Hydrogen APIs

For more customized solutions, develop using our powerful set of REST APIs.

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Hydrogen Atom

Hydrogen Atom has powerful REST APIs with modules built for fintech.

View Atom Docs

Nucleus API

The Nucleus API provides core digital infrastructure and a standardized data model to anchor your fintech applications.


Set single and multi-factor auth and client permissions.

Onboarding and KYC

Encrypted client onboarding, plus KYC/AML integrations.


Create and manage client accounts & held away accounts.

Portfolio Management

Manage securities, investment models, portfolios and goals.


Run robust risk and performance reporting on any entity.


Create and track single and bulk orders for trade execution.


Configure decision trees and client questionnaires.

Business   Coming Soon

Business data on customers, invoices, accounting, expenses.

Proton API

The Proton API provides financial engineering and business logic on top of the data to power your fintech application.

Risk Scoring

Create single or multi-dimension risk scores for clients.

Goals Tracking

Track the status of goals and provide recommendations.


Rebalance portfolios with customizable rules.


Construct portfolios and perform complex simulations dynamically.

Insurance Analytics

Identify annuity payments and life insurance needs.

Financial Calculators

Calculators for retirement, financial planning, mortgage.

Financial Health

Score the health of client portfolios and finances.

Personal Finance

Track budgets, analyze cash flows, and calculate net worth.

Electron API

The Electron API provides admin functionality to manage and grow your fintech application.


Interface with support tickets, FAQs, and chat.


Manage and track campaigns, promotions, and usage.


Store and encrypt sensitive client or firm documents.

Hydrogen Molecule

Hydrogen Molecule has powerful REST APIs to add DeFi blockchain components to any Atom application.

View Molecule Docs

Blockchain Identity

Manage an identity for any client on the Ethereum blockchain.

Security Tokens

Create, restrict, transfer, and invest in security tokens.

Data Tracking

Push, pull, and track any on-chain data within an application.

Crypto Payments

Send and receive crypto payments for instant settlement.

Document Hashing   Coming Soon

Store, hash, encrypt, track, documents on-chain.

Escrow   Coming Soon

Store payment on-chain until receipt of goods is verified.

Innovation. Scalability. Modularity. Speed.

Cut years and tens of millions of development cost off your build by leveraging our APIs.

The team and tech behind Hydrogen built and ran the most innovative consumer fintech in the US.

Building your solution on our REST API architecture will allow you to scale and extend your capabilities.

Our APIs are built in a modular fashion, allowing you to mix and match elements and move pieces around.

Hydrogen is meant to be light, giving you the tools to get your product to market at faster speeds.

Hydrogen APIs integrate with the tools you need

Easily integrate with preferred 3rd party tools with the click of a button. Hydrogen has pre-built connections into leading vendors for KYC, aggregation, brokerage, cards, BaaS, CRM, ACH, market data and more.

View Integrations
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