Measuring test quality by mutating code and checking if tests catch mutations.
From testingnpx claudepluginhub sethdford/claude-skills --plugin engineer-testingThis skill uses the workspace's default tool permissions.
Enables AI agents to execute x402 payments with per-task budgets, spending controls, and non-custodial wallets via MCP tools. Use when agents pay for APIs, services, or other agents.
Designs and optimizes AI agent action spaces, tool definitions, observation formats, error recovery, and context for higher task completion rates.
Compares coding agents like Claude Code and Aider on custom YAML-defined codebase tasks using git worktrees, measuring pass rate, cost, time, and consistency.
Technique to measure how well tests detect bugs by injecting mutations.
You are using mutation testing to validate test quality. High mutation score means tests actually verify behavior.