🇯🇵Blockchain, Crypto & Web3 in Japan
6 blockchain, crypto & web3 providers in Japan, publishing 11 APIs.
Blockchain, Crypto & Web3 in Japan — 6 providers on the APIs.io network sit in both cohorts, and between them they publish 11 indexed APIs.
4 of the 6 publish at least one machine-readable API; 2 publish nothing indexed at all. That split is the first thing worth reading here — a vertical can be well represented in a market and still have almost no programmable surface.
By Kin Score band: 2 developing, 1 exemplar, 1 thin, 1 emerging, and 1 minimal.
Leading by rating: PAY.JP, JPX (Japan Exchange Group), Paidy, PayPay, Kyash, and enechain.
Country membership is exact-tag only. A provider lands in Japan when one of its own top-level tags names the country — there is no headquarters signal on the country axis, unlike the region axis which reads tag, provider-name pattern, and stated HQ. So this cell is a floor, not a census, and it understates by construction — a blockchain, crypto & web3 company headquartered in Japan that never tags itself is counted nowhere on this axis. The region cuts read the wider signal set and will generally hold more.
Providers (6)
| Provider | Description | APIs | Rating |
|---|---|---|---|
| PAY.JP | PAY.JP is an online payment service operated by PAY, Inc. (PAY株式会社) in Japan. Its Stripe-style REST API lets merchants create charges, tokenize cards, manage customers, run subs... | 1 | exemplar |
| JPX (Japan Exchange Group) | JPX (Japan Exchange Group) operates the Tokyo Stock Exchange, Osaka Exchange, and Tokyo Commodity Exchange, and sells Japanese market data through its JPX Market Innovation & Re... | 8 | developing |
| Paidy | Paidy is a Japanese buy now, pay later (BNPL) and digital payment service that enables Japanese consumers to make purchases and pay later via monthly consolidated billing. Merch... | 1 | developing |
| PayPay | PayPay is Japan's largest QR/barcode mobile-payment network (a SoftBank / Yahoo Japan / Paytm joint venture) with tens of millions of users. Its Open Payment API (OPA v2) lets p... | 1 | thin |
| Kyash | Kyash Inc. (株式会社Kyash) is a Tokyo-based fintech founded in 2015 that operates a consumer mobile wallet and Visa prepaid card in Japan, covering charging, peer-to-peer transfers,... | 0 | emerging |
| enechain | enechain operates the largest energy exchange in Japan, offering trading opportunities for wholesale electricity and environmental values across an over-the-counter marketplace ... | 0 | minimal |
Indexed API documents (27)
Two numbers, both real: these providers publish 11 APIs as their own documents, which the catalog indexes split one-per-resource into 27 documents.
PAY.JP 3D Secure API
PAY.JP Account API
PAY.JP Balances API
PAY.JP Cards API
PAY.JP Charges API
PAY.JP Customers API
PAY.JP Events API
PAY.JP Plans API
PAY.JP Platform API
PAY.JP Statements API
PAY.JP Subscriptions API
PAY.JP Terms API
PAY.JP Tokens API
PAY.JP Transfers API
J-Quants Equities API
J-Quants Markets API
J-Quants Indices API
J-Quants Financials API
J-Quants Derivatives API
J-Quants EDINET Data API
J-Quants TDnet Disclosure API
J-Quants Bulk Download API
Paidy Checkout
Paidy Payments API
Paidy Tokens API
PayPay Payment API
PayPay Payments API
Other industries in Japan
Blockchain, Crypto & Web3 elsewhere
This page is the intersection of two independently computed cohorts:
Japan and
Blockchain, Crypto & Web3. A provider appears here only when it is
already a member of both. Japan membership is matched on tag,
so this is a floor rather than a census — coverage gaps show up here as small numbers, not as absent pages.
Work with this as data
Every country here is available over the APIs.io API and to AI agents over MCP. Countries is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.