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Test Heuristics

Category: Engineering  ·  Sub-category: testing  ·  Last updated:
type:reviewtype:integration
Use when reviewing, designing, triaging, or rationalizing test suites — unit, integration, e2e/UI, exploratory, property-based, contract, snapshot, mutation, or performance tests. Trigger for flakiness triage, false-pass risk, brittleness on refactor, suite pruning, test-pyramid/trophy decisions, exploratory charters, and snapshot review. Routes by activity (triage / review / author / strategize / prune) and layer.

From the source SKILL.md

Practical test-suite review, design, triage, strategy, and pruning for any testing layer a developer writes, runs, debugs, or maintains. Provenance and grounding sources live in skill.json; this file is runtime routing only.

What this skill does

Test Heuristics is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/test-heuristics/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when reviewing, designing, triaging, or rationalizing test suites — unit, integration, e2e/UI, exploratory, property-based, contract, snapshot, mutation, or performance tests. Trigger for flakiness triage, false-pass risk, brittleness on refactor, suite pruning, test-pyramid/trophy decisions, exploratory charters, and snapshot review.

Who uses this skill

The Test Heuristics Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/test-heuristics
curl -L https://claudskills.com/skills/test-heuristics/SKILL.md \
  -o ~/.claude/skills/test-heuristics/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/test-heuristics/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/test-heuristics/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\test-heuristics\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

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Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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