Coinflow
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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Coinflow the way a machine reads it — 20 machine-readable artifacts across 14 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Coinflow scores 57.3/100 (developing), with a separate agent-readiness read of 87/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Coinflow
Each block below is one kind of artifact we hold for Coinflow. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 14
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
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.
Scroll within the panel for all 14 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
coinflow-mcp.yml
MCP SERVEREvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Coinflow Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Coinflow — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 8 ·
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/coinflow · machine-readable index on apis.io