Soumission optimisée
Send Base mainnet transactions through a private, optimized path to reduce inclusion delays. Works with your existing HTTPS and WebSocket endpoints.
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.
Faites évoluer vos charges de travail RPC à haut volume tout en bénéficiant de performances constantes, d'un nombre illimité de requêtes au sein de votre niveau « RPS » et de coûts mensuels prévisibles.
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 infrastructureFollow 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 endpointCheck 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.
Découvrez les outils d'IA d'ChainstackGive 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.
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 (s'ouvre dans un nouvel onglet)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 (s'ouvre dans un nouvel onglet)Read USDC balances on Base mainnet with eth_call, using the example from our Base API reference.
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"
]
}
'La réponse renvoie des données de contrat encodées en ABI dans result. eth_call lit l'état sans diffuser de transaction.
Consulter la référence des méthodes (s'ouvre dans un nouvel onglet)
Free developer access and paid plans for Base applications, onchain services, and enterprise teams.
Comprend :
Toutes les fonctionnalités destinées aux développeurs, ainsi que :
Les modules complémentaires et l'infrastructure dédiée d'Node sont facturés séparément.
Explore Base RPC comparisons, testnet resources, and practical setup guides.

Compare Base RPC infrastructure for onchain applications.
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Get Base Sepolia test ETH and start testing your app.
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Choose RPC infrastructure for Base trading workloads.
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Connect your first Base mainnet or Sepolia endpoint.
Lire l'articleDécouvrez les projets open source développés par notre équipe chargée de l'expérience développeur. Suivez nos guides pratiques, visionnez nos tutoriels et adaptez le code à votre application.
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.
Compare transaction confirmation times across Base endpoints. Test synchronous submission with eth_sendRawTransactionSync or asynchronous submission with receipt polling.
Suivez les flux de transactions sur la chaîne de FOMO grâce à des écouteurs Python opérationnels. Suivez l'activité des portefeuilles intelligents, les contrats de règlement et les événements d'échange via des connexions RPC et WebSocket.
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, et 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.