regression-suite

regression-suite is a skill for Claude Code from IdoCohen560/claude-unity-game-studio. It costs 47 tokens per session (2,076 once invoked), scanned A, a copy of regression-suite, MIT.

A maintained list of tests covering a game's critical paths and previously fixed bugs.

In plain words
What is it for?
Use it after bug fixes, during sprint reviews, or before a release to audit regression coverage.
Why use it?
It helps prevent old bugs from returning and shows where new features have created testing gaps.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it after bug fixes, during sprint reviews, or before a release to audit regression coverage.

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Install with agentmods
npx agentmods add skills/idocohen560/claude-unity-game-studio/regression-suite
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 IdoCohen560/claude-unity-game-studio --skill regression-suite
Clone the repo
git clone --depth 1 https://github.com/IdoCohen560/claude-unity-game-studio

Made for: Claude Code.

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.

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README.md
[![agentmods](https://agentmods.dev/badge/skills/idocohen560/claude-unity-game-studio/regression-suite/github.svg)](https://agentmods.dev/skills/idocohen560/claude-unity-game-studio/regression-suite)
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agentmods 80×15 button for regression-suite

Your own site · 80×15
<a href="https://agentmods.dev/skills/idocohen560/claude-unity-game-studio/regression-suite"><img src="https://agentmods.dev/badge/skills/idocohen560/claude-unity-game-studio/regression-suite.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,076 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 97% copy Near-identical to another mod 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 $0.00047 $0.02076
Opus 5 $0.00023 $0.01038
Sonnet 5 $0.00009 $0.00415
Haiku 4.5 $0.00005 $0.00208

Measured 5d ago against content hash e5f923ba3224, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

regression-suite 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 5d 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.

Origin

This is a copy

97% identical to regression-suite — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

examples/my-first-game/.claude/skills/regression-suite/SKILL.md · 251 lines

How it starts

The opening of the file, as written. The whole thing — 251 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Regression Suite

This skill ensures that every bug fix is backed by a test that would have caught the original bug — and that the regression suite stays current as the game evolves. It also detects when new features have been added without corresponding regression coverage.

A regression suite is not a new test category — it is a curated list of tests already in tests/ that collectively cover the game's critical paths and known failure points. This skill maintains that list.

Output: tests/regression-suite.md

When to run:

  • After fixing a bug (confirm a regression test was written or identify gap)
  • Before a release gate (/gate-check polish requires regression suite exists)
  • As part of sprint close to detect coverage drift

1. Parse Arguments

Modes:

  • /regression-suite update — scan new bug fixes this sprint and check for regression test presence; add new tests to the suite manifest
  • /regression-suite audit — full audit of all GDD critical paths vs. existing test coverage; flag paths with no regression test
  • /regression-suite report — read-only status report (no writes); suitable for sprint reviews
  • No argument — run update if a sprint is active, else audit

2. Load Context

Step 2a — Load existing regression suite

Read tests/regression-suite.md if it exists. Extract:

  • Total registered regression tests
  • Last updated date
  • Any tests flagged as STALE or QUARANTINED

If it does not exist: note "No regression suite found — will create one."

Step 2b — Load test inventory

Glob all test files:

tests/unit/**/*_test.*
tests/integration/**/*_test.*
tests/regression/**/*

For each file, note the system (from directory path) and file name. Do not read test file contents unless needed for name-to-test mapping.

Step 2c — Load GDD critical paths

For audit mode: read design/gdd/systems-index.md to get all systems. For each MVP-tier system, read its GDD and extract:

  • Acceptance Criteria (these define the critical paths)
  • Formulas section (formulas must have regression tests)
  • Edge Cases section (known edge cases should have regression tests)

Read the full file on GitHub · 251 lines

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. 5d ago First seen · 251 lines · 47 tokens per session scan A e5f923ba3224

Subscribe to this mod's changes

regression-suite is a skill published in the GitHub repository IdoCohen560/claude-unity-game-studio (18 stars, last pushed 2mo ago), licensed MIT. It adds 47 tokens to every session and 2,076 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to regression-suite, differing in 10 lines, and is treated as a copy.

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