-15 · 6 min read

### Planning a Rails version upgrade (without burning a quarter)

How to plan a Rails version upgrade — the pre-upgrade checks that decide the timeline, the dual-boot strategy, when to upgrade incrementally vs. in one go, and when to pay for help.

https://yo8mr.hatchboxapp.com/guides/planning-a-rails-version-upgrade · Published 2026-05-14 · 6 min read

### What to do with bundler-audit's output (after the panic)

A practical guide to triaging bundler-audit advisories: which ones are exploitable in your context, when to update, when to patch, and when it's safe to wait.

https://yo8mr.hatchboxapp.com/guides/what-to-do-with-bundler-audit-output · Published 2026-05-13 · 6 min read

### Auditing a Rails app you just inherited

How to audit an inherited Rails application: the first-hour checks, the security cut, the tests question, the infrastructure questions, and how to turn the result into a plan.

https://yo8mr.hatchboxapp.com/guides/auditing-a-rails-app-you-inherited · Published 2026-05-12 · 6 min read

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RailsHealth — automated health checks for Rails applications: https://yo8mr.hatchboxapp.com/
Site summary for agents: https://yo8mr.hatchboxapp.com/llms.txt