# Rain (Raincards)

**Canonical:** https://apis.io/providers/raincards/  
**Website:** https://www.rain.xyz  
**APIs profiled:** 0

Rain is a stablecoin payments infrastructure company that lets platforms, fintechs, and institutions issue cards, open virtual accounts and wallets, and move money globally through a single API. Its issuing platform turns self-custodied stablecoin collateral and digital-dollar balances into Visa/Mastercard-accepted spending at over 175 million merchant locations, connecting blockchain settlement rails to traditional card networks. Products include card issuing, corporate/spend cards, virtual accounts, onramps and offramps, and cross-border payment processing. Rain is a Mastercard Principal Member and is backed by Norwest Venture Partners, Sapphire Ventures, Lightspeed, and Coinbase Ventures. The public developer surface is a gated Mintlify documentation portal at docs.rain.xyz covering the Rain Issuing API; the OpenAPI/Swagger reference is behind login and not publicly retrievable.

## Kin Score — 22.3 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 22.3).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 15.8 |
| Developer Ergonomics | 23.9 |
| Commercial Clarity | 42.1 |

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 (1)

- **Raincards Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Payments, Stablecoins, Card Issuing, Fintech Infrastructure, Global Money Movement, Wallets, Web3 Finance, Cross-Border Payments

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