# Kyash

> Kyash Inc. (株式会社Kyash) is a Tokyo-based fintech that operates a consumer mobile wallet and Visa prepaid card in Japan, and sells a B2B payout service to businesses. Kyash is a registered Funds Transfer Service Provider (Kanto Local Finance Bureau No. 00082) and third-party Prepaid Payment Instrument Issuer (No. 00698). Its API surface is sales-gated: there is no public developer portal, no published OpenAPI, and no public API reference.

## Company

- [Kyash](https://kyash.co/): Consumer wallet, Visa prepaid card, money transfer, and personal finance management app for the Japanese market.
- [Company profile](https://kyash.co/company): Founded 2015-01-23. HQ Aoyama, Minato-ku, Tokyo. CEO Shinichi Takatori. ISO/IEC 27001:2022 certified, PCI DSS certified, TRUSTe certified.
- [Press releases](https://kyash.co/news/press-release): Japanese announcements.
- [Press releases (English)](https://kyash.co/news/press-release-en): English announcements, 2018-2024.
- [Careers](https://kyash.co/recruit)

## APIs

- [Kyash Payout (Kyash 送金サービス)](https://kyash.co/biz/payout): B2B mass-payout service. Sends funds to Japanese domestic bank accounts or to Kyash app wallets at a flat ¥50 per transfer, 24/7. Two integration modes: bulk file upload (Zengin full-bank format or CSV, ~2 weeks to launch) and direct API integration (~1 month to launch), including a balance-checking API. Access is granted through a sales inquiry; no public documentation, base URL, authentication reference, or specification is published.
- [Payout inquiry](https://kyash.co/biz/payout/inquiry): Request access to the Payout service and its API.
- [Payout terms of service](https://kyash.co/legal/terms/payout)

Historical: "Kyash Direct", announced 2019-04-25 and launched 2019-10-04, was Kyash's API-based Visa card issuer processing platform sold to other businesses. It no longer has a public product page or developer documentation on kyash.co.

## Specs

No OpenAPI, AsyncAPI, GraphQL schema, JSON Schema, or Protobuf definition is published by Kyash. No Postman collection, SDK, or CLI is published. The Kyash GitHub organization publishes general-purpose open-source utilities (a Zengin bank-format Go library, async-retry, ghlint, several Android/iOS UI libraries) but no API client libraries.

- [Kyash on GitHub](https://github.com/Kyash)

## Security and compliance

- [Information security policy](https://kyash.co/legal/policy/security): ISMS, PCI DSS, and TRUSTe certifications displayed. No vulnerability disclosure program, security contact, or bug bounty published; no /.well-known/security.txt.
- [Privacy policy](https://kyash.co/legal/policy/privacy)
- [User protection policy](https://kyash.co/legal/policy/userprotection)

## Operations and support

- [Maintenance notices](https://kyash.co/news/maintenance): Scheduled and emergency maintenance, the de-facto status page.
- [Service information](https://kyash.co/news/information)
- [Help center](https://help.kyash.co/)
- [Product blog](https://blog.kyash.co/): Engineering and product blog on Hatena Blog. Atom feed at https://blog.kyash.co/feed
- [Contact](https://kyash.co/contact)

## Legal

- [Terms of service](https://kyash.co/legal/terms)
- [Terms of service (English)](https://kyash.co/legal/terms-en)
- [Payment Services Act disclosures](https://kyash.co/legal/description-subject-to-psa)

## API Evangelist artifacts

- [apis.yml](https://raw.githubusercontent.com/api-evangelist/kyash/refs/heads/main/apis.yml)
- [Domain security probe](https://raw.githubusercontent.com/api-evangelist/kyash/refs/heads/main/security/kyash-domain-security.yml)
- [Trust and compliance posture](https://raw.githubusercontent.com/api-evangelist/kyash/refs/heads/main/security/kyash-trust-center.yml)
- [Lifecycle and status channels](https://raw.githubusercontent.com/api-evangelist/kyash/refs/heads/main/lifecycle/kyash-lifecycle.yml)
- [Well-known probe](https://raw.githubusercontent.com/api-evangelist/kyash/refs/heads/main/well-known/kyash-well-known.yml)

Generated by the API Evangelist enrichment pipeline on 2026-07-19 from Kyash's public web properties. No API specification exists to ground SDK, scope, error, convention, sandbox, or agent-skill artifacts.