Blockchain

Use when building rwsdk applications with route handling, middleware, authentication guards, HTTP method routing, context sharing, and type-safe link generation - covers defineApp, route patterns, interrupters, and Documents

Guide for creating and configuring custom OpenCode agents. Use this skill when you need to define specialized agents with specific system prompts, models, and tool permissions.

This skill should be used when the user asks to "create an indexer", "build a hyperindex", "index blockchain events", "write event handlers", "configure config.yaml", "define schema.graphql", "use envio", "set up hyperindex", "index smart contract events", "create graphql schema for blockchain data", or mentions Envio, HyperIndex, blockchain indexing, or event handler development.

Use when reviewing authentication or authorization code. Provides comprehensive security guidance on JWT validation, token exchange, OAuth 2.0/2.1 compliance, PKCE, Resource Indicators, MCP authorization, session management, and API authentication. Covers critical vulnerabilities including token forwarding, audience validation, algorithm confusion, confused deputy attacks, and authentication bypass. Invoke when analyzing any authentication, authorization, or access control code changes.

This skill should be used when Claude needs to write a feature specification, create acceptance criteria, document requirements, define user stories, or structure feature documentation. Trigger phrases include "write a spec", "create specification", "document requirements", "define acceptance criteria", "write user stories".

Analyze React/Next.js components to extract typography, colors, layout, fonts, spacing systems, and design tokens. Identifies accessibility issues, responsive breakpoints, and component hierarchies.

East programming language - a statically typed, expression-based language embedded in TypeScript. Use when writing East programs with @elaraai/east. Triggers for: (1) Writing East functions with East.function() or East.asyncFunction(), (2) Defining types (IntegerType, StringType, ArrayType, StructType, VariantType, etc.), (3) Using platform functions with East.platform() or East.asyncPlatform(), (4) Compiling East programs with East.compile(), (5) Working with East expressions (arithmetic, collections, control flow), (6) Serializing East IR with .toIR() and EastIR.fromJSON(), (7) Standard library operations (formatting, rounding, generation).

Expert on building decentralized applications with Shelby Protocol storage on Aptos. Helps with dApp architecture, wallet integration (Petra), browser SDK usage, React/Vue integration, file uploads, content delivery, and building Shelby-powered applications. Triggers on keywords Shelby dApp, build on Shelby, Shelby application, Petra wallet, browser storage, web3 app, decentralized app Shelby, React Shelby, Vue Shelby.

Domain-specific configuration profiles for learning resource creation. Defines search strategies, special fields, terminology policies, and content structures for different academic domains: technology, history, science, arts, and general. Use when researcher or writer agents need domain-adapted behavior.

Design system patterns, W3C DTCG 2025.10 token architecture, WCAG 2.2 accessibility standards, and Figma MCP workflows for consistent, accessible UI development

Converts a standard Shadcn/UI component into a HA-aware component. It handles entity binding, state mapping, and registry definition.

Expert in authoring Gherkin-compliant behavior specifications (Given, When, Then). Use when defining executable scenarios for feature specifications or acceptance tests.

Creating and Managing Sub-agents in Claude Code. Design agent personas, define proactive triggers, set tool permissions, structure agent files. Use when building specialized agents for code review, debugging, architecture, or domain-specific tasks.

Export Azure Logic App workflows to the local project. Checks Azure CLI authentication, confirms subscription, and exports workflow definitions, connections, and configuration for a specified Logic App.

WHEN: Context setup, token optimization, MCP/agent configuration requestsWHAT: Project analysis + Preset recommendation + MCP server selection + Agent activation + Config generationWHEN NOT: Status check only → /context-status command

Review test cases for OAuth/OIDC error handling. Covers authorization endpoint errors, token endpoint errors, error response formats, HTTP status codes, and all error codes per OAuth 2.1 and OIDC Core 1.0.

Design and implement RESTful API endpoints following REST principles with resource-based URLs, appropriate HTTP methods, and consistent naming conventions. Use this skill when creating or modifying API route handlers, endpoint definitions, or REST controllers in files like routes.py, api.ts, controllers/, handlers/, or when implementing HTTP methods (GET, POST, PUT, PATCH, DELETE). Also applies when working on API versioning, request/response validation, status code handling, rate limiting, or any backend endpoint logic that serves HTTP requests to frontend clients or external systems.

Implement enterprise Single Sign-On (SSO) authentication supporting multiple identity providers with JWT RS256 tokens, backwards verification, session management, and cross-system permission mapping. Use this skill when building authentication systems that integrate with multiple enterprise SSO providers or when implementing secure token validation with session verification.

Estimate issue complexity before implementation to prevent timeouts. Uses cheap estimation to save expensive implementation tokens.

Use when you need to find code by concept (not just text). Uses Serena MCP for semantic code search across the codebase with minimal token usage. Ideal for understanding architecture, finding authentication flows, or multi-file refactoring.