What is Japan Payments MCP?
A remote Model Context Protocol (MCP) server that lets AI agents create payment links and check payment status for Japanese payment rails — konbini (コンビニ決済), credit cards, PayPay, bank transfer, Pay-easy, LINE Pay, Merpay, au PAY, and Rakuten Pay. It works as a stateless translation layer routing through KOMOJU, a Japanese payment gateway with a hosted checkout page. The server is designed for developers building agentic applications that need to accept payments in Japan.
How to use Japan Payments MCP?
Add the endpoint https://mcp-jp.wishpool.app/mcp in any remote-MCP client (Claude Desktop, Claude Code, Cursor). On each request, send your KOMOJU secret key as the header x-komoju-secret-key. Two tools are available: create_payment_link (creates a JPY hosted-checkout link) and query_payment_status (checks if a session is paid).
Key features of Japan Payments MCP
- Accept payments via konbini (convenience store) and 10+ Japanese methods
- Pull-based payment status check — no webhook required
- Stateless: never holds, moves, or stores funds or credentials
- Bring your own KOMOJU secret key (test or live)
- Zero runtime dependencies; Node ≥ 18 for local development
- Remote MCP endpoint compatible with any MCP client
Use cases of Japan Payments MCP
- AI assistants that need to generate a payment link for a customer to pay at a Japanese convenience store
- Chatbot agents that collect payments via credit card or PayPay in yen
- Automated workflows that verify payment completion without polling a third-party service
- Multi-country payment scenarios using the sister servers for Taiwan, Korea, Indonesia, and India
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