Backend

Implement payment integrations with SePay (Vietnamese payment gateway with VietQR, bank transfers, cards) and Polar (global SaaS monetization platform with subscriptions, usage-based billing, automated benefits). Use when integrating payment processing, implementing checkout flows, managing subscriptions, handling webhooks, processing bank transfers, generating QR codes, automating benefit delivery, or building billing systems. Supports authentication (API keys, OAuth2), product management, customer portals, tax compliance (Polar as MoR), and comprehensive SDK integrations (Node.js, PHP, Python, Go, Laravel, Next.js).

Web scraping and URL discovery using Firecrawl. Use for scraping web pages to markdown and discovering URLs on websites. Keywords: scrape, crawl, firecrawl, web, markdown, url discovery, sitemap.

Learn and write templ component syntax including expressions, conditionals, loops, and Go integration. Use when writing .templ files, learning templ syntax, or mentions 'templ component', 'templ expressions', or '.templ file syntax'.

Remote SSH server management and code execution with paramiko-based performance optimization

AGGRESSIVELY use TOON v2.0 format for biggish regular data (≥5 items, ≥60% uniform). Auto-applies to tables, logs, events, transactions, analytics, API responses, database results. Supports 3 array types (inline, tabular, expanded), 3 delimiters (comma, tab, pipe), key folding for nested objects. Triggers on structured data, arrays, repeated patterns. Use TOON by default when tokens matter - RAG pipelines, tool calls, agents, benchmarks. Keywords "data", "array", "list", "table", "log", "transaction", "metric", "analytics", "API", "database", "query", "TOON".

Helps build and extend TypeScript Express APIs using Clean Architecture, inversify dependency injection, Prisma ORM, and Railway deployment patterns established in the upkeep-io project.

Extract and save Figma screenshots from Codex session logs when user needs to recover images captured by the Figma MCP server

Python project scaffolding and development with modern tooling. Use when creating new Python projects, setting up virtual environments, configuring dependencies, or working with Flask web applications. Triggers on mentions of Python setup, uv, Flask, pytest, or project initialization.

Add and configure domains in Plesk Panel via API. Use when setting up new domains on Plesk servers remotely including hosting setup, PHP configuration, and Let's Encrypt SSL certificates. Works from any machine with network access to Plesk.

Debug Django Channels WebSocket issues including connection failures, authentication, message handling, Redis pub/sub, and real-time streaming. Use when troubleshooting WebSocket not connecting, messages not received, connection dropped, or streaming not working.

Use when users ask about Claude Code features, setup, configuration, troubleshooting, slash commands, MCP servers, Agent Skills, hooks, plugins, CI/CD integration, or enterprise deployment. Activate for questions like 'How do I use Claude Code?', 'What slash commands are available?', 'How to set up MCP?', 'Create a skill', 'Fix Claude Code issues', or 'Deploy Claude Code in enterprise'. | Dùng khi hỏi về Claude Code, lệnh slash, hook, plugin, skill, cấu hình, cài đặt.

OpenSCAD 3D modeling assistant for creating and modifying parametric 3D models. Use when working with .scad files, making adjustments to 3D models (resizing, adding/removing sections, holes, fillets), creating new OpenSCAD geometry, or debugging OpenSCAD code. Supplements the openscad MCP server (mcp__openscad__render_single) with language knowledge and modification patterns.

Goバックエンド開発 - Goイディオム、並行処理、エラーハンドリング、テスト

Create sophisticated economic data analyses and visualizations for higher education stakeholders using FRED (Federal Reserve Economic Data). Use this skill when users request: (1) Analysis of student loan debt, unemployment by education level, or earnings data, (2) Dashboard or visual presentations of higher ed economic indicators, (3) Narrative reports on higher education ROI or economic value, (4) Data-driven communications for institutional stakeholders (trustees, enrollment management, financial aid offices), or (5) Integration of FRED API data into interactive visualizations.

Use this agent when you need to design, implement, or optimize FastAPI backend applications. This includes API endpoint creation, database integration, authentication/authorization implementation, cloud deployment strategies, business logic architecture, performance optimization, and following FastAPI best practices.

Ensures comprehensive test coverage following Rails testing best practices

Maven Modular Architecture with profiles for optional components.Enable/disable modules like Redis, Kafka, RabbitMQ dynamically.

Implementing collision detection, surface snapping, and 3D environment support for StickerNest widgets. Use when the user asks about collision detection, physics, snap points, raycasting, 3D environments, BVH acceleration, Rapier physics, or widget snapping to surfaces. Covers state-of-the-art WebXR APIs, three-mesh-bvh, react-three-rapier, custom environment loading, and hybrid surface detection.

Axum (Rust) web framework patterns for production APIs: routers/extractors, state, middleware, error handling, tracing, graceful shutdown, and testing

This skill should be used when the user asks "what plugins are available", "list data science tools", "what MCP servers can I use", "enable code intelligence", or needs to discover available plugins like serena, context7, or data access skills like wrds and lseg-data.