Your approach to handling backend providers. Use this skill when working on files where backend providers comes into play.

Implement comprehensive testing strategies with pytest, fixtures, mocking, and test-driven development for FastAPI applications. Use when writing Python tests, setting up test suites, or implementing testing best practices.

Runs formatting, linting, and tests for the backend.

Write secure, optimized database queries using parameterized statements, proper indexing, and efficient data fetching patterns. Use this skill when writing database queries, ORM query methods, SQL statements, or data access layer code. When working on files containing Prisma queries, TypeORM query builders, raw SQL statements, database transaction logic, eager loading and joins, query optimization code, files implementing data pagination or filtering, cache strategies for expensive queries, or files handling database connection pooling and query timeouts.

Expert in secure backend coding practices specializing in input

Your approach to handling backend state management. Use this skill when working on files where backend state management comes into play.

Backend TDD Agent. Node.js/NestJS 기반 TDD 테스트 작성 및 구현을 담당합니다. 테스트 먼저 작성 후 구현하는 Red-Green-Refactor 사이클을 따릅니다.

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Use when generating tests for backend code (Express routes, MongoDB models, Node services) - analyzes file type, detects test framework from package.json, generates comprehensive tests with setup/teardown and edge case coverage

Generate comprehensive backend tests with Jest/Vitest including fixtures and mocks.

Run isolated test environments for backend changes, manage test data, and verify API endpoints. Use when testing Python backend changes without interfering with production instances.

Your approach to handling backend tests. Use this skill when working on files where backend tests comes into play.

Generate OpenAPI/REST endpoints from tRPC routers. Use when you have a tRPC API but need to expose REST endpoints for third-party integrations, mobile apps, or public API documentation. Provides automatic Swagger UI and OpenAPI spec generation. Choose this when you want type-safe internal APIs (tRPC) with REST fallback for external consumers.

Automatically runs required Go checks after any backend code changes. Ensures go vet, gofmt, and go test pass before commits. Use whenever modifying files in the backend/ directory.

Fast unit testing framework for TypeScript/JavaScript. Use for testing tRPC procedures, Zod schemas, utility functions, and any TypeScript code. Built on Vite with native ESM, TypeScript support, and Jest-compatible API. Choose Vitest over Jest for modern TypeScript projects, especially with Vite-based setups.

Backfill missing GitHub streak dates using the streakify.sh script. Use this when the user asks to backfill dates, fix missing streak days, or catch up on streak commits.

To read logs from a managed background process, fetch recent output (head or tail) for a process so you can inspect its stdout/stderr.

Expert backlog manager that prioritizes work using multi-criteria scoring, analyzes dependencies, and recommends optimal next tasks. Activates when managing backlogs, prioritizing work, adding items, or analyzing what to work on next.

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Bulk backlog scanner that analyzes the entire finans codebase vs CLAUDE.md, identifies ALL gaps, and generates a comprehensive, prioritized, numbered task backlog. Uses broad→narrow pattern.

Build Backstage backend plugins with createBackendPlugin and core services: DI, httpRouter, secure-by-default auth, Knex DB, routes, testing. Use for APIs and background jobs.

Build Backstage frontend plugins with the new Frontend System: createFrontendPlugin, blueprints, routes, Utility APIs, testing. Use for pages, nav, entity content, or cards.

BackstopJS visual regression testing for self-hosted visual comparison

Backtest results interpreter and strategy evaluator. Analyzes historical backtest performance, identifies strengths/weaknesses, and provides actionable recommendations for strategy improvement.

Critical fix for backtest capital accounting when equity curves are inflated or drawdown metrics are meaningless

Converting backtest visualizations from bar indices/timesteps to actual datetime axes for clearer time context

Save backtest results to SQLite database for comparison. Trigger when: (1) tracking backtest history, (2) comparing model performance, (3) querying best backtests.

Comprehensive guidance for interpreting backtest results and detecting overfitting (project)

Phylax Credible Layer assertions backtesting. Runs assertion backtests against historical transactions. Use when validating phylax/credible layer assertions on real chain data or known exploits.

Designs backup and disaster recovery strategies for data and systems

Comprehensive guide to backward compatibility rules for APIs, databases, and data contracts with migration strategies and testing approaches

MicroPython REPL usage, package management, module inspection, and interactive debugging for Universe 2025 (Tufty) Badge. Use when installing MicroPython packages, testing code interactively, checking installed modules, or using the REPL for development.

Create MicroPython applications for Universe 2025 (Tufty) Badge including display graphics, button handling, and MonaOS app structure. Use when building badge apps, creating interactive displays, or developing MicroPython programs.

Generates production-ready BAML applications from natural language requirements. Creates complete type definitions, functions, clients, tests, and framework integrations for data extraction, classification, RAG, and agent workflows. Queries official BoundaryML repositories via MCP for real-time patterns. Supports multimodal inputs (images, audio), 6 programming languages (Python, TypeScript, Ruby, Java, Go, C#), 10+ frameworks, 50-70% token optimization, and 95%+ compilation success.

Manage BAP (Bitcoin Attestation Protocol) identity files using bap-cli. This skill should be used when users need to create, decrypt, list, or extract BAP identity backups, work with .bep encrypted files, or generate test fixtures for Playwright tests involving BAP identities.

Specialized agent for BarqNet backend development. Focuses on Go backend API development, PostgreSQL database management, authentication systems, JWT tokens, OpenVPN integration, and production-ready backend architecture. Use this skill when working on server-side code, API endpoints, database migrations, or backend infrastructure.

You are an expert in barrel file generation and TypeScript/React project organization using barrel-craft. You excel at creating clean, maintainable import structures and automated barrel file generati

Use when starting a fine-tuning project to determine if fine-tuning is needed, or when evaluating whether a base model meets quality thresholds for a specific domain task

Base UI reference and workflows for @base-ui/react (unstyled, accessible React components, composition utilities, and form helpers). Use when implementing Base UI components, portals, styling/state hooks, render-prop composition, eventDetails customization, animations, forms/validation, TypeScript typing, CSP/RTL utilities, or checking Base UI docs, issues, or releases.

Update an existing BaseProject installation by syncing skills, docs, and AGENT.md from the latest upstream. Use when you want to pull the newest BaseProject templates, skills, and guides into your project.

Write, debug, and optimize bash scripts and CLI solutions for macOS using modern tools (fd, rg, sd, jq) with shellcheck compliance. Use when creating shell scripts, one-liners, pipelines, automation, or solving complex CLI tasks.

Guidance for writing portable POSIX-compatible scripts and understanding when to leverage bash-specific features.

Expert helper for bash scripting, debugging, and best practices

Write robust, maintainable bash scripts with proper error handling.

Testing frameworks and patterns for shell scripts, focusing on shunit2 and shellspec.

Proper usage of Bash and file operation tools. Use this skill when executing shell commands, writing files, or when tempted to use echo/cat/heredoc to pipe content to files. Prevents permission circumvention patterns like piping multiline content through echo instead of using Write tool. Covers Bash tool, Write tool, Edit tool, and Read tool best practices.

You are an expert in defensive Bash scripting for production environments. Create safe, portable, and testable shell scripts following modern best practices.

Use when getting started with llmemory document storage and search - covers installation, initialization, adding documents, vector search, hybrid search, semantic search, BM25 full-text search, document management, and building RAG systems with multi-tenant support

This skill should be used when setting up, managing, or troubleshooting Basilica GPU miner operations on Bittensor Subnet 39 (mainnet) or 387 (testnet). Use it for GPU provider tasks including SSH configuration, validator authentication setup, node registration, performance monitoring, uptime optimization, and resolving common issues like SSH access problems, validator discovery failures, or GPU validation errors. Critical for miners struggling with SSH key deployment to GPU nodes or validator connectivity.

Parallel processing for validated assets. Input array of 3-5 assets → simultaneous IDF extraction, package generation, file operations. Replaces serial workflow with parallel execution.