How developers build and scale on 60+ chains with just one API

OKX OS Wallet API

As blockchain ecosystems become more diverse and multi-chain deployments become more essential, it's making dApp development more complex and costly.

Background: What is a Wallet API?

Wallet API is a set of programming interfaces that allow developers to build new wallets or integrate on-chain data and transaction management functionalities into their dApps. These APIs enable dApps to manage crypto assets, perform transactions, and access blockchain data focusing on wallet activities. With wallet API, developers can build and scale dApps with better access to on-chain data across different chains, including but not limited to multi-chain wallets, portfolio trackers, data dashboards, or user analytics tools in social-fi projects, and large-scale address management tools.

What is OKX OS Wallet API? One API for 60+ blockchains.

OKX OS Wallet API is a set of APIs for builders to:

• Build their own multi-chain EOA wallets via a single API that provides the critical wallet backend for account management, data query and transaction management on 60+ networks;

• Provide users with easier ways to monitor onchain assets and market trends with comprehensive onchain data and token prices across 60+ networks,

The OKX OS Wallet API is built to meet those challenges based on the battle-tested OKX wallet infrastructure for Web3 developers, with focus on:

• Enhanced multi-chain experience: OKX OS wallet API abstracts the complexity of interacting with different blockchain networks, providing a unified API to query and manage comprehensive crypto assets data across 60+ chains, including Ethereum-based (EVM) networks, UTXO chains, and mainstream heterogeneous chains like Solana and Fractal Bitcoin.

• Reduced time-to-market: By abstracting blockchain complexities and reducing the reliance on separate RPC resources, OKX OS wallet API allows development teams—big or small—to accomplish more in less time, cutting down on infrastructure and maintenance costs and speeding up time-to-market.

• Scalable and secure: Trusted and tested by millions of users through OKX wallets and OKX wallet API clients. This solution is battle-tested for enterprise-level operation. Wallet API offers enterprise-grade support, including dedicated technical support availability and high data processing capacity, designed to meet the highest stress-test standards and stringent technical requirements.

OKX OS wallet API allows developers to focus on innovation and improving user experience without concerns about the challenges of multichain development and cost of data acquisition and maintenance.

OKX OS Wallet API is built to make multichain dApp development fast and simple

1. One API for 60+ blockchains

Developing multichain dApps can be a daunting task—each chain comes with its own rules, design, and structure. Managing multiple chains can be a developer’s nightmare, especially when trying to integrate unique chains like Solana and Fractal Bitcoin alongside more common EVM chains. OKX OS Wallet API simplifies this by offering multichain support via a single API, providing seamless on-chain data queries and transaction management for over 60 different chains. Developers no longer need to battle for RPC resources or bear the cost of individual RPC calls for each chain. This abstraction of blockchain complexities and broad coverage allows developers to focus on building their dApps without getting bogged down by the technicalities of individual networks.

Table 1. OKX OS Wallet API Chain Support Overview

2. Advanced Transaction Management: Know Your Transaction

With advanced transaction management, developers can leverage the API to sign transactions, estimate gas fees, and track transaction statuses from initiation to completion. The OKX OS Wallet API provides pre-transaction gas estimation and simulating the execution of transactions across different blockchains. Unlike traditional methods that require constant querying, OKX OS Wallet API provides real-time notifications when transactions are confirmed, improving user experience and reducing the overhead of constant manual checks.

3. Real-Time, Accurate Data Aggregation

In a fast-moving ecosystem like blockchain, real-time data is key. The OKX OS Wallet API delivers real-time updates for wallet balances, transaction statuses, and token data. Whether you’re tracking address activities, tokens or NFTs, OKX OS wallet API ensures that data is always up-to-date, allowing for informed decision-making.

4. Security and Compliance

Security and compliance is a non-negotiable aspect of any dApps. By offering risk token filtering and secure key management, OKX OS wallet API also ensures that assets are protected. Blacklisted tokens or addresses associated with suspicious protocols (like Tornado Cash) can be automatically flagged, safeguarding both developers and users.

5. Millions of Wallets Managed in One Place

Managing multiple wallets across different chains can be cumbersome. OKX OS Wallet API makes it easy by allowing users to link multiple addresses across multiple chains to a single account. This unified approach enables users to view and manage their assets from a single interface, enhancing the overall wallet experience.For large-scale implementations, like centralized exchanges (CEX), the API can manage millions of addresses, allowing for real-time asset statistics across user accounts. Whether it’s tracking overall portfolio performance or implementing profit and loss (P&L) calculations, OKX OS Wallet API provides the infrastructure to handle complex, multi-address environments at ease.

6. Enterprise-Level Support

OKX OS also offers enterprise-level customer support, guiding developers through the complexities of blockchain integration and ensuring a smooth development process. Whether it’s troubleshooting, optimizing, or scaling, developers can rely on expert support at every step.

7. Bonus: Simple and Free to Use

Not only is the OKX OS Wallet API simple to use, but it’s also free. Developers can start building and experimenting without any upfront costs, making it a perfect safety net for those looking to dive into multichain development. Focus on innovation while we handle the technical challenges of blockchain integration.

Loved and Trusted By The Best

OKX OS Wallet API has been trusted by Silver Koi, Tomo wallet and 100+ other DApps:

"With OKX OS, we were able to develop core features quickly and at a low cost. It also allowed us to focus on managing the company instead of reinventing the wheel with back-end development."

- Claire Chen, co-founder and CEO at Silver Koi

"OKX OS provides not only a convenient and complete API but also responsive technical support that truly goes beyond expectations. It’s an essential platform for any project looking to scale seamlessly"

- Ryan Fang, co-founder and CEO at Tomo Wallet

Big BUIDLer Tools

The future of Web3 is multichain, and the OKX OS Wallet API is your gateway to building feature-rich, scalable wallets, data dashboards, and dApps across 60+ blockchain networks. With its access to comprehensive on-chain data, advanced transaction management, and simplified development process, developers can now create wallets and build wallet data without the hassle of managing blockchain intricacies.Whether you’re developing a Web3 wallet or a data dashboard, OKX OS Wallet API offers the tools you need to bring your vision to life, quickly and securely.

Start building with OKX OS Wallet API, or contact us in OKX OS discord.

Appendices: OKX OS Wallet API Data Capabilities and Transaction Services

Table 2. OKX OS wallet API Data Capabilities

Table 3. OKX OS wallet API Transaction Services

About OKX OS

OKX OS is a full-stack suite of BUIDLer tools made to move fast, so you can scale at speed. Build onchain, any chain. Our most well-known products include: OKX OS wallet API, DEX API, Marketplace API and Explorer API.

For more information about OKX OS and to start building, visit: https://www.okx.com/web3/build.

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