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Base-Sepolia RPC Endpoint and API

Base-Sepolia is the official testnet for Base, a secure, low-cost Ethereum Layer 2 built on the OP Stack and incubated by Coinbase. It provides a production-parity environment for developers to test smart contracts, dApps, and wallet integrations before deploying to Base Mainnet. OnFinality offers managed Base-Sepolia RPC endpoints, giving you reliable access to the testnet without running your own node.

Chain ID84532

CurrencyETH

注册 Free Plan，可将速率提升至 40 req/sec，并获得 API 使用与性能洞察。立即开始

公共接口速率限制为 5 req/sec

快速开始

主网 Sepolia

curl -H 'Content-Type: application/json' -d '{"id":1,"jsonrpc":"2.0","method":"eth_blockNumber"}' 'https://base-sepolia.api.onfinality.io/public'

curl -H 'Content-Type: application/json' -d '{"id":1,"jsonrpc":"2.0","method":"eth_blockNumber"}' 'https://base-sepolia.api.onfinality.io/public'

HTTPs

https://base-sepolia.api.onfinality.io/public

https://base-sepolia.api.onfinality.io/public

升级 Growth Plan

高性能
强大的 RPC 分析
最高 500 rps
无每日响应限制
优先支持
去中心化服务器

立即开始

OnFinality Base-Sepolia RPC features

OnFinality provides authenticated HTTP endpoints for Base-Sepolia, designed for team projects and higher-volume workloads. Key features include:

Archive access: Query historical state for debugging and analytics
Request analytics: Monitor usage, errors, and limits through the OnFinality dashboard
Scalable infrastructure: Upgrade from shared endpoints to dedicated nodes as your needs grow
Global availability: Endpoints hosted in N. Virginia with low-latency access

资源

附加信息

Build faster with Base-Sepolia RPC endpoints

Use OnFinality's Base-Sepolia RPC APIs to connect wallets, dApps, dashboards, bots, and backend services without operating your own node from day one.

Public endpoint testing

Start with the Base-Sepolia public RPC endpoint for lightweight checks, prototypes, and quick integration tests.

Authenticated API access

Move production traffic to authenticated endpoints when you need clearer limits, analytics, and operational visibility.

Standard RPC methods

Query Base-Sepolia blocks, transactions, balances, events, and chain state through HTTPS JSON-RPC workflows.

Operate Base-Sepolia infrastructure with more control

Production teams need more than an endpoint URL. They need observability, predictable capacity, and a path from shared RPC access to isolated infrastructure.

Request visibility

Track usage patterns and response activity so your team can understand traffic growth before it becomes an incident.

Dedicated node path

Use dedicated Base-Sepolia nodes when your workload needs isolated resources, custom operations, or stronger capacity planning.

Archive and historical data

Plan for archive access when analytics, audits, indexers, or advanced app features need older Base-Sepolia state.

Choose the right Base-Sepolia RPC setup

Different Base-Sepolia products need different infrastructure. OnFinality gives teams a practical path from public RPC testing to production-grade API and node operations.