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BNB Chain APIs & RPC: Build Low-Fee DeFi Apps | 1inch Business
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Bsc A high-throughput, EVM-compatible Layer 1 blockchain offering low fees and strong scalability.

TVL 5.6B
APIs Enabled 14

A leading blockchain for scalable applications

Massive user adoption.

BNB Chain consistently processes some of the highest daily active addresses and transaction volumes across all blockchains.

Low fees and high throughput.

With block times around 3 seconds and very low gas fees, BNB Chain is optimized for fast, affordable transactions at scale.

Expansive ecosystem of dApps.

From DeFi protocols and NFT marketplaces to Web3 gaming, BNB Chain supports thousands of decentralized applications.

Create your tailored Web3 plan

Choose your APIs
Swap API Orderbook API Balance API Spot Price API Token API Transaction API Portfolio API Gas Price API NFT API Traces API History API Web3 RPC API Domain API Token Details API Charts API
$20/mo

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Integrate in minutes, debug without leaving your IDE. Docs, SDKs, and auth optimized for agentic development.

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API documentation

Learn how to use the API with our guides and examples.

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Reduce time to production

SDKs

Take advantage of our SDKs to speed up your backend integration.

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Support

Answers to common questions and 24/7 support regardless of subscription.

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Questions? Answers.

What is BNB Chain, and why build on it?

BNB Smart Chain (formerly BSC) is an EVM-compatible L1 using PoSA, offering fast blocks and low fees while supporting standard Ethereum tooling—appealing for high-throughput DeFi like swaps and aggregation.

Is BNB Chain EVM-compatible for Ethereum tooling?

Yes. BNB Chain fully supports the EVM, so Solidity contracts and tools like Remix or Truffle work with minimal or no changes.

How to add BNB Chain to your Wallet?

Use the following chain ID, RPC, and explorer:

Mainnet:
Network name: BSC Mainnet
RPC: https://bsc-dataseed.bnbchain.org (plus other dataseeds)
Chain ID: 56
Symbol: BNB
Explorer: https://bscscan.com

Is eth_getLogs limited or disabled on some public BNB Chain RPCs?

Yes. The BNB docs state eth_getLogs is disabled on certain Mainnet public endpoints. Instead, use a third-party RPC or WebSockets for streaming new logs. Also expect block-range and response limits when allowed.

Are public BNB Chain RPC endpoints production-ready, or should I use dedicated ones?

Public endpoints are shared and rate-limited (BNB docs state 10K requests/5 min). For sustained and latency-sensitive workloads, consider using a dedicated provider, such as 1inch.

How to estimate gas on BNB Chain via JSON-RPC?

Use the 1inch Gas Price API.

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