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Expert payment integration specialist mastering payment gateway integration, PCI compliance, and financial transaction processing. Specializes in secure payment flows, multi-currency support, and fraud prevention with focus on reliability, compliance, and seamless user experience.

Expert fintech engineer specializing in financial systems, regulatory compliance, and secure transaction processing. Masters banking integrations, payment systems, and building scalable financial technology that meets stringent regulatory requirements.

Integrates payment processing with Stripe, PayPal, or Square including subscriptions, webhooks, and PCI compliance. Use when implementing checkout flows, recurring billing, or handling refunds and disputes.

Idempotent API operations with idempotency keys, Redis caching, DB constraints. Use for payment systems, webhook retries, safe retries, or encountering duplicate processing, race conditions, key expiry errors.

Laravel Cashier (Stripe) - Subscription billing and payment processing

Use when designing or reviewing systems handling sensitive data (PII, PHI, financial, auth credentials), building features with security implications (auth, payments, file uploads, APIs), preparing for security audits or compliance (PCI, HIPAA, SOC 2), investigating security incidents, integrating third-party services, or when user mentions "threat model", "security architecture", "STRIDE", "trust boundaries", "attack surface", or "security review".

Laravel Cashier (Paddle) - Subscription billing and payment processing

Payment gateway integration. Providers: SePay (Vietnamese: VietQR, bank transfer, cards), Polar (global SaaS: subscriptions, usage-based billing). SDKs: Node.js, PHP, Python, Go, Laravel, Next.js. Capabilities: checkout flows, subscription management, webhooks, QR code generation, benefit automation, tax compliance. Actions: integrate, implement, configure, handle payments/subscriptions/webhooks. Keywords: payment gateway, SePay, Polar, VietQR, bank transfer, subscription, usage-based billing, checkout, webhook, QR code, API key, OAuth2, product management, customer portal, tax compliance, MoR, recurring payment, invoice. Use when: integrating payment processing, implementing checkout, managing subscriptions, handling payment webhooks, generating payment QR codes, building billing systems.

Add Stripe payment processing to Next.js projects. Implement checkout sessions, payment handling, subscriptions, webhooks, and customer management. Use when adding Stripe to a Next.js project, building payment flows, implementing subscriptions, or integrating payment processing.

This skill provides comprehensive guidance for SAP BTP Intelligent Situation Automation setup, configuration, and operations. It should be used when implementing situation-based automation between SAP S/4HANA systems and SAP Business Technology Platform. The skill covers subscription setup, Event Mesh integration, destination configuration, system onboarding, user management with role collections, automatic situation resolution, and troubleshooting. Keywords: SAP BTP, Intelligent Situation Automation, ISA, situation handling, SAP S/4HANA, SAP S/4HANA Cloud, Event Mesh, Business Event Handling, situation automation, situation dashboard, analyze situations, SAP_COM_0345, SAP_COM_0376, SAP_COM_0092, SituationAutomationKeyUser, SituationAutomationAdminUser, Cloud Connector, cf-eu10, CA-SIT-ATM, business situations, situation types, situation actions

This skill provides comprehensive guidance for SAP Business Application Studio (BAS), the cloud-based IDE on SAP BTP built on Code-OSS. Use when setting up BAS subscriptions, creating dev spaces, connecting to external systems, deploying MTA applications, troubleshooting connectivity issues, managing Git repositories, configuring runtime versions, or using the layout editor. Keywords: SAP Business Application Studio, BAS, SAP BTP, dev space, Cloud Foundry, MTA, multitarget application, SAP Fiori, CAP, HANA, destination, WebIDEEnabled, Cloud Connector, Service Center, Storyboard, Layout Editor, ABAP, OData, subscription, entitlements, role collection, Business_Application_Studio_Developer, Git, clone, push, pull, Gerrit, PAT, OAuth, asdf, runtime, Node.js, Java, Python, Task Explorer, CI/CD, Yeoman, generator, template wizard, mbt, mtar, debugging, breakpoint

Expert in consent to sublease agreements where a tenant (sublandlord) rents part or all of their space to a subtenant while remaining on the lease. Use when tenant wants to sublet excess space, landlord is evaluating a sublease consent request, negotiating profit-sharing on subrent, drafting three-party consent agreements, analyzing subtenant vs landlord vs tenant rights, calculating whether sublease is better than surrender, or handling partial subleases with shared space. Key terms include sublease, sublandlord, subtenant, subrent, tenant remains liable, recapture rights, profit sharing, SNDA, non-disturbance, partial sublease, direct payment, attornment

Use when designing SaaS pricing and subscription models. Covers per-seat, tiered, usage-based, and hybrid pricing patterns with Stripe integration, plan transitions, and revenue optimization.

Payment processing and subscription management integration patterns. Covers Stripe, payment lifecycle, webhooks, dunning, and billing system architecture.

エクスプレスチェックアウト、サブスクリプション、返金管理をサポートするPayPal決済処理を統合します。PayPal決済の実装、オンライン取引の処理、Eコマースチェックアウトフローの構築時に使用します。

Usage tracking, metering infrastructure, aggregation patterns, and consumption-based billing support for SaaS applications

Debug voicelite-web backend including Supabase PostgreSQL, Prisma ORM, license validation API, and Stripe webhooks. Activates when working in voicelite-web directory or debugging API/database issues.

堅牢でPCI準拠の決済フロー（チェックアウト、サブスクリプション、Webhook）を含むStripe決済処理を実装します。Stripe決済の統合、サブスクリプションシステムの構築、安全なチェックアウトフローの実装時に使用します。

PCI DSS compliance planning for payment card handling including scope reduction, SAQ selection, and security controls

HealthSim generates realistic synthetic healthcare data for testing EMR systems, claims processing, pharmacy benefits, and analytics. Use for ANY request involving: (1) synthetic patients, clinical data, or medical records, (2) healthcare claims, billing, or adjudication, (3) pharmacy prescriptions, formularies, or drug utilization, (4) HL7v2, FHIR, X12, or NCPDP formatted output, (5) healthcare testing scenarios or sample data generation.