Master automated billing systems including recurring billing, invoice generation, dunning management, proration, and tax calculation.

Comprehensive writing guide for Angular documentation (adev). Covers Google Technical Writing standards, Angular-specific markdown extensions, code blocks, and components. Use when authoring or reviewing content in adev/src/content.

Ghost Security - Secrets and credentials scanner. Scans codebase for leaked API keys, tokens, passwords, and sensitive data. Detects hardcoded secrets and generates findings with severity and remediation guidance. Use when the user asks to check for leaked secrets, scan for credentials, find hardcoded API keys or passwords, detect exposed .env values, or audit code for sensitive data exposure.

Reverse Thinking - Information Completeness Assessment. Mandatory pre-planning checkpoint that blocks planning until prerequisites are verified. Use when receiving specs, PRDs, tickets, RFCs, architecture designs, or any multi-step engineering task. Integrates with CoVe-style planning pipelines. Invoke BEFORE creating plans, delegating to agents, or defining acceptance criteria.

Swift Concurrency patterns — async/await, actors, tasks, Sendable conformance. Use when writing async/await code, implementing actors, working with structured concurrency, or ensuring data race safety.

Write clear and helpful user guides and tutorials for end users. Use when creating onboarding docs, how-to guides, or FAQ pages. Handles user-focused documentation, screenshots, step-by-step instructions.

Collect Groq debug evidence for support tickets and troubleshooting. Use when encountering persistent issues, preparing support tickets, or collecting diagnostic information for Groq problems. Trigger with phrases like "groq debug", "groq support bundle", "collect groq logs", "groq diagnostic".

Handle Gamma webhooks and events for real-time updates. Use when implementing webhook receivers, processing events, or building real-time Gamma integrations. Trigger with phrases like "gamma webhooks", "gamma events", "gamma notifications", "gamma real-time", "gamma callbacks".

Debug and resolve common Gamma API errors. Use when encountering authentication failures, rate limits, generation errors, or unexpected API responses. Trigger with phrases like "gamma error", "gamma not working", "gamma API error", "gamma debug", "gamma troubleshoot".

Execute comprehensive platform migrations to Databricks from legacy systems. Use when migrating from on-premises Hadoop, other cloud platforms, or legacy data warehouses to Databricks. Trigger with phrases like "migrate to databricks", "hadoop migration", "snowflake to databricks", "legacy migration", "data warehouse migration".

Identify and avoid the top Clay anti-patterns, gotchas, and integration mistakes. Use when reviewing Clay integrations for issues, onboarding new team members, or auditing existing Clay table configurations. Trigger with phrases like "clay mistakes", "clay anti-patterns", "clay pitfalls", "clay what not to do", "clay gotchas", "clay code review".

Draft changelog PRs by collecting GitHub/Slack/Git changes, formatting with templates, running quality gates, and preparing a branch/PR. Use when generating weekly/monthly release notes or when the user asks to create a changelog from recent merges. Trigger with "changelog weekly", "generate release notes", "draft changelog", "create changelog PR".

This skill should be used when the user asks to "create an API route", "add an endpoint", "build a REST API", "handle POST requests", "create route handlers", "stream responses", or needs guidance on Next.js API development in the App Router.

Automatically identify metamorphic properties (symmetry, linearity, additivity, input invariances) from programs or functions. Use when generating metamorphic tests, discovering program properties, validating transformations, or creating test oracles without explicit specifications. Analyzes control flow, data flow, and sample executions to output structured properties for metamorphic test generation and verification.

Generate developer handoff specs from a design. Use when a design is ready for engineering and needs a spec sheet covering layout, design tokens, component props, interaction states, responsive breakpoints, edge cases, and animation details.

This skill should be used when the user asks to "create web roles", "add web roles", "set up web roles", "add roles", "create roles for my site", "manage web roles", "add authenticated role", "add anonymous role", or wants to create web roles for their Power Pages code site. Web roles control access and permissions for site users.

This skill should be used when the user asks to "deploy to power pages", "upload site", "publish site", "deploy site", "push to power pages", "upload code site", or wants to deploy/upload an existing Power Pages code site to a Power Pages environment using PAC CLI.

This skill should be used when the user asks to "add SEO", "add meta tags", "add robots.txt", "add sitemap", "improve SEO", "search engine optimization", "add open graph tags", "add favicon", "make site searchable", or wants to add SEO essentials (robots.txt, sitemap.xml, meta tags) to their Power Pages code site after creating it with /create-site.

Transform user requests into detailed, precise prompts for AI models. Use when users say "promptify", "promptify this", or explicitly request prompt engineering or improvement of their request for better AI responses.