Backend and APIs: skills, plugins, subagents, slash commands and mcp servers

cf-cli cloudflare skill Cloudflare's official CLI for the public API and Workers projects, now available in your editor. Search for commands by task description, manage DNS, storage, and deployments. Claude Code CX Codex Cursor +1 10,700installs popbill NomaDamas skill Prepares the agent to interact with South Korean Popbill services for tax invoices, cash receipts, and business checks in test and live setups. Claude Code CX Codex Cursor +1 4,300installs senior-architect sickn33 skill A skill for designing and reviewing system architecture based on explicit requirements, tradeoffs and evidence. Helps you choose an approach by examining current state, alternatives and risks. Claude Code CX Codex Cursor +1 2,200installs omni-models cheaper-inference skill Queries available AI models across configured providers via OmniRoute. Helps filter models, resolve aliases, and inspect the catalog. Claude Code CX Codex Cursor +1 1,000installs omni-settings cheaper-inference skill Inspects and updates global OmniRoute settings, including system prompts, thinking budgets, IP filters, and proxy rules. Claude Code CX Codex Cursor +1 999installs cli-health cheaper-inference skill Checks server health, component statuses, and metrics for OmniRoute via the CLI. It tracks circuit breakers and provider availability directly in the terminal. Claude Code CX Codex Cursor +1 992installs code-documenter https://github.com/Jeffallan skill Creates and validates code documentation, API specs, and guides. Use it when adding docstrings, JSDoc, OpenAPI files, or documentation sites. Claude Code CX Codex Cursor +1 5,700installs modern-python trailofbits skill Configures Python projects with a modern tooling stack: uv for dependency management, ruff for linting and formatting, ty for type checking. Use when starting new projects, writing scripts, or migrating from legacy tools. Claude Code CX Codex Cursor +1 8,700installs technical-writer VoltAgent Community subagent This subagent creates and maintains API references, user guides, and SDK docs. Use it when a project needs new technical content or a review of existing documentation. Claude Code 4,345installs fullstack-guardian https://github.com/Jeffallan skill Builds security-focused full-stack web features across frontend and backend layers. Useful for shipping authenticated APIs, CRUD forms, and database flows. Claude Code CX Codex Cursor +1 5,600installs prisma-8 prisma skill Guides coding agents through data contracts, migrations, and queries in Prisma 8. Use it in projects running @prisma/orm-postgres, @prisma/orm-sqlite, or @prisma/orm-mongo. Claude Code CX Codex Cursor +1 305installs omni-cli-tools cheaper-inference skill Manages CLI tool integrations via the OmniRoute API. It helps configure tool profiles, inspect runtime statuses, and automate CLI plugin settings. Claude Code CX Codex Cursor +1 969installs omni-agents-a2a cheaper-inference skill Skill for agent-to-agent interaction via JSON-RPC 2.0 protocol. Agents discover each other, pick optimal models by cost and capabilities, check quotas, and monitor system health. Claude Code CX Codex Cursor +1 964installs omni-version-manager cheaper-inference skill Installs, starts, restarts, and monitors embedded OmniRoute services like 9Router and CLIProxyAPI via dedicated API endpoints. Claude Code CX Codex Cursor +1 962installs omni-db-backups cheaper-inference skill Triggers system backups, restores SQLite databases, and manages snapshots in OmniRoute. Useful for automated maintenance and environment repairs via API. Claude Code CX Codex Cursor +1 961installs bullmq-specialist sickn33 skill Guides an agent through BullMQ queues backed by Redis, worker handling, and failure cases. Use it for background jobs, schedules, and dependent work. Claude Code CX Codex Cursor +1 2,100installs sql-queries phuryn skill Generates database queries from natural language descriptions and schema files. Useful for analysts and engineers building data reports across different SQL dialects. Claude Code CX Codex Cursor +1 2,800installs cli-tunnel cheaper-inference skill Manages ngrok, Cloudflare, and custom tunnel connections through the OmniRoute CLI. Handy when you need to expose local servers and inspect active URLs. Claude Code CX Codex Cursor +1 956installs omni-webhooks cheaper-inference skill Manage OmniRoute webhook endpoints, event subscriptions and delivery retries. Use it when you need to create, test or remove a webhook through the API. Claude Code CX Codex Cursor +1 952installs omni-tunnels cheaper-inference skill Creates secure tunnels (ngrok, Cloudflare Tunnel, or custom) to expose OmniRoute to the internet or connect remote agents and CI pipelines. Claude Code CX Codex Cursor +1 944installs gdpr-compliant official github skill This skill guides GDPR-aware work with APIs, user data, logs, retention, and deletion. Use it when a code task involves personal data. GitHub Copilot 1,700installs async-io-model tursodatabase skill Teaches the agent Turso's cooperative async I/O patterns: explicit state machines, IOResult, and avoiding re-entrancy bugs. Claude Code CX Codex Cursor +1 1,300installs kotlin-specialist https://github.com/Jeffallan skill This skill guides Kotlin work with coroutines, Flow, KMP, Compose, and Ktor. Use it when an implementation needs structured concurrency, shared code, or Kotlin UI patterns. Claude Code CX Codex Cursor +1 5,200installs react-pdf vercel-labs skill Renders PDF documents from JSON specs using @react-pdf/renderer. Use it when you need to build invoices, reports, or forms programmatically from structured data. Claude Code CX Codex Cursor +1 2,300installs golang-pkg-go-dev samber skill Queries Go package docs, API signatures, examples, and CVEs via godig and pkg.go.dev. Inspects external dependencies directly in agent chat. Claude Code CX Codex Cursor +1 11,700installs secure-code-guardian https://github.com/Jeffallan skill A skill for implementing custom authentication, input validation, and OWASP Top 10 defences. Use it when building your own authorization system instead of pre-built OAuth. Claude Code CX Codex Cursor +1 5,100installs recsys-pipeline-architect Seth Hobson skill Designs six-stage recommendation, ranking, and feed pipelines. Use it when a system must choose the top K items for a user and context. Claude Code CX Codex Cursor 4,200installs dotnet-timezone official github skill This skill gives C# and .NET guidance for time zones, UTC conversion, DST, and Windows or IANA IDs. Use it for APIs, schedulers, and location lookups. GitHub Copilot 1,600installs shopify-development sickn33 skill Skill for building Shopify apps, extensions and themes using GraphQL Admin API, Shopify CLI, Polaris UI, and Liquid. Routes tasks to the right track: app, extension, theme or combination. Claude Code CX Codex Cursor +1 1,900installs shopify-expert https://github.com/Jeffallan skill Skill for building Shopify themes, apps, and headless storefronts via Storefront API. Useful when you need to assemble a Liquid theme, custom checkout, or Hydrogen storefront. Claude Code CX Codex Cursor +1 5,000installs mvcc tursodatabase skill Architectural reference for experimental MVCC in Turso: row versioning, snapshot isolation, and known memory limits. Useful when working on database internals. Claude Code CX Codex Cursor +1 1,200installs transaction-correctness tursodatabase skill Explains how transactions work in Turso: WAL mechanics, checkpointing, crash recovery, and concurrency rules. Claude Code CX Codex Cursor +1 1,200installs microservices-architect https://github.com/Jeffallan skill Designs distributed system architectures, decomposes monoliths into bounded-context services, and recommends resilience patterns. Useful when architecting microservices, applying DDD, or building observability into cross-service calls. Claude Code CX Codex Cursor +1 4,900installs csharp-developer https://github.com/Jeffallan skill Enforces .NET 8 and C# 12 development practices for ASP.NET Core APIs and Blazor apps. Useful when writing asynchronous services with EF Core and MediatR. Claude Code CX Codex Cursor +1 4,800installs cli-developer https://github.com/Jeffallan skill Skill for command-line development: guides you through building CLI tools with argument parsing, interactive prompts, progress bars and shell completions. Works with commander, click, typer and cobra. Claude Code CX Codex Cursor +1 4,800installs better-auth-security-best-practices better-auth skill Hardens Better Auth deployments by configuring rate limits, CSRF rules, session caching, and OAuth token encryption. Claude Code CX Codex Cursor +1 47,700installs rag-architect https://github.com/Jeffallan skill Designs production RAG systems: chunks documents, generates embeddings, configures vector stores, builds hybrid search pipelines, and evaluates retrieval quality. Claude Code CX Codex Cursor +1 4,700installs rails-expert https://github.com/Jeffallan skill Rails 7+ skill for Hotwire, Sidekiq, and Active Record optimization. Guides query tuning, Turbo Frames, and RSpec test suites. Claude Code CX Codex Cursor +1 4,700installs dotnet-core-expert https://github.com/Jeffallan skill A Claude Code skill that steers the agent through a .NET 8 backend: minimal APIs, clean architecture, EF Core, CQRS with MediatR and JWT auth, from requirements to dotnet test. Claude Code CX Codex Cursor +1 4,700installs email-and-password-best-practices better-auth skill Configures email verification, password reset flows, and password policies in Better Auth. Helpful when adding credential authentication to your backend. Claude Code CX Codex Cursor +1 46,600installs