Summary
- Crypto swap APIs enable businesses to incorporate token exchanges into their applications, accessing external liquidity without needing to construct their own exchange infrastructure.
- Case studies illustrate how these tools address specific challenges, ranging from coverage of non-EVM assets to reducing onboarding drop-offs and minimizing single-provider risks.
- The benefits a business derives from these APIs vary based on its product type, with wallets, aggregators, and protocols utilizing the same API in different manners.
For numerous wallets, fintech solutions, and cross-chain platforms, embedding swap infrastructure has emerged as a strategy to enhance asset diversity, optimize execution, and create additional revenue sources without the intricacies associated with running an exchange.
Rather than constructing their liquidity systems from the ground up, organizations are increasingly depending on crypto swap APIs (Application Programming Interfaces) that link users to various liquidity sources while maintaining established user experiences.
Real-world applications demonstrate how effective crypto APIs can simplify user interactions, bolster retention, and facilitate scalable expansion through embedded swaps.
Below are seven instances of companies leveraging this infrastructure effectively.
1. Cross-Chain Aggregators
Rubic, a cross-chain aggregation platform that debuted in 2020, processes trades across over 340 decentralized exchanges, bridges, and intent protocols across more than 70 networks.
While its support for Ethereum Virtual Machine (EVM)-compatible chains was robust, leading ecosystems like Bitcoin (BTC), Monero (XMR), and Cardano (ADA) operate on distinct architectures, necessitating custom bridges, dedicated nodes, and separate liquidity pipelines to facilitate direct support.
To overcome this issue, Rubic integrated the ChangeNOW Crypto Exchange API as an external execution layer for non-EVM assets, which allowed for instant swaps of BTC, XMR, and ADA through a single integration point.
This led to quicker deployment on new chains, higher success rates for swaps on cross-chain routes, and increased transaction volume for highly sought-after pairs related to the newly supported assets.
"Exchange speeds are excellent, and the range of supported networks is broad," stated the Rubic team, emphasizing that having a dedicated account manager facilitated swift resolution of issues without the usual delays associated with support queues.
For AI-native products, the challenge of cross-chain coverage manifests differently.
Warden, an AI trading interface that enables users to manage and swap assets via a chat interface, encountered routing bottlenecks soon after launch, with RPC limits jeopardizing reliability and initial liquidity confined to the Solana ecosystem.
By incorporating the Uniswap Trading API, Warden scaled to over 650,000 swaps across 14 chains within three weeks and launched in under 72 hours, supporting more than 500,000 users.
A secure crypto API influences all aspects of user experience, including uptime, transaction flow, data handling, and operational reliability.
Our latest piece discusses the importance of API security for crypto products and the teams behind them. 👇 https://t.co/haXn8e30O2
— ChangeNOW (@ChangeNOW_io) May 14, 2026
2. Exchange Aggregators
An unnamed hybrid exchange aggregator that routes transactions across numerous platforms noticed that users were dropping off at the wallet-connection stage, even before pricing or coverage came into play.
In DeFi-centric flows, the connect-wallet step often serves as a point of exit for a portion of users, especially those with larger balances, who consider smart contract permissions and phishing risks prior to linking their wallets to unfamiliar platforms.
The aggregator replaced the requirement for wallet connections with a straightforward deposit-and-receive process utilizing the ChangeNOW Exchange API, enabling users to send assets to a generated address and receive swapped tokens in their preferred wallet without granting permissions or relinquishing custody.
The result was a reduction in user abandonment at initial interaction and access to a security-conscious demographic that typically avoids wallet connectivity.
"Definitely proceed with integration," a company representative remarked, noting the team found the customer support to be robust and the integration process seamless.
3. Protocols and Payments
Tonbankcard, an open financial protocol on the TON blockchain that organizes accounts as NFTs, faced challenges at the initial usage stage.
Users arrived with assets from different chains, but to fund a Tonbankcard account, assets native to the TON ecosystem were required.
Previously, addressing this mismatch necessitated leaving the product, locating an external exchange or bridge, manually completing the swap, and returning, with each additional step increasing the likelihood of user abandonment.
Tonbankcard integrated the ChangeNOW Exchange Widget into its interface, which the company claims cut the steps needed to fund an account by 50%.
This integration also enabled on-ramp and cross-chain swap capabilities for both fiat and crypto users.
Companies assessing payment infrastructure for similar situations can find fiat on- and off-ramp solutions included in ChangeNOW's API offerings, available upon request.
4. Generating Revenue from Swap Flows
The Tonbankcard integration yielded an additional benefit, establishing a revenue share model at 0.4% of transaction volume, thus creating a reliable income stream from in-app swap activities.
As users exchanged assets to fund their accounts, the protocol earned commissions on each transaction via a revenue-sharing structure, promoting early self-sustainability without introducing centralized control or added custody requirements.
ChangeNOW's partner program, akin to similar initiatives across the industry, begins at 0.4% of transaction volume and allows for commission variations based on asset, pair, or swap size.
Interface, a social platform and block explorer for the Ethereum ecosystem, adopted a similar strategy using the open-source DEX aggregation infrastructure layer 0x Protocol’s Swap API.
The team integrated 0x v2, the protocol's advanced trading engine with built-in monetization features and enhanced trade routing, in under a month, achieving $3.5 million in social trading volume within 70 days, with daily volume hitting $500,000 by the end of that timeframe.
The revenue was derived directly from swap fees embedded in the integration utilizing 0x's monetization controls, eliminating the need for separate billing infrastructure.
5. Super Apps
xPortal, a comprehensive crypto super app, directs every swap through an automated engine that assesses multiple liquidity providers and selects the best execution for each pair.
ChangeNOW was integrated directly into this engine and is chosen automatically whenever it offers the best rates, with full integration completed in just one week.
During a promotional period with zero deposit fees, ChangeNOW routes often won across supported pairs, including on EGLD, the native token of the MultiversX blockchain.
Users enjoyed better pricing without any alterations to their experience, resulting in higher conversion rates and enhanced swap activity for xPortal.
"Integrating partners deeply into existing systems, rather than merely adding superficial options, yields better outcomes," remarked former CEO Sergiu Biriș.
Digital asset platform Anchorage Digital took a similar approach for its institutional self-custody wallet, Porto.
The team integrated the Uniswap Trading API, offering institutional clients direct access to decentralized liquidity across over 14 blockchains without having to create the routing infrastructure themselves.
ChangeNOW x @xPortalApp: B2B Case Study 🎓
We reveal how non-custodial API swap integration enhanced execution speed, optimized routing paths, user experience modifications & interesting partnership outcomes.
Explore execution and B2B insights in our blog 👇https://t.co/Zz3Fo3lrIg
— ChangeNOW (@ChangeNOW_io) February 4, 2026
6. Scaling Wallets
The Bitcoin.com Wallet's in-app swaps gained popularity after their launch in 2021, but increasing demand revealed limitations in its single swap provider, leading to slower execution times and delayed support for trending tokens.
Creating a proprietary exchange system would have introduced licensing complexities, liquidity management burdens, and engineering risks to the core wallet product, prompting the team to adopt a multi-partner strategy, starting with ChangeNOW as a supplementary provider.
The company reported a 10% improvement in service stability, processing speeds increased by 15% to 18%, and the time to add in-demand assets was cut by 40%.
This increase in asset velocity resulted in a 20% to 25% rise in user activity and overall traffic.
"Collaborating with a partner who not only processes exchanges but also helps us stay fast, stable, and relevant for our users has been essential," said the Bitcoin.com Wallet team.
7. Products for Self-Custody
Zelcore, a multi-chain non-custodial wallet supporting over 70 blockchains, was designed with a focus on user control of private keys and a zero-knowledge approach to user data.
As the wallet grew, users could store assets in Zelcore but had to exit the platform to swap them, disrupting their experience and exposing them to custodial environments.
Establishing an in-house liquidity layer would have entailed KYC, AML, and licensing obligations, conflicting with the wallet's custody model.
Zelcore then integrated the ChangeNOW Exchange API in 2021, allowing swaps to occur within the wallet without the need for a separate exchange team or altering the custody framework.
Five years later, after transitioning to an aggregated backend that routes across various providers in both CeFi and DeFi, ChangeNOW is now the most utilized route in the system.
“The partnership endured through a complete crypto market cycle and Zelcore's shift to backend aggregation, a transition that displaces many providers, but which ChangeNOW adeptly navigated with us,” stated the Zelcore team.
Similarly, the crypto wallet Ledger opted to integrate the Uniswap Trading API into Ledger Wallet, enabling users to access decentralized swap features without leaving the app.
This integration provided permissionless on-chain liquidity while maintaining Ledger's hardware-backed security model.
For emerging wallets, the real challenge often arises post-launch.
A product may function well, and users may be testing it, but revenue often hinges on whether swaps are accessible within the interface from the outset.
Recognizing this hurdle, ChangeNOW's Fast-Track Program offers a limited number of selected wallet teams complimentary direct support to integrate its exchange API, activate revenue sharing, and gain launch visibility.
Once approved, partners can enable in-app swaps, activate revenue attribution, and start with a 0.4% share of exchange volume. The platform also assists approved projects with PR, social media exposure, conference participation, and hands-on launch guidance.
Conclusion
The effectiveness of crypto swap infrastructure is maximized when it aligns with the actual needs of the product, whether that involves coverage, custody, execution, onboarding, or revenue generation. The key takeaway is to begin with the end goal in mind and work backwards to identify the most suitable crypto swap API for those requirements.
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