"Headless UI" matching MCP servers:

Pay-per-call USDC payment proxy for AI agents. Issue scoped Pay Tokens with hard spending caps and auto-journal every charge to freee / Money Forward / QuickBooks.

MCP server for creating and fiscalizing invoices via solo.com.hr API. Enables AI agents to generate invoices, retrieve invoice details, list invoices, and check next invoice number.

A Model Context Protocol server that executes headless web scraping and ephemeral secret vaults, settling micro-transactions natively on Base Mainnet via the x402 protocol.

10 MCP servers so agents can work in Korea: Naver Smart Store, Coupang, Cafe24, public data (business status, holidays, addresses), HWP files, KakaoTalk, Popbill e-tax invoices & 알림톡, Toss Payments, Japan→Korea sourcing, tax calendar — with human approval on every write. npm @appmonster/mcp-*.

Enables agents to hold a local Base USDC wallet, receive funds, make bounded x402 payments, prepare seller registration, and recover Voidpay Marketplace results over stdio.

MCP server for Sherweb Partner API - distributor billing, service provider management, customer subscriptions, and payable charges

MCP server for Factura.uz electronic invoicing system (Uzbekistan). Supports creating, signing, accepting, and rejecting e-invoices, plus company and product lookups.

Enables AI agents to issue, void, query, and manage Taiwan e-invoices via 27 MCP tools, wrapping the Universal EC POS Web Service.

Enables retrieval of customer records and triggering refunds via MCP tools, supporting both stdio and streamable HTTP transports.

Enables AI assistants to operate MoneyForward Cloud Invoice, Expense, and Accounting through their public APIs, exposing 56 tools for issuing invoices, filing expenses with receipt images, and posting journal entries.

Enables AI agents to submit leases, mortgages, insurance policies, and HOA documents and retrieve every computed deadline with its exact date, what happens if it is missed, and the clause it came from. Also supports reviewing account credits, listing contracts and upcoming deadlines, unlocking full results, and purchasing credits.

Enables AI agents to manage Chilean electronic invoicing with the SII, collections, bank reconciliation, and accounting through OAuth-secured remote tools. Supports drafting, previewing, and emitting tax documents, plus reports, tax summaries, and SII company data lookups.

Pay for any x402-gated content or API with USDC micropayments on Base. Discover payment gates, execute payments, and view transaction history.

Provides AI assistants with read and safe-write access to Alternative Payments customers, invoices, payment requests, transactions, payouts, and webhooks without directly moving money.

A wallet and guardrail for AI agents, enabling spending limits, payment approvals, and real-time ledger tracking via memory or Stripe backends.

AI-powered shipping integrations with Shippo: shipping labels, rates, address validation, tracking and more for USPS, UPS, FedEx, DHL and other carriers.

Give your AI agent a prepaid card to pay per call for hundreds of paid services — no per-vendor signups or API keys.

Lets AI agents search a marketplace of agent services, read seller storefronts, and prepare a checkout link that a human owner approves and pays in their browser. The agent never holds keys or signs.

Enables AI agents to accept payments in Mexico via Mercado Pago, including OXXO cash vouchers, SPEI bank transfers, cards, and Mercado Pago wallet, through a stateless hosted checkout.

Enables AI agents to issue, query, and cancel Serbia SEF eFaktura electronic invoices (UBL 2.1 SRB-CIUS) into the national Ministry of Finance system, using the merchant's own API key.