What is the Reown blockchain API and how does it work?
Blockchain app builders often face a fragmented reality: to create a truly functional application, you need more than just a connection to a wallet; you need to query the blockchain for balances, resolve human-readable names like ENS, and track transaction histories across multiple chains.
Historically, this required integrating several third-party APIs or managing complex RPC configurations for every supported network. Blockchain APIs exist to bridge this gap, serving as the essential infrastructure that allows developers to focus on building features rather than wrestling with low-level data retrieval.
What is the Reown blockchain API
The Reown blockchain API is a specialized RPC service that powers the core blockchain functions within the Reown AppKit. While WalletConnect is the protocol that handles the "handshake" between wallets and apps, the blockchain API is the engine that provides the actual data—such as account balances and transaction history—once that connection is established. It is a vertical product platform built on top of the protocol to turn raw connectivity into usable, high-performance features.
Learn more about Reown's blockchain API in the docs ->
Why are blockchain APIs important?
A blockchain API is critical because it abstracts the immense complexity of multi-chain data. For builders, it means shipping faster without rebuilding infrastructure from scratch.
Imagine you’re building a DeFi dashboard:
Without a blockchain API, you’d need to find and maintain separate RPC endpoints for Ethereum, Solana, and Bitcoin, implement individual logic to fetch balances for each, and manually integrate an ENS resolver to show user identities.
With Reown’s blockchain API, you get a single, unified transport layer. The Reown SDK automatically handles balance fetching, identity resolution (ENS), and transaction history across over 500 wallets and multiple ecosystems using the same integration.
What type of apps is the blockchain API for?
The blockchain API is designed for growth-driven teams and builders across the spectrum of onchain commerce, including:
Social Apps
Reown’s blockchain API allows for near-instant ENS resolution to display human-readable usernames.
DeFi Apps
The Blockchan API also lets you track real-time account balances and transaction histories for swaps and lending.
Governance Apps
For governance, the blockchain API allows your app to verify holdings across chains before allowing a user to vote.
Blockchain Games
The blockchain API also facilitates blockchain games, enabling smooth wallet interactions and verify asset ownership without disrupting gameplay.
How does Reown's blockchain API work
Unlike standard RPCs that might only handle basic transaction relaying, the Reown blockchain API is optimized for the frontend requirements of the Reown SDK. It operates as a high-performance transport layer that supports both HTTP and WebSocket RPCs.
We chose this approach to eliminate the "fragmentation" often seen in multi-chain apps. By centralizing requests for identity (Identity API), history, and balances through a single service, we can offer near-instant data delivery. It supports a wide range of namespaces, including eip155 (EVM), solana, bip122 (Bitcoin), and ton, ensuring a consistent UX regardless of the underlying network.
How to integrate the Reown blockchain API
For most builders using the Reown SDK, the blockchain API is integrated by default—no manual setup is required. However, to use it, you must first initialize your project through the Reown Dashboard.
Step 1: Get your Project ID
Sign in to the Reown Dashboard and create a new project to generate a unique Project ID. This ID is required to authorize your API requests.
Step 2: Install AppKit
Add the necessary dependencies to your project (e.g., React, Next.js, or Vue).
Step 3: Initialize the Instance
Set up the Reown AppKit instance. The blockchain API is automatically used as the transport layer for your configured networks.
Blockchain API: Unlocking Seamless interactions and insights.
The blockchain API doesn't just move data; it enables growth-ready insights; offering powerful analytics via the Reown dashboard. This allows your team to track user sessions, wallet behavior, and drop-off points in one place, turning technical infrastructure into a business tool that helps you optimize onboarding and retention.
Explore how to set up Reown Analytics!
Blockchain API FAQ
Does the blockchain API support non-EVM chains?
Yes. It provides unified support for Ethereum, Solana, Bitcoin, TON, and others, allowing you to use a single SDK for all these ecosystems.
Is there a usage limit for the blockchain API?
The Blockchain API is free for up to 2.5 million requests per 30 days. For up to 5 million requests, you can upgrade to Reown Pro, and also get access to in-depth analytics, multiwallet linking and team management. For more than 5M requests per month, contact our sales team to discuss an Enterprise plan via our form.
