Finance & Commerce Agent Skills for ChatGPT

Implement MPP payment proxies — wrap existing APIs with HTTP 402 payment gates without modifying the upstream service.

Scaffold an MPP project — install mppx SDK, configure payment methods, set up server middleware, and create a basic paid API endpoint.

Implement MPP server-side middleware for Hono, Express, Next.js, and Elysia.

Implement MPP service discovery — OpenAPI documents with x-payment-info extensions, x-service-info metadata, and llms.txt for autonomous…

Implement MPP session-based streaming payment flows — authorize-once pay-as-you-go patterns for continuous data feeds, per-token billing…

Configure Stripe as an MPP payment method — card and wallet payments via Shared Payment Tokens (SPTs), integrating MPP's HTTP 402 flow…

Manage e-commerce operations across multiple marketplaces and channels.

Automate MX Technologies tasks via Rube MCP (Composio).

NACUBO endowment data (~650 institutions, 2012-2022).

Use the NanoBazaar Relay to create offers (sell services), create jobs (buy services), attach charges, search offers, and exchange…

Nova API de Listagem de Carrinho da Tray.

Automates the implementation of NewebPay refund functionality for credit cards and e-wallets in web applications.

Build Next.js 15 storefronts for Medusa v2 — App Router conventions, server vs client components, Medusa JS SDK integration, data…

Build with Next.js for BigCommerce — App Router, Server/Client Components, data fetching, ISR, middleware, API routes, and Catalyst…

Full AtomicAssets/AtomicMarket NFT lifecycle on XPR Network

This skill should be used when building NFT marketplace integrations, implementing collection browsing, or adding floor price tracking.

Implement NFT standards (ERC-721, ERC-1155) with proper metadata handling, minting strategies, and marketplace integration.

Master ERC-721 and ERC-1155 NFT standards, metadata best practices, and advanced NFT features.

Expert patterns for Algolia search implementation, indexing strategies, React InstantSearch, and relevance tuning Use when: adding search…

Integrate PayPal payment processing with support for express checkout, subscriptions, and refund management.

Use when building Shopify themes, apps, custom storefronts, or e-commerce solutions.