Payment

Regulatory guidance for U.S. mortgage servicing software. Use when working with loan data models, payment processing, loss mitigation workflows, compliance timelines, or questions about RESPA, TILA, FCRA, GSE requirements, or mortgage servicing regulations.

Comprehensive SaaS planning system for solo developers using Next.js + Supabase + Stripe stack. Converts ideas into shippable subscription products with scope control, feature prioritization, billing architecture, technical roadmap, and anti-feature-creep mechanisms. Generates PRDs with subscription models, pricing strategies, and Claude Code starter prompts. Use when planning SaaS products, subscription apps, or when user mentions billing, payments, recurring revenue, or subscription models.

Comprehensive guide for integrating Stripe with Firebase, Next.js, React, and TypeScript. Use when working with Stripe payments, subscriptions, webhooks, or checkout. Covers webhook setup with Firebase Cloud Functions v2, Next.js App Router webhook handling, signature verification, common errors and solutions, Stripe CLI usage, and MCP integration. Essential for setting up Stripe correctly in Firebase+Next.js+TypeScript projects.

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.

Build n8n automation workflows using MCP tools. Use when creating workflows, configuring nodes, validating configurations, deploying templates, or integrating n8n with Rails apps. Supports Israeli market (Hebrew, WhatsApp Business, NIS payments).

Comprehensive SaaS architecture planner for Next.js + Supabase applications. Converts ideas into production-ready technical plans with database schemas, file structures, feature breakdowns, and week-by-week development roadmaps. Use when planning subscription-based applications, multi-tenant SaaS products, or building from idea to launch.

Flow Nexus credit management and billing operations. Use for checking balances, purchasing credits, configuring auto-refill, and tracking transactions.

Integrates billing and subscriptions with Paddle merchant of record platform. Use when selling SaaS subscriptions with checkout overlays, pricing pages, and subscription management.

Stripe Checkout for recurring subscriptions with Customer Portal. Auto-creates plans if not configured.

Automate Splunk queries and analyze results using Chrome DevTools MCP. Use when the user wants to run Splunk searches, export log data, or analyze Splunk results. Triggers on requests like "check error rates", "search Splunk for X", "run a Splunk query", "analyze logs from Splunk", or "find errors in payment-service".

Use when implementing a standalone Lightning wallet using Cashu mints - provides complete patterns for minting (receiving Lightning payments), melting (sending Lightning payments), mint management, transaction history, and integrating with Lightning addresses and invoices

Implement PCI DSS compliance requirements for secure handling of payment card data and payment systems. Use when securing payment processing, achieving PCI compliance, or implementing payment card security measures.

Build automated billing systems for recurring payments, invoicing, subscription lifecycle, and dunning management. Use when implementing subscription billing, automating invoicing, or managing recurring payment systems.

Comprehensive SaaS architecture planner for Next.js and Supabase applications. Converts ideas into production-ready technical plans with database schemas, file structures, feature breakdowns, and week-by-week development roadmaps. Use when planning subscription-based applications, multi-tenant SaaS products, or building from idea to launch with Next.js and Supabase stack.

Build stablecoin-first dapps on Tempo (TIP-20 payments, memos, fee tokens, sponsorship, batching, TIP-403 compliance, and stablecoin DEX).

Build checkout and payment experiences using Primer's web components. Use this skill when implementing payment flows, checkout pages, card forms, or integrating Primer SDK into React, Next.js, or vanilla JavaScript applications. Covers component usage, React integration patterns, stable object references, event handling, SSR support, and CSS theming.

Execute GraphQL queries against Sonar ISP API.Use when querying customer data, services, billing, invoices, payments, tickets, jobs, or network info from Sonar.Supports live mode via fetch_customer_live(). Reference: src/apis/sonar_client.py

Direct MySQL access to Splynx ISP management database.Use when querying or modifying Splynx tables: customers, leads (category='lead'), services, tariffs, invoices, payments, tickets, network.Faster than REST API for bulk operations. Reference: src/migration/loaders/splynx_mysql/

Stripe payment integration for SaaS. Use when implementing Stripe checkout, webhooks, subscriptions, or payment flows. Includes secure patterns for Next.js.

Webhook validation patterns with signature verification, event logging, and testing tools. Use when implementing webhooks, validating webhook signatures, securing payment webhooks, testing webhook endpoints, preventing replay attacks, or when user mentions webhook security, Stripe webhooks, signature verification, webhook testing, or event validation.