Agent Skills Hub

metacognition

Enforces structured self-assessment checkpoints to validate approach, mitigate risks, and ensure quality before, during, and after task execution.

acceptance-testing

Plan, implement, and execute user acceptance tests (UAT) and end-to-end scenarios to validate requirements against user-visible behavior.

mutation-test

Run mutation testing to measure test suite effectiveness by introducing code faults and verifying test failure detection.

test-generator

Automated generation of structured, production-ready pytest test suites for Python functions and classes.

testing-frontend

Automate frontend component testing, user interaction simulation, API mocking, and setup of Vitest, React Testing Library, and Vue Test Utils.

java-test

Executes Gradle-based Java tests, filters results for failures and key statistics, and provides concise reports to streamline backend development and debugging.

mutation-testing-js

Mutation testing patterns for JS/TS using Stryker. Analyze branch code to find weak or missing tests, verify test effectiveness, and strengthen Node.js test suites.

web3-testing

Comprehensive smart contract testing skill for Hardhat and Foundry, featuring unit tests, integration suites, gas optimization, fuzzing, and mainnet forking.

jest-testing

Provides Jest testing patterns and best practices for interpreters, parsers, and async TypeScript code in the Lea language repository.

n8n-expression-testing

Validate n8n expression syntax, perform context-aware testing, detect common pitfalls, and optimize data transformations within your workflows.

mutation-testing

Validate test suite effectiveness and uncover weak assertions by introducing code mutations and measuring kill rates. Essential for proving tests genuinely catch bugs rather than just satisfying coverage metrics.

backend-development

Build, optimize, and maintain production-ready backend systems using Node.js, Python, Go, and Rust. Includes API design, database management, security, and DevOps best practices.