Soneium API for Wallet Data, Tokens & Onchain Positions
Complete Soneium API Product Suite
Production-ready endpoints that power the next generation of Base applications.
Get comprehensive wallet holdings with real-time pricing and portfolio analytics
Monitor DeFi positions across thousands of protocols with detailed yield and risk analytics
Access enriched transaction data with smart contractinteraction details
Subscribe to wallet activities with real-time notifications and custom triggers
Track portfolio performance with detailed profit and loss calculations
Our API is designed for flexibility. Request custom data aggregations, specialized analytics, or enterprise-specific endpoints.
Trusted by Leading dApps, Wallets, and Enterprises
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Why Choose Our Soneium API?
Data updates within milliseconds of new blocks.
Used by apps serving millions of onchain users.
Integration
Add blockchain data to apps without any backend work
Soneium Network Snapshot
Soneium is an EVM-compatible chain designed for high-throughput, consumer-grade applications. Backed by by Sony Block Solutions Labs, part of Sony Goup. With Zerion API, you can read Soneium wallet data, token metadata & prices, transaction history, and normalized DeFi and NFT positions via one schema.
Key features
- EVM-compatible with familiar dev tooling
- Unified **/positions** endpoint for DeFi/NFT holdings
- Closely integrated with Astar Network (zkEVM)
- Focused on GameFi and NFTs
Built for Consumer Scale and Enterprise Reliability
Powering applications from startups to fintech companies with infrastructure that scales seamlessly and delivers consistently.
RPS
Guaranteed
Uptime
Infrastructure Built to Scale
Built for Consumer Scale and Enterprise Reliability
Simple, Transparent Tiers
Start building for free. Upgrade as you scale.
For solo builders and teams who want to test before scaling.
For growing teams who want to move fast
For fast-growing teams with higher traffic & support needs
For scale-ups & enterprises with high volume or custom needs
Real results from teams shipping with Zerion API
Trusted by Industry Leaders
Join thousands of satisfied developers who trust our APIs for their mission-critical applications.
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helped validate key wallet use-cases well before Warpcast Wallet even existed."
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Ready to Build the Future?
Join the thousands of developers already building on our platform. Start with our free tier and scale as you grow.
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FAQ
Call the **/positions** endpoint. It returns normalized holdings across supported protocols and NFTs, including staked assets, LP shares, lending positions, and collections. It's ready to display in dashboards and wallets.
Combine **/positions** with **/transactions** to show activity, and with token metadata/price endpoints to compute valuations and label assets consistently.
No. Zerion API abstracts RPCs and indexing so you can use the read API directly without maintaining infra.
Yes. The schema is consistent across chains, so your Soneium integration mirrors Ethereum, L2s, and other EVM networks. In fact, you can fetch portfolios and positions from all supported chains with a single call.
Generate a Zerion API key, pick a known Soneium address, call **/positions**, and verify the normalized portfolio output meets your UI needs.
Still have questions?
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