Modern B2B fintech APIs

Power your apps with currency rates, stock data, transaction enrichment and more. One simple API, for all your fintech needs.

  • Fast and reliable data

  • |

  • No credit card required

  • |

  • 1,000 free API calls

  • |

Fast and reliable data

|

No credit card required

|

1,000 free API calls

OVERVIEW

Explore the Synth API

Discover the different endpoints that the Synth API has to offer and how they can be integrated into your projects within seconds.

Logos

Free

Stock Exchanges

Enrichment

Currencies

Tickers

Institutions

Request

VISA/Icon

Apple.com

MasterCard/Logo

Stripe.com

NVDA

Apple Pay/Card

TSLA

Amex/Logo

Response

Visa

JPEG

6.38 KB - 120 x 120

https://logo.synthfinance.com/payments/visa/icon

<img src=”https://logo.synthfinance.com/visa/icon” alt=”Visa”/>

Logos & images are free to use as long as attribution is provided

FEATURES

Finally, a reliable
financial data API

Access real-time financial data seamlessly with Synth's API. Ship your products faster with confidence.

Real-time exchange rates

Access live and historical exchange rates for any currency to keep your data accurate and up-to-date.

USD

$1.00

EUR

€0.95

Track stock performance

Search and retrieve detailed stock ticker information, related tickers, and real-time prices to track market performance.

Global Stock Exchange Data

Quickly access a global list of stock exchanges and retrieve detailed information such as name, location, time zone, and currency in a single API call.

Select exchange

New York Stock Exchange

NYSE

London Stock Exchange

LSE

Retrieve institutional data

Search and retrieve detailed institutional information to support deeper financial analysis and research.

Icon

Name

Charles Schwab Trust Bank

Website

client.schwab.com

List and retrieve currencies

Access a comprehensive list of all fiat currencies, including detailed information about each currency available.

Name

Great British Pound

Symbol

£

Country

ISO Code

GBP

Enhance your transaction data

Add context and metadata to financial transactions, enriching raw data with meaningful insights for better analysis.

AMZN Mktp US*RW1VY1ZU5

$99.24

Amazon

www.amazon.com

440 Terry Avenue North, Seattle, WA

View merchant ID

$99.24

Logos for every payment method, website and ticker

Access free, high-quality logos for financial and payment services, simplifying branding and UX in your platform.

Easy to get started

Clear documentation and structured endpoints for all experience levels.

Private & secure

Robust encryption and security protocols during API interactions.

Dedicated customer support

Access dedicated customer support anytime, anywhere.

We’re our own customers

We don’t just offer Synth — we use it ourselves.

Our own product, Maybe, leverages Synth’s powerful financial data to drive real-time currency conversions, logos, transaction enrichment and stock market data.

Whether it’s enabling FinTech platforms, payment gateways, or personal finance tools, Synth delivers reliable data for every use case.

From stock trading apps to e-commerce platforms, our API enables seamless integration of global financial information.

We trust Synth for our own products, and you can too.

Josh Pigford
Maybe & Synth co-founder

FAQs

Frequently asked questions

Have a question that’s not been answered? Contact us at [email protected]

How do I get started with the Synth API?

Getting started is easy! You’ll need to sign up to create an API key for your account. Once you do, you can visit our API documentation, where you'll find detailed information on endpoints, authentication, request and response formats, and code examples to integrate the API seamlessly.

What financial data does Synth provide?

Synth provides a wide range of financial data to power your applications. This includes real-time and historical exchange rates, stock exchange details, comprehensive currency data, market tickers and prices, and payment logos for financial institutions. With Synth, you can build robust applications that deliver accurate and reliable financial insights to your users.

How does Synth handle security?

Synth takes security very seriously. We use robust encryption protocols to protect your data during every API interaction. Additionally, our secure authentication methods, such as API keys, ensure that only authorized users can access the API. We continuously adhere to industry-standard security practices to safeguard the privacy, integrity, and availability of your data.

What are the pricing plans for the Synth API?

Synth offers flexible pricing plans to suit projects of all sizes. Whether you’re an indie developer working on a small project, a growing business with expanding data needs, or a large-scale enterprise, there’s a plan for you. Our transparent pricing structure ensures you only pay for what you need, with clear options and no hidden fees. Visit our pricing page to find the plan that best fits your requirements.

Can I test the Synth API before committing?

Yes, you can! Synth offers a free tier that allows you to test the API before subscribing to a paid plan. When you sign up, you’ll receive 1,000 free API credits to explore our endpoints and evaluate the API’s capabilities. This gives you the opportunity to experience the functionality, performance, and integration process risk-free before making a commitment.

Do you offer documentation and examples for API integration?

Absolutely! Synth provides detailed and user-friendly documentation to guide you through the integration process. Our resources include endpoint descriptions, authentication methods, request and response formats, and code examples in various programming languages. Whether you’re new to APIs or an experienced developer, our documentation ensures a seamless integration experience. You can access our full documentation by navigating to the Docs link.

Ready to build?

Get started today with 1000 free API calls. Ship apps faster with a modern fintech API and get the data you need.

No credit card required

Modern fintech APIs for businesses seeking an alternative to outdated enterprise software solutions.

All systems operational

© 2025 Maybe Finance, Inc

We’re our own customers