# Coinflow

**Canonical:** https://apis.io/providers/coinflow/  
**Website:** https://coinflow.cash/  
**APIs profiled:** 1

Coinflow is a stablecoin-native payments platform (backed by Pantera Capital) that lets software companies and marketplaces accept card, ACH, and crypto/USDC payments and send instant payouts across Solana, EVM, and Stellar rails. Its API covers checkout / pay-ins, PCI-compliant tokenized card-on-file, subscriptions, marketplace sub-merchant onboarding with KYC/KYB, refunds, withdrawals and merchant payouts, and HMAC-signed webhooks. Coinflow ships pre-built UI SDKs for React, React Native, Swift, Android, and Flutter, plus a sandbox environment with published test cards and 3DS triggers.

## Kin Score — 55.7 / 100 (strong)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.5 from 56.2).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 59.6 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 73.2 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Payments**: 84.4 (matched via tags).

## Agent readiness — 36.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | documented |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | documented |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (14)

- **Coinflow authentication API** — The authentication API from Coinflow — 3 operation(s) for authentication.
- **Coinflow cardTokenization API** — The cardTokenization API from Coinflow — 3 operation(s) for cardtokenization.
- **Coinflow checkout API** — The checkout API from Coinflow — 33 operation(s) for checkout.
- **Coinflow customers API** — The customers API from Coinflow — 15 operation(s) for customers.
- **Coinflow events API** — The events API from Coinflow — 1 operation(s) for events.
- **Coinflow marketplace API** — The marketplace API from Coinflow — 11 operation(s) for marketplace.
- **Coinflow merchant API** — The merchant API from Coinflow — 49 operation(s) for merchant.
- **Coinflow merchantSubscription API** — The merchantSubscription API from Coinflow — 4 operation(s) for merchantsubscription.
- **Coinflow redeem API** — The redeem API from Coinflow — 4 operation(s) for redeem.
- **Coinflow refund API** — The refund API from Coinflow — 4 operation(s) for refund.
- **Coinflow subMerchant API** — The subMerchant API from Coinflow — 3 operation(s) for submerchant.
- **Coinflow subscription API** — The subscription API from Coinflow — 7 operation(s) for subscription.
- **Coinflow utilities API** — The utilities API from Coinflow — 3 operation(s) for utilities.
- **Coinflow withdraw API** — The withdraw API from Coinflow — 30 operation(s) for withdraw.

## MCP servers (1)

- **Coinflow MCP Server** — Coinflow publishes a hosted, remote MCP server for its documentation (a Fern "fern-docs-mcp-server"), advertised in the docs llms.txt for AI-client integration (Claude Code, Cur...

## Agentic access (1)

- **Coinflow Agentic Access** — 180 operations · 129 acting · 3 human-in-the-loop

## Security (3)

- **Coinflow Authentication** — apiKey · 7 schemes
- **Coinflow Domain Security** — TLSv1.3 · HSTS · DMARC
- **Coinflow Vulnerability Disclosure** — security.txt · contact published

## Tags

Company, Crypto, Payments, Stablecoin, USDC, Checkout, Payouts, Marketplace, Web3, Fintech

---

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