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Send Base mainnet transactions through a private, optimized path to reduce inclusion delays. Works with your existing HTTPS and WebSocket endpoints.
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Build onchain apps, power DeFi, and connect AI agents with reliable, high-performance Base RPC infrastructure.
Access Base Denim’s native 200 ms blocks through a single, geo-balanced endpoint. Your requests automatically reach the nearest available region, with no manual region selection or extra setup.
Read historical state, debug contract execution, and scale high-volume Base workloads.
Send Base mainnet transactions through a private, optimized path to reduce inclusion delays. Works with your existing HTTPS and WebSocket endpoints.
RPS ティア内で、一貫したパフォーマンス、無制限のリクエスト、そして予測可能な月額コストを実現し、大容量のRPCワークロードをスケールアウトできます。
Query historical Base contract state and backfill event logs for indexers, DeFi analytics, and accounting. Access archive RPC through your Chainstack endpoint.
Inspect Base transaction execution with debug_traceTransaction and call traces. Diagnose reverted calls and understand smart contract behavior.
Read pool state, simulate swaps with eth_call, and track transaction receipts from Base’s native blocks. Submit signed transactions for trading bots, market makers, and DeFi strategies.
Choose Base trading infrastructure
Follow new blocks and contract events over WebSockets. Backfill logs with eth_getLogs and query historical state through archive RPC for indexers, analytics, and transaction monitoring.
Explore Base RPC methods (opens in a new tab)
Read ETH balances, ERC-20 balances and allowances, and transaction receipts. Connect viem or ethers to Base mainnet and Sepolia endpoints.
Get a Base RPC endpoint
Check balances, submit signed token transfers, and track receipts for Base payment flows. Your application stays in control of signing and settlement logic.
Explore Base developer tools (opens in a new tab)
Deploy Base endpoints with Chainstack MCP. Give agents RPC access for contract reads, simulations, and signed transaction submission.
Chainstack のAIツールを詳しく見るGive production applications their own Base RPC infrastructure. Dedicated Nodes reserve compute and storage for your workload, with Chainstack managing node deployment and maintenance.
Select Base mainnet or Sepolia to estimate monthly infrastructure costs for your deployment.
Feedback on Base RPC, archive backfills, and the wider Chainstack experience.
the endpoint was ready quickly, performance has been consistent, and the team was helpful whenever we had questions about the integration.The Growth plan delivered exactly that. Fast, no gaps, no silent empty responses. The backfill completed cleanly.I am pretty happy with the Chainstack experience so farAs for me, the price meets the service quality: low-latency and reliable RPC endpoints, fast support and clean UI for node performance monitoring「Moving to Growth」の導入により、プロジェクトの規模拡大に伴い必要となっていた処理能力と信頼性の余裕を確保することができました。
Compare Chainstack’s Base RPC response times and request success rates against other providers across Europe, the US, and Asia. Explore P50, P95, and P99 latency in Chainstack Compare.
Compare Base RPC providers （新しいタブで開きます）Deploy and manage Base mainnet and Sepolia nodes on your own servers or cloud infrastructure with Chainstack Self-Hosted. Keep control of your RPC infrastructure and data, with a web interface to deploy, manage, and monitor your nodes.
Get free Base Sepolia ETH from the Chainstack Base faucet to pay testnet gas, deploy smart contracts, and test onchain applications. Connect your Base Sepolia RPC endpoint to ethers.js, viem, Hardhat, or Foundry to validate contract calls and transaction flows before mainnet.
The faucet tops up eligible wallets to 0.5 Base Sepolia ETH, with a claim available every 24 hours.
Get Base Sepolia ETH （新しいタブで開きます）
Read USDC balances on Base mainnet with eth_call, using the example from our Base API reference.
インストールガイドを見るhttps://base-mainnet.core.chainstack.com/YOUR_ENDPOINT_IDwss://base-mainnet.core.chainstack.com/YOUR_ENDPOINT_IDCreate a Base node on your chosen network. Copy your HTTPS URL from Access and credentials and replace the example URL. The mainnet example uses the contract and calldata from our API reference. For Base Sepolia, use a contract deployed on that testnet and its calldata.
Get a Base RPC endpointcurl --request POST \
--url https://base-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID \
--header 'Content-Type: application/json' \
--data '
{
"jsonrpc": "2.0",
"method": "eth_call",
"id": 1,
"params": [
{
"to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"data": "0x70a082310000000000000000000000001985ea6e9c68e1c272d8209f3b478ac2fdb25c87"
},
"latest"
]
}
'このレスポンスは、ABIエンコードされた契約データを result. eth_call トランザクションをブロードキャストせずに状態を読み取ります。
Free developer access and paid plans for Base applications, onchain services, and enterprise teams.
Explore Base RPC comparisons, testnet resources, and practical setup guides.
Compare Base RPC infrastructure for onchain applications.
記事を読む
Get Base Sepolia test ETH and start testing your app.
記事を読む
Choose RPC infrastructure for Base trading workloads.
記事を読む
Connect your first Base mainnet or Sepolia endpoint.
記事を読む当社の開発者体験チームによるオープンソースプロジェクトをご覧ください。実践的なガイドを参考にしたり、解説動画を見たりして、ご自身のアプリケーションに合わせてコードをカスタマイズしてください。
Python · AI agents
Follow a Base and Uniswap v4 project from manual swaps to an autonomous trading agent. Work with on-chain data, model training, and trade execution.
Go · Flashblocks
Compare transaction confirmation times across Base endpoints. Test synchronous submission with eth_sendRawTransactionSync or asynchronous submission with receipt polling.
Python · オンチェーン・リスナー
動作確認済みのPythonリスナーを使用して、FOMOのオンチェーン取引フローを追跡します。RPCおよびWebSocket接続を通じて、スマートウォレットのアクティビティ、決済契約、スワップイベントを監視します。
A Base RPC endpoint is a URL your application uses to communicate with a Base blockchain node. It lets you read balances, call smart contracts, retrieve event logs, estimate gas, and submit signed transactions through the Ethereum-compatible JSON-RPC API.
Create a Chainstack account, create a project, and deploy a Base node on mainnet or Sepolia. Open Access and credentials and copy the HTTPS endpoint. This is your Base RPC URL. Add it to your wallet, SDK, or development framework.
Yes. The Chainstack Developer plan includes 3 million request units per month, an overall limit of 25 requests per second, one node, and WebSocket access. No credit card is required. Individual methods may have additional limits. Transactions on Base still require gas.
Base mainnet uses chain ID 8453. Base Sepolia uses chain ID 84532 and is intended for development and testing. Both use ETH for gas, but Sepolia uses test ETH. Configure your application with the endpoint and chain ID for the same network.
Base publishes https://mainnet.base.org for mainnet and https://sepolia.base.org for Sepolia. Chainstack provides an authenticated RPC URL for your deployed node, with account-based usage tracking, published plan allowances, and options for archive data, tracing, and dedicated infrastructure.
Global Nodes provide managed, geo-balanced Base RPC access with automatic routing. Dedicated Nodes reserve compute and storage for your workload and support deployment-specific configurations. Choose based on resource isolation, configuration, and workload requirements.
A Base archive node provides historical account and smart contract state. Use it to query balances and contract storage at past blocks or run historical contract calls for analytics and backtesting. Chainstack archive access is available starting from the Growth plan.
Yes. Base Global Nodes on paid plans support Debug & Trace APIs. Methods such as debug_traceTransaction and trace_transaction help inspect contract execution and diagnose failed transactions. Check the Base methods reference for availability on your node configuration.
Yes. Chainstack Base WebSocket endpoints let your application follow new blocks with newHeads and contract events with logs. Base Denim’s native 200 ms blocks provide frequent updates for trading apps, payment monitoring, and indexers. WebSocket access is included in the Developer plan.
Optimized submission routes eth_sendRawTransaction calls through a private, optimized path designed to reduce inclusion delays. It is available on Base mainnet Global Nodes on every plan, including Developer. If that path fails, submission falls back to the standard node route. It does not guarantee transaction inclusion.
Yes. The Unlimited Node add-on provides unlimited RPC requests within your selected RPS tier for a fixed monthly add-on fee. It is available starting from the Growth plan. Your subscription and other add-ons are billed separately.
Yes. Chainstack Self-Hosted lets you deploy and manage Base nodes on infrastructure you control. The Community edition is free; you pay for your own servers or cloud resources. Use the installation guide to set up your deployment.
Open the Chainstack Base Sepolia faucet, enter your wallet address and Chainstack API key, and submit a claim. The faucet tops eligible wallets up to 0.5 Base Sepolia ETH every 24 hours. Use it to pay testnet gas for smart-contract deployments and test transactions through your Base Sepolia RPC endpoint. Wallet eligibility requirements are listed on the faucet page.
Connect your application to a Base HTTPS endpoint to query balances, read smart contracts and event logs, estimate gas, and submit signed transactions. Common JSON-RPC methods include eth_getBalance, eth_call, eth_getLogs, eth_estimateGas、および eth_sendRawTransaction. Base Denim uses native canonical blocks instead of Flashblocks. Use the WebSocket endpoint with eth_subscribe: newHeads for new blocks and logs for contract events.
Base is EVM-compatible, so you can use ethers.js or viem for JavaScript and TypeScript, web3.py for Python, and Hardhat or Foundry for smart contract development. Configure your Base RPC URL and network in your chosen tool. See the Base API reference and Base tooling guide for supported methods and integration examples.
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