Claude Code plugins
4 plugins from public Claude Code marketplaces. Each one bundles skills, slash commands, agents, hooks or MCP servers that install together.
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Configures mewt or muton campaigns, analyzes surviving mutants, and investigates bugs exposed by testing gaps. Use when setting up mutation testing, reviewing campaign results, identifying equivalent mutants, or finding bugs from surviving mutations.
Mutation testing with StrykerJS, Stryker.NET, PIT, mutmut and Mull: one canonical tool per language, plus triage of surviving mutants. Survivor triage classifies why each mutant lived (missing case, weak assertion, equivalent mutant) and drafts the tests that kill it.
functional-testing
Validates test quality beyond coverage: uses Claude subagents to generate intelligent mutations for source code, executes them via the project's native test runner, extracts survived mutants, generates mutation-todos.md with rationale, and persists run history to a SQLite logbook.
Agent pipeline with deterministic quality gates: specifier, coder, cleaner, and hardener stages looped against complexity, coverage, and mutation-testing gates. Ships the /gauntlet command and five stage subagents