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Upgrade Audit

Upgrade Audit is a skill for Claude Code from dhruvasagar/ruby-upgrade-toolkit. It costs 63 tokens per session (3,965 once invoked), scanned A, original, no licence file.

A read-only pre-upgrade checker for Ruby and Rails projects that looks for likely breakages, gem compatibility issues, and upgrade scope.

In plain words
What is it for?
Use it to audit a project for a target Ruby or Rails version and assess what may need attention.
Why use it?
It helps you identify upgrade risks before any project files are changed.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the ruby-upgrade-toolkit plugin — 7 skills, 6 commands, 2 agents, 2 hooks shipped together

not rated 14repo 6mo ago A scan 63 tokens no licence

Good fit Use it to audit a project for a target Ruby or Rails version and assess what may need attention.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dhruvasagar/ruby-upgrade-toolkit/audit
View source ↗ dhruvasagar/ruby-upgrade-toolkit
Install

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.

Any agent
npx skills add dhruvasagar/ruby-upgrade-toolkit --skill audit
Clone the repo
git clone --depth 1 https://github.com/dhruvasagar/ruby-upgrade-toolkit

Made for: Claude Code.

Or install ruby-upgrade-toolkit, the plugin that ships this one along with the rest of its 7 skills, 6 commands, 2 agents, 2 hooks.

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 Upgrade Audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/dhruvasagar/ruby-upgrade-toolkit/audit/github.svg)](https://agentmods.dev/skills/dhruvasagar/ruby-upgrade-toolkit/audit)
Your own site
<a href="https://agentmods.dev/skills/dhruvasagar/ruby-upgrade-toolkit/audit"><img src="https://agentmods.dev/badge/skills/dhruvasagar/ruby-upgrade-toolkit/audit/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 Upgrade Audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/dhruvasagar/ruby-upgrade-toolkit/audit"><img src="https://agentmods.dev/badge/skills/dhruvasagar/ruby-upgrade-toolkit/audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,965 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00063 $0.03965
Opus 5.5 $0.00025 $0.01586
Sonnet 5.5 $0.00013 $0.00793
Haiku 4.5 $0.00006 $0.00396

Measured 2mo ago against content hash c29629569a76, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Upgrade Audit 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 2mo 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.

skills/audit/SKILL.md · 330 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 2mo ago First seen · 330 lines · 63 tokens per session scan A c29629569a76

Subscribe to this mod's changes

Upgrade Audit is a skill published in the GitHub repository dhruvasagar/ruby-upgrade-toolkit (14 stars, last pushed 6mo ago), with no licence file. It adds 63 tokens to every session and 3,965 once invoked, about $0.0003 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.

DebuggingLanguagesRuby
Related

Upgrade Audit compared with skills from other repositories

Upgrade Audit next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Upgrade Auditdhruvasagar/ruby-upgrade-toolkitSkill146mo agononeA63Claude Code
sentry-ruby-sdkgetsentry/sentry-for-aiSkill275yesterdayMITA98Claude Code
rigor-type-oraclerigortype/rigorSkill107todayMPL-2.0A72Claude Code, Codex
rigor-rbs-setuprigortype/rigorSkill107todayMPL-2.0A60Claude Code, Codex
error-tracking-rubyPostHog/skillsSkill79yesterdayMITA13Claude Code
sentry-ruby-sdkis-bo/fullstack-forge-skillSkill26d agoApache-2.0A98Claude Code
debug:railsSnakeO/claude-debug-and-refactor-skills-pluginSkill99mo agononeA61Claude Code