Payment

Integrate external REST and GraphQL APIs with proper authentication (Bearer, Basic, OAuth), error handling, retry logic, and JSON schema validation. Use when making API calls, database queries, or integrating external services like Stripe, Twilio, AWS. Achieves 10-30x cost savings through direct execution vs LLM-based calls. Triggers on "API call", "REST API", "GraphQL", "external service", "API integration", "HTTP request".

Use when designing animations for banking apps, payment systems, investment platforms, or financial dashboards

Integrate PayPal payment processing with support for express checkout, subscriptions, and refund management. Use when implementing PayPal payments, processing online transactions, or building e-commerce checkout flows.

Regulatory guidance for Canadian mortgage servicing software. Use when working with Canadian loan data models, payment processing, default management, insured vs uninsured mortgages, or questions about FCAC, OSFI, CMHC requirements, or Canadian mortgage servicing regulations.

Transform a Vibes app into a multi-tenant SaaS with subdomain-based tenancy. Adds Clerk authentication, subscription gating, and generates a unified app with landing page, tenant routing, and admin dashboard.

Integrates PayPal payments with the JavaScript SDK for checkout buttons and card fields. Use when accepting PayPal, Venmo, Pay Later, and credit card payments in web applications.

Expert in Shelby Protocol TypeScript SDK for decentralized storage on Aptos. Helps with blob uploads/downloads, session management, micropayment channels, multipart uploads, and SDK integration for Node.js and browser environments. Triggers on keywords ShelbyNodeClient, ShelbyClient, @shelby-protocol/sdk, Shelby SDK, decentralized blob storage, Shelby upload, Shelby download, Shelby session.

Stripe Checkout integration for programme purchases with Server Actions, webhook signature verification, and success/cancel flows. Use when implementing payments, creating checkout sessions, handling webhooks, or setting up purchase flows.

Implements Stripe payments correctly the first time. Handles checkout sessions, webhooks, subscriptions, and customer management following Stripe best practices.

Enterprise-grade FastAPI development covering complete full-stack architecture with Next.js/React frontend, Neon Serverless PostgreSQL, SQLModel ORM, security hardening, payment integrations (Stripe, JazzCash, EasyPaisa), async patterns, real-time features, microservices, and production deployment. Use when building APIs, integrating with databases, implementing authentication/authorization, payment systems, real-time functionality, or deploying to production.

Integrates Stripe payments including checkout, subscriptions, webhooks, and customer management. Use when accepting payments, setting up subscriptions, handling webhooks, or managing billing.

Zoho Books and Zoho Inventory API integration for TSH Clients Console. Use when:(1) Creating new API routes that call Zoho endpoints(2) Debugging API errors, token issues, or rate limits(3) Adding new Zoho data fetching functions(4) Understanding OAuth token caching with Upstash Redis(5) Working with products, orders, invoices, payments, or credit notes(6) Troubleshooting "Contact for price" or stock display issues

Эксперт AP workflow. Используй для процессов кредиторской задолженности, invoice processing, three-way matching и payment automation.

Stripe Checkout for one-time payments with Express.js. Auto-creates products if not configured.

Write external integrations following the Epic architecture patterns. Use when creating services for third-party APIs, email, payments, or complex business logic. Triggers on "create an integration", "add a service", or "integrate with".

Implement Stripe payment processing for robust, PCI-compliant payment flows including checkout, subscriptions, and webhooks. Use when integrating Stripe payments, building subscription systems, or implementing secure checkout flows.