BNB Smart Chain API
Enterprise-grade BNB Smart Chain wallet data — balances, positions, transactions, NFTs, and PnL — across BNB Smart Chain 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>'
BNB Smart Chain Network Snapshot
The EVM Layer 1 at the core of BNB Chain, using Proof of Staked Authority consensus. After the Maxwell and Fermi hard forks cut block times to 0.45 seconds, BNB Smart Chain is among the fastest EVM chains, with low fees and one of the largest retail DeFi and stablecoin user bases.
Key features
BNB Smart Chain API endpoints
Portfolio Data
Track BNB Smart Chain tokens, NFTs, and balances across BNB Smart Chain & 50+ chains with a single call.
Explore the Portfolio Data API
One API, every major chain
BNB Smart Chain, Ethereum, Base, Solana, Arbitrum and 45+ more networks — queried in a single call.
Ethereum
Base
Solana
Arbitrum
OptimismEthereumBaseSolanaArbitrumOptimismEthereumBaseSolanaArbitrumOptimismEthereumBaseSolanaArbitrumOptimismEthereumBaseSolanaArbitrumOptimismEthereumBaseSolanaArbitrumOptimism
Polygon
Avalanche
BNB Chain
Robinhood
Linea
ScrollPolygonAvalancheBNB ChainRobinhoodLineaScrollPolygonAvalancheBNB ChainRobinhoodLineaScrollPolygonAvalancheBNB ChainRobinhoodLineaScrollPolygonAvalancheBNB ChainRobinhoodLineaScrollPolygonAvalancheBNB ChainRobinhoodLineaScroll
Zora
Celo
Gnosis
Fantom
Aurora
HyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMZoraCeloGnosisFantomAuroraHyperEVMWhy Choose Our
BNB Smart Chain 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.
.da6f4144.webp)
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.”
“Add a fresh customer quote here — pulled from the cleaned-up testimonials doc.”
“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