"Understanding OAuth 2.0 Protocol" matching MCP connectors:

ManaBuy MCP Server is a stdio-based Model Context Protocol server for integrating ManaBuy product and order APIs with MCP clients. It exposes tools for product search, product detail retrieval, SKU and order-field inspection, order quotation, authenticated order creation, order status lookup, and order detail retrieval, with explicit confirmation required before any order-creation workflow.

Verified merchants accepting agentic payments on Lightning/L402/BOLT12/USDT — search, verify, pay.

Solana-native MCP gateway for SAP, DeFi tools, SNS identity, and x402 payments.

Hire specialists by the hour — search, schedule, and pay via MCP protocol.

Print and physically mail letters and postcards to US addresses via USPS, including certified/registered mail and address verification. Paid per call in USDC on Base via the x402 protocol, no signup.

Payment rails for AI agents. Pay merchants in USDC on Base. Dual-protocol: x402 + OKX APP.

Agent-commerce MCP server for x402/USDC payments and affiliate splits on Base.

Curated audio-news MCP server. Search trending articles, fetch narrated audio, subscribe topic feeds. OAuth 2.1 + RFC 7591 DCR. Free tier; premium briefings via x402 with stablecoin settlement.

Model Context Protocol server for todo.vu task management and time tracking.

Official Dodo Payments MCP server for live payments, subscriptions, customers, products, refunds, license keys, and usage-based billing (browser OAuth)

Verify x402 endpoints and prepare agent-catalog listings before agents pay.

Norway Peppol/EHF BIS 3.0 e-invoices for AI agents: send, check recipient, get delivery proof.

Netherlands Peppol BIS 3.0 e-invoices for AI agents: send, check recipient, get delivery proof.

Belgium Peppol BIS 3.0 e-invoices for AI agents: send, check recipient, get delivery proof.

Sweden Peppol BIS 3.0 e-invoices for AI agents: send, check recipient, get delivery proof.

Luxembourg Peppol BIS 3.0 e-invoices for AI agents: send, check recipient, get delivery proof.

Finland Peppol/Finvoice e-invoices for AI agents: send, check recipient, get delivery proof.

Mexico CFDI 4.0 invoices for AI agents - issue, query, cancel facturas via Facturapi.

Manage clients, plans, sessions, habits, and billing on Trainzilla via one-click OAuth.

First AI Agent e-commerce marketplace with 74+ AI products, MCP protocol, and Alipay payments