5 leading crypto API providers for businesses in 2025

Crypto businesses are losing users to complex payment flows, but exchange APIs like ChangeNOW’s are helping turn that around.

Businesses today, especially those in the crypto space, face several challenges when it comes to keeping clients on their site. 

Let’s suppose a customer doesn’t own commonly-held coins like BTC or ETH and the site only supports those, this ends up being an immediate loss of business. Here’s another scenario: Let’s imagine a client is just about to complete a crypto transaction on a new site. This user would need to open a wallet, visit a third-party exchange, swap tokens, copy the address, and then return to pay. This is what is called a high-friction process because it gives users multiple chances to drop off midway in this complicated process.

Practically, it’s unrealistic to expect every crypto business to build their own exchange. This requires licenses, liquidity partners, and serious security infrastructure. 

This is where an exchange API comes into the picture. An API or application programming interface is a tool that allows software systems to communicate with each other. A crypto exchange API lets developers and businesses integrate exchange functionality directly into their apps, platforms, or websites, without having to create their own exchange from scratch.

Using APIs, a developer can say, for example, obtain live price data for any coin and execute a buy order. They can also help businesses accept crypto payments, which makes them especially useful for e-commerce platforms. Another use case is automating portfolio management.

Let’s look at five leading crypto API providers in 2025, what they offer businesses, and how they differ from one another.

Comparative table 

1. ChangeNOW API

Top of our list is the ChangeNOW API. ChangeNOW is an up-and-coming non-custodial cryptocurrency exchange with over 5 million users worldwide. ChangeNOW for Business is the organization’s transformational suite of financial solutions that provides SMEs and enterprises with stable and secure cryptocurrency payments, exchanges and asset custody.

ChangeNOW supports more than 1100+ coins available for exchange on more than 100+ supported networks, with assets sourced from CEXs and DEXs for maximum liquidity.

This inventive new platform boasts of seamless integration and a wide range of supported crypto and fiat assets, alongside SOC-2 and ISO 27001 best practices. ChangeNOW has facilitated dozens of millions of successful transactions every month for its partners operating within the FinTech, iGaming, lending and investment sectors.

Among all of the ChangeNOW for Business solutions, its Crypto Exchange API stands out as a must-have for crypto businesses. Its most popular use cases are in crypto exchanges, crypto wallets, payment gateways and fiat on/off-ramps.

Features

• Coins offered: There are more than 1100 coins available for exchange on over 100 supported networks, with assets sourced from CEXs and DEXs. 
• Cross-chain: All assets can be exchanged across different blockchains, enabling users to perform swaps between assets on separate networks without the need for intermediaries.
• Integration options: Businesses can easily integrate fixed-rate or standard exchange flows with ChangeNOW’s comprehensive API documentation. 
• Fiat support and onboarding: Fiat on- and off-ramp is available upon request. Businesses can enable customers to directly onboard into fiat-to-crypto exchanges from their platform.
• Exchange flow options: Companies get the best possible market rates with both standard and fixed-rate options. It’s a simple way for companies to expand their client base and offer flexibility in exchanges.
• Adaptable API: Developers can build an exchange service from scratch or integrate the ChangeNOW API into an existing platform. The system works seamlessly with both web platforms and mobile apps.
• Performance metrics: ChangeNOW’s performance metrics are through the roof with 99.99% availability rate, 10 min accident warning time and 350 ms response time.

Additional tools

ChangeNOW also brings a range of additional tools to the table. It has an exchange widget that can be embedded directly into the website or mobile app with minimal coding. It also includes WordPress plugin support.

Profit options for partners

Every partner that integrates ChangeNOW’s solution gains access to exclusive features and discounts based on monthly volume. The platform offers fully customizable profit options, and businesses can earn from 0.4% per transaction with flexible commissions by assets, pairs, or exchange amounts.

Integration and support

ChangeNOW offers comprehensive support for any request, including wrong network deposits, duplicated transactions, and more. A personal manager and support team are available 24/7 to assist users. After integration, ChangeNOW handles all maintenance, ensuring a hassle-free experience

Overall, ChangeNOW is an ideal option for Fintechs, iGaming, as well as lending and investment platforms. It also benefits product managers, developers, and C-level executives looking for solutions to their organization’s fintech challenges. ChangeNOW is perfect for enterprises ready to integrate new solutions into existing services or develop additional products.

2. Coinbase Cloud

Coinbase needs no introduction. Launched in 2012, Coinbase is one of the leading crypto exchanges in the space. Coinbase Cloud provides APIs and infrastructure to help developers with powerful and effective blockchain-enabled products. Coinbase Cloud’s appeal lies in the fact that it is backed by one of the most regulated and widely trusted exchanges in the crypto world. From public review, it seems to be an ideal partner for enterprises requiring high security, compliance, and scalability.

Features

• Real-time data: This particular feature makes it easy for developers to access current price feeds and historical charts for a wide range of cryptocurrencies.
• Wallet control: Coinbase Cloud supports wallet and account management, which means developers can create and manage crypto wallets directly through the API.
• Developer-friendly: Coinbase Cloud’s operations make it easy for developers to build apps, trading platforms, and financial products. 
• Security: One of Coinbase’s standout features is its strong and commendable security.

Overall, Coinbase Cloud is a leading product with several use cases. It’s an ideal fit for  financial institutions needing white-label custody, apps requiring deep integrations into blockchain data, and platforms offering institutional staking services.

However, while Coinbase Cloud does have a multitude of features, its complexity and regulatory strictness might not make it the perfect fit for early-stage startups.

3. Binance API

Binance is a household name at this point, and despite roadblocks like its CEO having to spend a few months behind bars, Binance is now back on track. It is also the world’s largest exchange by volume. This means that Binance’s APIs offer unmatched access to global liquidity and trading infrastructure. Additionally, Binance offers the trust that comes with its global brand and name.

Features

• Spot, margin, and futures trading APIs: Developers can integrate spot and margin trading functionality into their apps. This feature is perhaps one of the most interesting aspects about Binance’s API.
• Scalability: The API works well for both small apps and big businesses. It’s fast and responsive. This makes it perfect for platforms that need quick trades or live crypto updates.
• Language support: Binance API’s language support makes it an ideal choice for developers and start-ups in different parts of the world.

Binance is the best option for algorithmic trading platforms, portfolio and asset management dashboards, and crypto payment or DeFi applications needing deep liquidity pools. But, Binance’s API may require more compliance steps, and integration might be trickier for smaller teams.

4. Kraken API

Kraken might not be the most popular exchange out there, but over the years, it has built a reputation for strong security, transparent operations, and long-standing reliability. Kraken’s newly started API covers spot, margin, staking, and futures markets. It seems to be well-suited for developers who value compliance and uptime.

Features

• Security: With traits like 2FA and advanced encryption for data transactions. Kraken’s security is air tight. 
• Coins supported: Kraken covers a wide range of cryptocurrencies and provides access to real-time pricing data. 
• Customizable: Kraken’s API is highly customizable and this makes it an ideal choice for developers who want more freedom when it comes to tailoring the trading experience.

Kraken seems to be the perfect choice for exchanges targeting North America and Europe, compliance-heavy apps needing fiat integration and platforms offering futures and leverage trading. In spite of all of its benefits, Kraken’s API is less flashy than some others. Nonetheless, it is trusted by professional traders and financial apps alike.

5. Bitfinex API

Launched in 2012, Bitfinex is an interesting crypto exchange which has managed to land a spot on most traders’ radars. Bitfinex’s API is a strong product offering developers access to in-depth market data, and trading capabilities.

Features 

• Top-notch trading tools: Bitfinex supports margin trading, peer-to-peer lending, and derivatives through the API.
• Security: When it comes to security, Bitfinex does not cut corners. Its emphasis on security sets it apart.  
• Market data access: Similar to the other APIs on this list, Developers can access real-time order book depth, historical price data, and market summaries across a wide variety of crypto pairs.

Bitfinex API is the perfect solution for trading platforms looking to offer margin or derivative trading, fintechs developing advanced investment tools, and apps that require concrete security. The only drawback is its reputation that has been slightly marred with controversies in the past. 

To sum it up

From our exploration into APIs in this article, it’s become clear that APIs are hugely advantageous as they act as intermediaries that allow different software systems to communicate and exchange data. In the crypto world, with the benefits APIs provide, these tools have become more or less indispensable. They help customers of crypto platforms access real-time market data, execute trades, and manage accounts, among several other benefits. In today’s market, most crypto exchanges provide API solutions for businesses and several of them have customizable functionality and advanced security features. Among them, ChangeNOW stands out with its easy integration and broad asset support.

To learn more about ChangeNOW API, visit its official website and socials.