Explore skills

DCB0160 compliance walkthrough for Digital Clinical Safety Officers and NHS/health organisations deploying health IT systems. Guides through NHS England's mandatory Clinical Risk Management Standard for deployment — deployment safety case, integration hazards, local configuration risks, and staff training requirements.

Analyze the outcome of a product experiment using control and test results, effect size, and statistical evidence. Use this skill when the user has experiment results and needs a clear readout of what happened.

HTML, HTMX, and CSS best practices following CUBE CSS methodology and Every Layout primitives. Use when working with HTML templates, HTMX interactions, CSS styling, or building server-rendered UI components.

Define the primary metric, secondary metrics, guardrails, and success criteria for a product experiment. Use this skill when the user has a hypothesis or planned test but has not yet defined how success should be measured.

SQL coding best practices and patterns. Use when working with SQL files, writing migrations, or reviewing schema design.

Rules for writing and updating documentation. Use for any non-trivial documentation task in README.md, markdown files, text files, and code comments.

Best practices for Go project Makefiles. Use when creating or modifying a Go project Makefile: adding/reviewing targets, PHONY declarations, tab indentation, docker compose v2 targets.

Comprehensive testing specialist for all levels and types. Use when writing unit, integration, E2E, performance, or security tests; creating test strategies and plans; analyzing test coverage; building automation frameworks; managing defects; debugging test failures; manual testing (exploratory, usability, accessibility); scaling CI/CD test pipelines.

Evaluate AI model capabilities, limitations, and trade-offs relevant to a product decision. Use this skill when a team needs to understand what an AI model can and cannot reliably do for their use case.

Map and analyze the competitive landscape to understand the competitive environment, key players, and strategic implications. Use this skill when a team needs a structured view of who they compete with and how the landscape is evolving.

Analyze the competitive landscape and define a clear positioning and differentiation angle for the product. Use this skill when a team needs to understand how they stand out and why customers should choose them.

Assist Arthur with human-reviewed job applications using local private profile data, document manifests, browser automation, and strict stop-before-submit rules.