Sales Engineer

Guidelines for building high-performance APIs with Fastify and TypeScript, covering validation, Prisma integration, and testing best practices

Guides the agent through Angular-specific patterns for Ionic app development. Covers project structure, standalone vs NgModule architecture detection, Angular Router integration with Ionic navigation (tabs, side menu, modals), lazy loading, Ionic page lifecycle hooks, reactive forms with Ionic input components, Angular services for state management, route guards, performance optimization, and testing. Do not use for creating a new Ionic app from scratch, upgrading Ionic versions, general Ionic component usage unrelated to Angular, Capacitor plugin integration, or non-Angular frameworks (React, Vue).

Audits built React and Next.js frontends for user-facing defects in code and rendered UI: state gaps, data loss, double submits, focus and keyboard failures, rollback gaps, stale async, accessibility markup, layout resilience, performance setup, typography, motion hazards, and microcopy. Returns file:line findings and a ship verdict. Use when asked to "review this PR for UX bugs", "audit this component", "check my UI", "is this accessible", "design QA this page", or "is this ready to ship". For product decisions use product-design; for agentic apps use ax-audit; for deep type or motion use typography-audit or ui-animation; for the wording of a string rather than whether it is missing or leaky, use copywriting.

Create MCP servers using the C# SDK and .NET project templates. Covers scaffolding, tool/prompt/resource implementation, and transport configuration for stdio and HTTP. USE FOR: creating new MCP server projects, scaffolding with dotnet new mcpserver, adding MCP tools/prompts/resources, choosing stdio vs HTTP transport, configuring MCP hosting in Program.cs, setting up ASP.NET Core MCP endpoints with MapMcp. DO NOT USE FOR: writing tests (use mcp-csharp-test), publishing or deploying (use mcp-csharp-publish), building MCP clients, non-.NET MCP servers.

User research, usability heuristics, user psychology, accessibility, inclusive design, user testing, and UX metrics

Use when writing, reviewing, or refactoring code for maintainability and readability. Triggers on code reviews, naming discussions, function design, error handling, and test writing. Based on Robert C. Martin's Clean Code handbook with modern corrections.