DeFi

Converts BPMN 2.0 XML to PNG diagram images. Use when user provides BPMN XML content or file path and asks to visualize, render, or create a diagram from a BPMN process definition.

Error modeling and recovery with TaggedError, catchTag(s), mapError, and retry schedules. Use when defining errors or adding resilience.

Use Lockplane for safe database schema management - define schemas in .lp.sql files, validate, and apply with shadow DB testing

CRITICAL: Use this skill when creating/debugging React UI components, Radix UI, forms, modals, or drag & drop.AUTO-ACTIVATE when user mentions (FR/EN): - select, Select, SelectValue, SelectItem, Radix - modal, modale, dialog, Dialog, DialogContent - form, formulaire, validation, Zod, React Hook Form, shadcn - drag, drop, DnD, @dnd-kit, sortable, réordonner - UI bug, composant, component, affiche ID, shows ID, undefined - Button, Input, Label, Checkbox, Switch, Badge, Card - créer composant, create component, nouveau composantThis skill contains TESTED patterns for Radix UI Select (ID vs Name), Modal CRUD templates, Drag & Drop with @dnd-kit, Form validation with Zod + shadcn/ui Form.

Shape the value proposition narrative tying customer needs, solution benefits, and proof points together.

Generates gRPC/HTTP service handlers for go-kratos microservices. Creates service structs, handler methods, and integrates with protobuf definitions. Use when implementing service layer for kratos services.

Implement comprehensive input validation on both client and server sides, using allowlists over blocklists, sanitizing user input, and providing specific error messages to prevent security vulnerabilities. Use this skill when writing validation logic for forms, API endpoints, function parameters, or any user input. Use this skill when implementing server-side validation to ensure data integrity and security, adding client-side validation for immediate user feedback, or sanitizing input to prevent injection attacks. Use this skill when working with form components, API route handlers, data processing functions, or validation schemas. Use this skill when defining validation rules for data types, formats, ranges, required fields, or business logic constraints across all application entry points.

Automatically applies when creating FastAPI endpoints, routers, and API structures. Enforces best practices for endpoint definitions, dependency injection, error handling, and documentation.

Type-safe UI component library for the East language. Use when writing East programs that define user interfaces with declarative components. Triggers for: (1) Writing East programs with @elaraai/east-ui, (2) Creating layouts with Box, Flex, Stack, Grid, (3) Forms with Input, Select, Checkbox, Switch, Slider, (4) Data display with Table, TreeView, DataList, Gantt, Planner, (5) Charts with Chart.Line, Chart.Bar, Chart.Area, Chart.Pie, Chart.Scatter, (6) Overlays with Dialog, Drawer, Popover, Menu, Tooltip, (7) State management with State.readTyped, State.writeTyped.

Build mobile-first, responsive layouts with fluid grids, standard breakpoints, relative units, and touch-friendly design. Use this skill when creating or modifying layouts that need to work across different screen sizes. When working on responsive styles, breakpoint definitions, media queries, or mobile/tablet/desktop layouts. When using percentage-based widths, rem/em units, or viewport units. When ensuring touch targets are appropriately sized, typography is readable at all sizes, or content is prioritized for mobile screens.

Design and implement RESTful API endpoints with proper HTTP methods, status codes, and consistent naming conventions. Use this skill when creating or modifying API routes, endpoints, or server-side request handlers. When working on files in src/pages/api/, files containing API route definitions, files implementing REST endpoints, files handling HTTP requests and responses, server middleware for API requests, API authentication and authorization logic, and files defining API versioning strategies. When designing URL structures for resources, implementing query parameter handling for filtering/sorting/pagination, setting up rate limiting for API endpoints, or configuring CORS and API security headers.

Define database models and schemas with proper naming, data types, constraints, relationships, and indexing strategies. Use this skill when creating or modifying database models, entity definitions, or schema files. When working on files like models.py, models/*.ts, entities/*.ts, schema.prisma, or ORM model definitions. When defining table structures, setting up foreign key relationships, adding database constraints (NOT NULL, UNIQUE), choosing appropriate data types, or implementing model-level validation.

Generates protobuf API definitions for go-kratos microservices with HTTP annotations, validation rules, and OpenAPI documentation. Use when defining service contracts and APIs.

Generate type-safe API clients from OpenAPI/Swagger specifications or API documentation. Use when users need to create TypeScript or Python API clients with Zod/Pydantic validation, retry logic, error handling, and proper typing. Supports REST APIs, generates from OpenAPI specs or manual endpoint definitions.

Maintains SnowTower project documentation, README, and Claude configuration. Use when updating documentation, auditing .claude folder contents, syncing README with actual project state, or reviewing agent/pattern definitions. Triggers on mentions of documentation, README, maintenance, or .claude folder updates.

This skill is used to verify Android features against acceptance criteria, catch regressions and define tests that reflect real device behaviour.

Define and use custom HTML elements. Use when creating new components, defining custom tags, or using project-specific elements beyond standard HTML5.

Create ticket directories with 1-definition.md from PRD and planning docs. Use this skill to initialize new tickets with self-contained context, relationships, testing draft, and expectations.

Write Gherkin feature files and step definitions for BDD

Generate realistic fake data from JSON schemas, producing 1-50 valid records that conform exactly to the schema. Use when creating sample datasets from schema definitions, populating test databases, or generating example API responses. Returns only valid JSON that passes schema validation.