# Services from open-pay.jp on Zero

> open-pay.jp serves 10 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/open-pay.jp
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/open-pay.jp/health.json

## Services

- [JPYC Network Activity](https://www.zero.xyz/c/jpyc-network-activity-e2491e6b/llms.txt): $0.01/call via x402. Returns hourly-computed JPYC transfer metrics on Polygon for the last ~24 hours, including event count, unique senders/receivers, volume, median transfer, and top receivers.
- [JPYC Service Monitor](https://www.zero.xyz/c/jpyc-service-monitor-455b60d2/llms.txt): $0.01/call via x402. Returns a weekly change feed of Japan-related JPYC and Web3 services, filtered by a since-date or as a full snapshot, with each event typed as added/updated/removed/verified.
- [JPYC Live Total Supply by Chain](https://www.zero.xyz/c/jpyc-live-total-supply-by-chain-28b8d02e/llms.txt): $0.002/call via x402. Returns the live total supply of JPYC (Japan's yen-pegged stablecoin) for one or all supported chains (Polygon, Kaia, Avalanche, Ethereum), read directly from the token contracts at request time.
- [JPYC Multi-Chain Balance Lookup](https://www.zero.xyz/c/jpyc-multi-chain-balance-lookup-ab1cc226/llms.txt): $0.002/call via x402. Returns the live JPYC stablecoin balance of any Ethereum-compatible address across Polygon, Kaia, Avalanche, and Ethereum in a single call
- [JPYC Transfer Events by Chain](https://www.zero.xyz/c/jpyc-transfer-events-by-chain-28f9f3e9/llms.txt): $0.005/call via x402. Returns the most recent JPYC stablecoin transfer events on a specified blockchain (roughly the last hour of blocks), newest first, optionally filtered to a single address as sender or recipient.
- [Japan Stablecoin Payment Monitor](https://www.zero.xyz/c/japan-stablecoin-payment-monitor-dd93ea71/llms.txt): $0.01/call via x402. Returns a dated change feed of stablecoin payment service events in Japan, including new launches, pilots, partnerships, fee changes, supported assets/chains, and closures, filterable by date.
- [OpenPay USDC Store Listing API](https://www.zero.xyz/c/openpay-usdc-store-listing-api-82795079/llms.txt): $0.04/call via x402. Retrieves a list of stores registered on the OpenPay payment infrastructure that accept USDC and JPYC stablecoin payments in Japan
- [OpenPay Japan Web3 Directory Search](https://www.zero.xyz/c/openpay-japan-web3-directory-search-1f09e5ad/llms.txt): $0.02/call via x402. Search the Japan Web3 directory for USDC/JPYC-compatible merchants and payment services via OpenPay's non-custodial payment infrastructure
- [OpenPay Japan Web3 Directory - USDC Payment Endpoint](https://www.zero.xyz/c/openpay-japan-web3-directory-usdc-payment-endpoint-56d93b76/llms.txt): $0.02/call via x402. Returns OpenPay merchant/directory information for Japan Web3 listings, accessible via micropayment of $0.02 USDC using the x402 payment protocol
- [OpenPay Hello Demo Endpoint](https://www.zero.xyz/c/openpay-hello-demo-endpoint-d75d7abc/llms.txt): $0.001/call via x402. Returns a hello message with the current timestamp, serving as a demonstration of x402 micropayment-gated API access.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)