Unichain API
Enterprise-grade Unichain wallet data — balances, positions, transactions, NFTs, and PnL — across Unichain and 50+ chains in one API.
curl --request GET \--url 'https://api.zerion.io/v1/wallets/{address}/positions/?currency=usd' \--header 'accept: application/json' \--header 'authorization: Basic <API_KEY>'
Unichain Network Snapshot
Ethereum L2 built by Uniswap Labs on the OP Stack as part of the Optimism Superchain, designed as a low-cost home for DeFi and cross-chain liquidity. It runs Flashbots' Rollup-Boost, streaming 200ms Flashblocks with TEE-based ordering and MEV protection, and Uniswap v4 anchors its DeFi activity.
Key features
Unichain API endpoints
Portfolio Data
Track Unichain tokens, NFTs, and balances across Unichain & 50+ chains with a single call.
Explore the Portfolio Data API
One API, every major chain
Unichain, Ethereum, Base, Solana, Arbitrum and 45+ more networks — queried in a single call.
Ethereum
Base
Solana
Arbitrum
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Polygon
Avalanche
BNB Chain
Robinhood
Linea
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Zora
Celo
Gnosis
Fantom
Aurora
HyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMWhy Choose Our
Unichain API?
Ship faster
Go live in minutes, not months
Grab a free key, paste one request, and you're serving portfolio data. No nodes, no indexers, no infra to maintain.
Speed
Fast everywhere your users are
A globally cached edge keeps every query fast, so your app feels instant no matter where your users open it.
Freshness
Balances update in seconds
Balances, positions, and transactions land within seconds of confirmation. Never stale, never guessing.
Scale
Scale from one user to millions
One request spans Solana, Ethereum, Base and 50+ chains. The same endpoint carries your first user and your millionth.
Built for Consumer Scale and Enterprise Reliability
The same infrastructure that runs the Zerion wallet — sized for everything from a first prototype to fintech products in production.
Stay ahead with the Zerion API
New endpoints, chains, and webhooks — straight to your inbox.
Simple, transparent tiers
Start building for free. Upgrade as you scale.
For early prototypes and proofs of concept
Get Started Free- 2K requests / day
- 3 RPS limit
- Chat widget
- Best effort support
For shipping MVP without running any Infrastructure
Start building- Up to 250K requests / month
- 10 RPS
- Telegram group
- Priority support
For apps preparing for launches or already in production
Start building- Up to 1M requests / month
- 25 RPS
- Slack or Telegram channel
- Priority support
Custom pricing & features
For scale-ups & enterprises with high volume or custom needs
Contact salesDeFi Positions, Wallet Portfolio Chart, and Wallet P&L endpoints are limited to 25% of every plan quota and aren’t covered by overages.
What can you build?
Wallets & Stablecoins
Power portfolio views, transaction history, and in-app swaps with one API — across every chain and stablecoin your users hold.
Fintech & Neobanks
Add portfolio charts, PnL, and transaction history to your app — no blockchain node to stand up, no infra to maintain.
AI Agents
Wallet holdings, DeFi positions, and PnL in a single call. Pay per request with x402 on Base — no subscriptions, no keys.
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Trusted by the companies you know
From multichain wallets to onchain apps — teams build on Zerion API.
“Zerion API powers Kraken 2.0 with reliable token balances, P&L, and transaction history through one consolidated integration, making it easier to scale to more users.”
“We've worked with Zerion API since day zero, even before launching Uniswap Wallet. From multichain positions to EIP-7702 batching, they've been key partners.”
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“Add a fresh customer quote here — pulled from the cleaned-up testimonials doc.”
Built for developers.
Trusted by enterprises.
Give wallets, AI agents, and consumer apps reliable access to wallets, positions, transactions, and DeFi data across chains.
FAQ
If you have any questions