Explore skills

Implement MPP client-side payment handling with mppx.fetch(). Use when building AI agents or automated clients that consume 402-protected APIs, handling the transparent challenge-response payment flow.

Validate MPP implementations against the specification — verify HTTP 402 challenge-response compliance, header formats, payment method correctness, service discovery, and production readiness. Use when auditing an MPP integration or preparing for production launch.

Implement MPP service discovery — OpenAPI documents with x-payment-info extensions, x-service-info metadata, and llms.txt for autonomous agent discovery. Use when publishing paid API metadata for AI agents to find and pay for your services.

Scaffold an MPP project — install mppx SDK, configure payment methods, set up server middleware, and create a basic paid API endpoint. Use when starting a new MPP machine payments project from scratch.

Implement Shared Payment Token (SPT) lifecycle management for MPP — creation, usage, deactivation, webhook events, and reconciliation. Use when building the fiat/card payment flow within MPP using Stripe SPTs.

Implement UCP Embedded Checkout Protocol — iframe/webview-based checkout UI for human escalation using JSON-RPC 2.0 over postMessage. Use when the checkout status is requires_escalation and the buyer needs a merchant-hosted UI.

Implement the WebMCP Imperative API — register tools via navigator.modelContext.registerTool() with proper schemas, execute callbacks, and lifecycle management. Use when building dynamic tool registration in JavaScript.

Implement WebMCP security best practices — permission model, data minimization, honest descriptions, input validation, fingerprinting prevention, and fraud mitigation. Use when auditing or hardening WebMCP tool implementations.

Deploy WooCommerce — WP-CLI automation, database migrations, zero-downtime updates, staging workflows, environment configuration, and CI/CD patterns. Use when deploying WooCommerce stores or setting up deployment pipelines.

Implement MPP payment proxies — wrap existing APIs with HTTP 402 payment gates without modifying the upstream service. Use when monetizing third-party APIs, adding payment layers to existing services, or building API marketplaces.

Implement UCP Order capability and webhook delivery — post-purchase order management with fulfillment tracking, adjustments (refunds/returns), and cryptographically signed webhook notifications. Use when building order management or webhook infrastructure.

Write modern PHP 8.x code — typed properties, enums, readonly classes, match expressions, named arguments, union/intersection types, fibers, attributes, and constructor promotion. Use when writing PHP for WooCommerce or any PHP 8.x project.