Skill UI

This skill enforces a rigorous data validation protocol by establishing hard boundaries at every point data enters the system (API requests, user input, environment variables, webhooks, etc.). It mandates a four-phase process: detection, trust classification, mandatory filtering (schema validation, sanitization, type checking), and final verification. This prevents untrusted data from reaching core business logic, mitigating risks like SQL injection and XSS.

This skill generates production-grade JUnit 5 unit and integration tests in Java. It covers assertions, parameterized tests, lifecycle hooks, mocking with Mockito, and nested tests. Ideal for developers needing robust testing strategies and best practices for Java projects.

Drafts high-engagement, long-form LinkedIn posts using 16 reverse-engineered hook formulas. Instead of writing randomly, the skill focuses on the desired outcome (comments, reposts, likes, or saves). It integrates the user's voice, adheres to modern formatting rules, and includes an AI-tell scrub pass to ensure the content reads authentically and humanly.

This skill provides comprehensive strategies and technical blueprints for monetizing digital products, especially SaaS platforms. It covers everything from defining advanced pricing models (freemium, value-based pricing) and optimizing revenue flows (LTV/CAC, churn prevention) to practical Stripe integrations. Use it when you need to set up subscription plans, process webhooks, or implement automated billing cycles for your software.

Validate and fix n8n expression syntax in workflows. Covers {{}} syntax, $json/$node variables, webhook data access, and common pitfalls like Code nodes and credential fields. Includes practical examples for webhook-to-Slack and HTTP-to-Email integrations.

Proven architectural patterns for building n8n workflows, including webhook processing, API integration, database operations, AI agent workflows, and scheduled tasks. Guides pattern selection and implementation.

This skill enables seamless integration between Odoo and Shopify platforms. It guides users to synchronize product catalogs, real-time inventory levels, incoming orders, and customer data. The process covers using official Odoo connectors or building custom integrations via Shopify REST and Odoo XMLRPC APIs, including webhook implementation and Python code snippets for automation.

API-first control plane for reply-aware cold outbound email workflows, managing inboxes, contacts, templates, sequences, approvals, pacing, webhooks, and delivery metrics for AI agents.

A comprehensive engineering stack for designing and implementing robust, production-grade payment gateways for Software-as-a-Service (SaaS) platforms targeting the Pakistani market. It covers integrating major local providers like JazzCash and Easypaisa, handling complex payment flows (PKR billing, webhooks, idempotency), and performing essential financial reconciliation and auditing processes. This guide ensures high correctness and reliability in B2B/SaaS billing operations in Pakistan.

Guides secure Stripe, PayPal, and Square integration: checkout flows, subscription billing, webhook handling with signature verification and idempotency, retry logic, error handling, and PCI compliance best practices.

This skill covers comprehensive PayPal payment integration, including Express Checkout, Instant Payment Notification (IPN) handling, recurring billing setups, and refund workflows. It guides developers on implementing both client-side JavaScript SDKs and server-side REST APIs for secure transaction processing. Learn to manage subscriptions, payouts, and webhook verifications effectively.

Expert patterns for integrating Plaid API, covering Link token flows, transaction synchronization, identity verification, ACH authentication, balance checks, webhook management, and compliance best practices for financial technology applications.