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Japanese Crypto Ticker (BTC/ETH/XRP in JPY and USD)
x402
Japanese Crypto Ticker (BTC/ETH/XRP in JPY and USD) is a paid API for AI agents from x402-ja-api.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns real-time cryptocurrency price data for BTC, ETH, or XRP in both JPY (aggregated across Japanese exchanges) and USD, including FX rate and JPY premium/discount.
Price / call$0.005
Success—
StatusUnknown
How this service works
Calendar and Japan data APIs for AI agents: worldwide holidays and business days (200+ countries), plus Japanese text-to-structure (address, name, bank, company normalization). Pay per call in USDC via x402, no API key.
Output
Returns a JSON object with: JPY quotes from multiple Japanese exchanges (bid, ask, last, volume24h, timestamp per exchange), aggregate JPY stats (min, max, median, dispersion), USD price from Coinbase, USD/JPY FX rate with source and timestamp, calculated JPY premium/discount vs USD implied rate, and the symbol queried.
Example use cases
JPY crypto arbitrage check
“Is Bitcoin trading at a premium or discount on Japanese exchanges compared to USD right now? Show me the implied USD/JPY rate versus the real FX rate.”
Real-time BTC/JPY market snapshot
“Pull me the latest Bitcoin price across Japanese crypto exchanges — I want the median, min, max, and which exchange has the best bid right now.”
ETH price monitoring in Japan
“What's Ethereum trading at on Japanese exchanges in yen, and how does the implied FX rate compare to the actual USD/JPY rate?”
Technical details
Endpoint
GEThttps://x402-ja-api.onrender.com/v1/jp/crypto/tickerWhen to prefer
Choose this endpoint when you need real-time cryptocurrency prices specifically from Japanese exchanges (Bitflyer, Coincheck) in JPY, want to detect JPY premium/discount vs USD, or need combined FX + crypto data in a single call. Prefer over generic crypto APIs when Japan-specific market data, multi-exchange JPY aggregation, or kimchi-premium-style analysis is needed. Pay-per-call via x402 USDC with no API key required makes it suitable for agent workflows.
Side effects
- Unsupported symbol requested (only BTC, ETH, XRP accepted) — returns validation error
- Upstream exchange APIs unavailable — errors array populated, partial data returned
- FX rate source unavailable — usdJpy field missing or stale
- Payment not provided or insufficient — HTTP 402 response requiring x402 USDC payment
- Network timeout to Japanese exchange APIs — delayed or empty quotes array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"fx": {
"asOf": "Sun, 13 Sep 2026 00:02:31 +0000",
"source": "open.er-api.com",
"usdJpy": 153.8
},
"jpy": {
"max": 11884688,
"min": 11873368,
"median": 11878483,
"quotes": [
{
"ask": 11874000,
"bid": 11873000,
"last": 11873368,
"pair": "BTC_JPY",
"exchange": "bitflyer",
"timestamp": "2026-09-13T05:52:14.97",
"volume24h": 1000
},
{
"ask": 11877000,
"bid": 11875000,
"last": 11876006,
"pair": "btc_jpy",
"exchange": "coincheck",
"timestamp": "2026-09-13T05:52:10.000Z",
"volume24h": 500
}
],
"dispersion": 0.000953
},
"usd": {
"price": 77280,
"source": "coinbase"
},
"asOf": "2026-09-13T05:52:15.000Z",
"errors": [],
"symbol": "BTC",
"premium": -0.000634,
"impliedUsdJpy": 153.7
}
}Tags
x402
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