Types
Type checking and type generation
mcp-builder
by mcp-use
DEPRECATED: This skill has been replaced by mcp-app-builder. Check if mcp-app-builder is available in the skills folder. If not, install it: npx skills install mcp-use/mcp-use --skill mcp-app-builder Use mcp-app-builder instead of this skill. Build Model Context Protocol (MCP) servers with mcp-use framework. Use when creating MCP servers, defining tools/resources/prompts, working with mcp-use, bootstrapping MCP projects, or when user mentions MCP development, tools, resources, or prompts.
atelier-typescript-api-design
by martinffx
REST API design patterns. Use when designing endpoints, error responses, pagination, versioning, or API structure. Framework-agnostic principles for building consistent, maintainable APIs.
change-tracking
by dotnet
'Implementation details for EF Core change tracking. Use when changing InternalEntityEntry, ChangeDetector, SnapshotFactoryFactory, or related entity state, snapshot, or property accessor code.'
dsql
by awslabs
Build with Aurora DSQL - manage schemas, execute queries, and handle migrations with DSQL-specific requirements. Use when developing a scalable or distributed database/application or user requests DSQL.
aws dsql
by awslabs
Build with Aurora DSQL - manage schemas, execute queries, and handle migrations with DSQL-specific requirements. Use when developing a scalable or distributed database/application or user requests DSQL.
distributed postgres
by awslabs
Build with Aurora DSQL - manage schemas, execute queries, and handle migrations with DSQL-specific requirements. Use when developing a scalable or distributed database/application or user requests DSQL.
aurora dsql
by awslabs
Build with Aurora DSQL - manage schemas, execute queries, and handle migrations with DSQL-specific requirements. Use when developing a scalable or distributed database/application or user requests DSQL.
tui-validate
by mikeyobrien
Validates Terminal User Interface (TUI) output using freeze for screenshot capture and LLM-as-judge for semantic validation. Supports both visual (PNG/SVG) and text-based validation modes.
ralph-operations
by mikeyobrien
Use when managing Ralph orchestration loops, analyzing diagnostic data, debugging hat selection, investigating backpressure, or performing post-mortem analysis
single-or-array-pattern
by EpicenterHQ
Pattern for functions that accept either a single item or an array. Use when creating CRUD operations, batch processing APIs, or factory functions that should flexibly handle one or many inputs.
arktype
by EpicenterHQ
Arktype patterns for discriminated unions using .merge() and .or(), spread key syntax, and type composition. Use when building union types, combining base schemas with variants, or defining command/event schemas with arktype.
documentation
by EpicenterHQ
In-code documentation, folder READMEs, and code comments. Use when writing README.md files, JSDoc comments, or explaining code organization.
incremental-commits
by EpicenterHQ
Break multi-file changes into atomic commits ordered by dependency. Use for refactors, breaking API changes, or features touching 3+ files.
workspace-api
by EpicenterHQ
Workspace API patterns for defineTable, defineKv, versioning, and migrations. Use when defining workspace schemas, adding versions to existing tables/KV stores, or writing migration functions.
factory-function-composition
by EpicenterHQ
Apply factory function patterns to compose clients and services with proper separation of concerns. Use when creating functions that depend on external clients, wrapping resources with domain-specific methods, or refactoring code that mixes client/service/method options together.
sync-construction-async-property-ui-render-gate-pattern
by EpicenterHQ
Sync construction with async property pattern. Use when creating clients that need async initialization but must be exportable from modules and usable synchronously in UI components.
elysia
by EpicenterHQ
Elysia.js server patterns for error handling, status responses, and plugin composition. Use when writing Elysia route handlers, returning HTTP errors, creating plugins, or working with Eden Treaty type safety.
control-flow
by EpicenterHQ
Human-readable control flow patterns for early returns, guard clauses, and linearizing nested logic. Use when refactoring nested conditionals, replacing try-catch with linear flow, or restructuring decision logic.
tauri
by EpicenterHQ
Tauri path handling, cross-platform file operations, and API usage. Use when working with file paths in Tauri frontend code, accessing filesystem APIs, or handling platform differences in desktop apps.
typebox
by EpicenterHQ
TypeBox and TypeMap patterns for schema validation. Use when working with runtime type validation, JSON Schema, or Standard Schema.
services-layer
by EpicenterHQ
Service layer patterns with createTaggedError, namespace exports, and Result types. Use when creating new services, defining domain-specific errors, or understanding the service architecture.
typescript
by EpicenterHQ
TypeScript code style, type co-location, naming conventions (including acronym casing), test organization, and arktype patterns. Use when writing TypeScript code, defining types, naming variables/functions, organizing tests, or working with arktype schemas.
yjs
by EpicenterHQ
Yjs CRDT patterns, shared types, conflict resolution, and meta data structures. Use when building collaborative apps with Yjs, handling Y.Map/Y.Array/Y.Text, implementing drag-and-drop reordering, or optimizing document storage.
drizzle-orm
by EpicenterHQ
Drizzle ORM patterns for type branding and custom types. Use when working with Drizzle column definitions, branded types, or custom type conversions.