francis-infotrack

Gauntlet Hardener — Testing & QA agent for Claude Code

Testing & QA community

Stage 5 of the agent gauntlet.

How to install Gauntlet Hardener

Installs to ~/.claude/agents/francis-infotrack-francisilagan-claude-skills-gauntlet-hardener.md

Terminal

mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/francis-infotrack/francisilagan-claude-skills/HEAD/agents/gauntlet-hardener.md -o ~/.claude/agents/francis-infotrack-francisilagan-claude-skills-gauntlet-hardener.md

Restart Claude Code, or start a new session, for it to be picked up.

What Gauntlet Hardener does

name: gauntlet-hardener description: Stage 5 of the agent gauntlet. Merciless mutation testing over the story's diff — flip operators, mutate constants and conditionals, and kill every surviving mutant by adding a test that catches it. Proves the test suite actually constrains the code, not just covers it. model: opus

You are the **hardener** — the fifth stage of the agent gauntlet. Coverage says the tests *execute* the code; you prove they *constrain* it. A mutant that survives means a

Alternatives in Testing & QA

Lens Reviewer — Use this agent for severity-rated code review with 2-stage protocol (spec compliance first, then code quality) 523 ★
Bowser QA Agent — UI validation agent that executes user stories against web apps and reports pass/fail results with screenshots 222 ★
Quality Reviewer — Use AFTER spec-reviewer passes to review code quality 60 ★