DeFi

Use when working with Ruby metaprogramming features including dynamic method definition, method_missing, class_eval, define_method, and reflection.

Writing effective step definitions and organizing test code

Use when designing GraphQL schemas with Absinthe. Covers type definitions, interfaces, unions, enums, and schema organization patterns.

Define routes and URL helpers in Phoenix applications including resources, scopes, pipelines, and verified routes

Use when defining data structures using Ecto schemas including fields, associations, embedded schemas, and schema metadata. Use for modeling domain data in Elixir applications.

Use when objective-C protocols for defining interfaces and categories for extending classes, including formal protocols, optional methods, class extensions, and patterns for modular, reusable code design.

Use when defining and running multi-container Docker applications with Docker Compose YAML configuration.

Use when configuring GitLab CI/CD pipelines, defining stages, or setting up workflow rules. Covers pipeline structure, stage ordering, and execution flow.

Use when writing effective BDD scenarios including acceptance criteria, edge cases, and scenario organization. Use when defining behavior specifications.

Create a SHIP.md document - a concrete plan for finishing a project. Analyzes the codebase, defines what "done" means, breaks work into phases with small steps. No motivational fluff - just the plan. Triggers on "help me ship this", "create a ship document", "help me finish this project", "I'm stuck on this project", or when a user needs a clear completion plan.

Implementation strategy selection framework with meta-cognitive approach, verification levels, and integration point definitions. Use when planning implementation strategy, selecting development approach, or defining verification criteria.

Guides subagent coordination through implementation workflows. Use when orchestrating multiple agents, managing workflow phases, or determining autonomous execution mode. Defines scale determination, document requirements, and stop points.

Generate new OAuth integration providers for Dafthunk with backend providers, type definitions, frontend configurations, and integration nodes

AWS Cloud Development Kit (CDK) expert for building cloud infrastructure with TypeScript/Python. Use when creating CDK stacks, defining CDK constructs, implementing infrastructure as code, or when the user mentions CDK, CloudFormation, IaC, cdk synth, cdk deploy, or wants to define AWS infrastructure programmatically. Covers CDK app structure, construct patterns, stack composition, and deployment workflows.

Amazon ECS API specification reference. Use when implementing ECS-compatible APIs in KECS to accurately reproduce request/response structures, parameters, error codes, and behaviors. Reference for implementing APIs like CreateCluster, CreateService, RunTask, RegisterTaskDefinition.

Prisma ORM patterns including Prisma Client usage, queries, mutations, relations, transactions, and schema management. Use when working with Prisma database operations or schema definitions.

Tool and function calling patterns with LangChain4j. Define tools, handle function calls, and integrate with LLM agents. Use when building agentic applications that interact with tools.

MANDATORY for creating branches, commits, or pull requests - defines commit message formats, branching conventions, and PR best practices. ALWAYS consult this skill before ANY mutating git operation.

Guide architectural decisions and PLAN.md updates using Flow framework. Use when user discusses "architecture", "how should we architect", "design patterns", "how should we structure", "how do we structure", "technology choice", "should we use", "DO/DON'T rules", "update architecture", or wants to update Architecture section in PLAN.md. Helps document architectural decisions, update DO/DON'T guidelines, define scope boundaries, and record technology choices during brainstorming.

MANDATORY for code review, suggestions, and quality assessment. Defines priority order, bad smells, and review standards.