squad: Skill for Claude Code

.copilot/skills/test-discipline/SKILL.md

test-discipline is a skill for Claude Code, Codex from bradygaster/squad. It costs 17 tokens per session (346 once invoked), scanned A, a copy of test-discipline, MIT.

A testing rule for software changes that affect APIs, which are the public functions or interfaces other code relies on.

In plain words
What is it for?
It helps update tests when API signatures change, keep expected file counts and arrays accurate, and diagnose CI failures caused by stale assertions.
Why use it?
It keeps tests aligned with changed interfaces and files, preventing outdated checks from blocking continuous integration, the automated build-and-test process.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

This is bradygaster/squad's own configuration. It tells Claude Code and Codex how to work on squad 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 squad configures →

About the project

bradygaster/squad is a tool that creates a human-directed team of AI development agents inside a project repository through GitHub Copilot. Developers use it to delegate work among persistent specialists such as frontend, backend, testing, and lead agents while retaining responsibility for decisions and review. The catalogue entries are the skills, agents, and instructions that define and coordinate those team members.

bradygaster/squad · 3,295 stars · on GitHub · bradygaster.github.io

Reuse

Borrowing it

Nothing to install: this file belongs to bradygaster/squad. 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/bradygaster/squad/dev/.copilot/skills/test-discipline/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/bradygaster/squad

Made for: Claude Code, Codex.

Wrote this? Show the measurements

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agentmods badge for test-discipline

README.md
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agentmods 80×15 button for test-discipline

Your own site · 80×15
<a href="https://agentmods.dev/skills/bradygaster/squad/test-discipline"><img src="https://agentmods.dev/badge/skills/bradygaster/squad/test-discipline.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 346 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 100% 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 $0.00017 $0.00346
Opus 5.5 $0.00007 $0.00138
Sonnet 5.5 $0.00003 $0.00069
Haiku 4.5 $0.00002 $0.00035

Measured 1mo ago against content hash d84983f8e881, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-discipline 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 1mo 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

100% identical to test-discipline — 48 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.

.copilot/skills/test-discipline/SKILL.md · 40 lines

What it actually says

Context

Use this skill whenever a change affects an API, public interface, workflow contract, generated artifact, or user-observable behavior. A passing status-only test is not evidence that the intended artifact or contract is correct.

Patterns

  • Update tests in the same change as an API, signature, export, or public-interface change.
  • Make assertions name and inspect the offending artifact, output, or configuration field—not just an exit code or broad success status.
  • Mutation-test critical gates by changing the real source or emitted artifact and proving the assertion turns red.
  • Exercise every caller path for a changed parser, normalizer, or helper; isolated unit coverage can miss the integration path that invokes it differently.
  • Reproduce working-tree-only failures locally when the contract depends on index, filesystem, line-ending, or generated-output state.
  • Keep expected inventory arrays synchronized with the files they enumerate.

Examples

A workflow-compilation test mutates the source workflow, compiles it, and inspects the emitted safe-output contract. A repair-script test constructs the actual index/blob/worktree state that the repair routine must handle instead of a simplified fixture.

Anti-Patterns

  • Calling a test sufficient because it observes only a successful process exit
  • Mutating a hand-built fixture instead of the source or artifact protected by the gate
  • Testing a helper while omitting production callers
  • Treating a local checkout defect as something CI alone can validate
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. 1mo ago Changed · +2 lines · +5 tokens per session d84983f8e881
  2. 1mo ago Changed d9a545bdbaa4
  3. 1mo ago First seen · 38 lines · 12 tokens per session scan A 6efe81cabcd2

Subscribe to this mod's changes

test-discipline is a skill published in the GitHub repository bradygaster/squad (3,295 stars, last pushed today), licensed MIT. It adds 17 tokens to every session and 346 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to test-discipline, differing in 48 lines, and is treated as a copy.

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