# Kyash

**Canonical:** https://apis.io/providers/kyash/  
**Website:** https://kyash.co/  
**APIs profiled:** 0

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, shared accounts, buy-now-pay-later, personal finance management, and contactless payment through Apple Pay, Google Pay, and Samsung Pay. Kyash is a registered Funds Transfer Service Provider (Kanto Local Finance Bureau No. 00082) and a third-party Prepaid Payment Instrument Issuer (No. 00698), and is ISO/IEC 27001:2022, PCI DSS, and TRUSTe certified. Its business-facing product is Kyash Payout, a mass payout service that sends funds to Japanese domestic bank accounts or Kyash wallets at a flat 50 yen per transfer, integrated either by Zengin/CSV file upload or by direct API integration including a balance API. Kyash previously sold Kyash Direct, an API-based Visa card issuer processing platform launched in 2019. All API access is sales-gated: Kyash publishes no developer portal, API reference, specification, SDK, or sandbox.

## Kin Score — 23.1 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 23.1).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 6.5 |
| Commercial Clarity | 60.5 |

Regulatory layer — **Payments**: 29.7 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (2)

- **Kyash Domain Security** — TLSv1.3 · HSTS · DMARC
- **Kyash Trust Center** — ISO/IEC 27001:2022, PCI DSS, TRUSTe

## Tags

Company, Financial Services, Payments, Fintech, Digital Wallet, Prepaid Cards, Money Transfer, Payouts, Japan, Visa

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/kyash/). Scores are computed from the provider's own public artifacts under a published rubric.