Testing & Security

Database schema validation, data integrity testing, migration testing, transaction isolation, and query performance. Use when testing data persistence, ensuring referential integrity, or validating database migrations.

Monitor dbt execution using the dbt Artifacts package. Use this skill when you need to track test and model execution history, analyze run patterns over time, monitor data quality metrics, or enable programmatic access to dbt execution metadata across any dbt version or platform.

Apply context-driven testing principles where practices are chosen based on project context, not universal "best practices". Use when making testing decisions, questioning dogma, or adapting approaches to specific project needs.

Advanced visual regression testing with pixel-perfect comparison, AI-powered diff analysis, responsive design validation, and cross-browser visual consistency. Use when detecting UI regressions, validating designs, or ensuring visual consistency.

WCAG 2.2 compliance testing, screen reader validation, and inclusive design verification. Use when ensuring legal compliance (ADA, Section 508), testing for disabilities, or building accessible applications for 1 billion disabled users globally.

Using AI agents as force multipliers in quality work. Use when designing autonomous testing systems, implementing PACT principles, or scaling quality engineering with intelligent agents. Core skill for all QE agents in the fleet.

Apply the Holistic Testing Model evolved with PACT (Proactive, Autonomous, Collaborative, Targeted) principles. Use when designing comprehensive test strategies for Classical, AI-assisted, Agent based, or Agentic Systems building quality into the team, or implementing whole-team quality practices.

Apply both London and Chicago school TDD approaches. Use when practicing test-driven development, understanding different TDD philosophies, or choosing the right testing style for your context.

Use when writing or updating tests (Python, JS/Hoot, integration, or tours).

Use when running or gating tests; standardizes uv run commands and JSON checks.

Comprehensive guide for creating REST API endpoints in Bruno. Use when working with Bruno collections, creating .bru files, configuring API endpoints, setting up authentication, writing pre/post-request scripts, organizing Bruno collections, or testing REST APIs with Bruno.

Run Tecton plan and tests via Pants in the data-science repo. Handles long-running commands with proper output capture to avoid truncation.

A skill that helps review code for best practices, bugs, and security issues

Use when building e2e tests with Playwright, under deadline pressure to ship incomplete coverage, or struggling with wait strategies and mock-vs-reality tradeoffs - provides patterns for edge case coverage, deterministic waits, and strategic mocking decisions

Expert on Plaid Auth product for bank account authentication and verification. Covers account and routing number retrieval, account ownership verification, balance checks, and integration patterns. Invoke when user mentions Plaid Auth, ACH verification, bank account verification, or routing numbers.

Expert chaos engineer specializing in controlled failure injection, resilience testing, and building antifragile systems. Masters chaos experiments, game day planning, and continuous resilience improvement with focus on learning from failure.

Expert on Model Context Protocol (MCP) integration, MCP servers, installation, configuration, and authentication. Triggers when user mentions MCP, MCP servers, installing MCP, connecting tools, MCP resources, MCP prompts, or remote/local MCP servers.

Express.js security audit patterns. Load when reviewing Express apps. Covers Helmet.js, CORS, body-parser limits, auth middleware, and common Express security mistakes.

Production-grade API design patterns for REST, GraphQL, and gRPC. Covers API architecture, OpenAPI/Swagger specs, versioning strategies, authentication flows, rate limiting, pagination, error handling, and documentation best practices for modern API development.

Expert accessibility tester specializing in WCAG compliance, inclusive design, and universal access. Masters screen reader compatibility, keyboard navigation, and assistive technology integration with focus on creating barrier-free digital experiences.