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Fern is a seamless currency conversion and payments API that enables developers to integrate onramps, offramps, FX, crypto exchange, and other useful features into their applications. Fern works with licensed liquidity providers and financial institutions to offer global currency support in one standardized API.

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Fern API core features

  • Multiplex API — Any-to-any currency conversion across all supported crypto and fiat currencies
  • Wallets API — Provision wallets for your users for onramping, offramping, and managing deposits
  • Multi-currency virtual accounts API — Named virtual accounts for business and individual customers, enabling fiat acceptance in 15+ currencies
  • Fern compliance program — Easily onboard businesses and individuals globally with Fern’s KYC/B forms branded with your company name and logo. Fern’s internal compliance team will directly manage and review customer applications.
  • Developer experience — High-touch customer support, scalable API design, and a focus on reliability and responsiveness

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Getting started

The Fern API is currently in private beta. Once you’ve decided to build with Fern, onboarding is straightforward:
1

Create your developer account

Create an account at dashboard.fernhq.com. Tell us a bit about your use case, and select a billing plan.
2

Pre-fund your billing wallet, if needed

If you’re a Builder tier subscriber, pre-fund your billing wallet with USDC to access certain API functionality such as KYC or wallet creation. For subscribers on all other tiers, you can pre-fund billing wallets if desired; otherwise, we invoice you monthly.
3

Set up your API key

You can create API keys for sandbox (coming soon), pre-production, and production environments.
4

Start building

Get started integrating the Fern API!