Elysium mainnet is live! Get your lightning-fast RPC endpoints now.    Start building
  • Agents
  • Tarifs

Base RPC endpoints for onchain apps and agents

Build onchain apps, power DeFi, and connect AI agents with reliable, high-performance Base RPC infrastructure.

Base
https://base-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID
Créer un point de terminaison
Logo « Stars » du widget de la page d'accueil
get mcp.chainstack.com, deploy Base mainnet RPC node and give me the HTTPS endpoint
Essayez dans Codex Claude
ThorFiÉclats d'obusRFOXOdosTradingViewRippleCerclePendleTrust WalletBinanceGoldskyCertiKBlockpourNumioBanditNexoCoinGeckoUniDexVaiVLaunchWorkinmanZapperBitgetTrust WalletAoriArgentKaikoQuantstamp

Fast Base RPC, right where you need it

Mondial Node

Geo-balanced RPCBuilt for onchain apps

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.

Illustration d'un réseau mondial d'node s basées sur la blockchain

Your full development stack for Base

Read historical state, debug contract execution, and scale high-volume Base workloads.

Icône « node » illimité

Illimité Node

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.

25 requêtes / seconde
$ 149 $ /mois
25100250500

Build and scale with reliable Base RPC

Logo « Infra Icon 1 » de la page d'accueil

Trade on Base

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
Logo « Infra Icon 2 » de la page d'accueil

Index Base events and history

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)
Logo « Infra Icon 3 » de la page d'accueil

Build wallets and onchain apps

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
Page d'accueil — Logo « Infra Icon 5 »

Connect AI agents to Base

Deploy Base endpoints with Chainstack MCP. Give agents RPC access for contract reads, simulations, and signed transaction submission.

Découvrez les outils d'IA d'Chainstack
Plus de 10 milliardsd'appels API quotidienssur Chainstack
Plus de 10 centres de données «Chainstack » à travers le monde
Accès à l'assistance 24 h/24, 7 j/7
Disponibilité supérieure à 99,99 %

Dedicated Base RPC for enterprise teams

Give production applications their own Base RPC infrastructure. Dedicated Nodes reserve compute and storage for your workload, with Chainstack managing node deployment and maintenance.

Dédié Node

Select Base mainnet or Sepolia to estimate monthly infrastructure costs for your deployment.

Node type
Chargement du prix…Commencer

What Base developers say about Chainstack

Feedback on Base RPC, archive backfills, and the wider Chainstack experience.

Témoignage d'un héros - Logo Bgthe endpoint was ready quickly, performance has been consistent, and the team was helpful whenever we had questions about the integration.Fedrick J.G2 (s'ouvre dans un nouvel onglet)
Témoignage d'un héros - Logo BgThe Growth plan delivered exactly that. Fast, no gaps, no silent empty responses. The backfill completed cleanly.Xavier · Base archive backfillCustomer feedback
Témoignage d'un héros - Logo BgI am pretty happy with the Chainstack experience so farAntoine · Base mainnet and testnetCustomer feedback
4,9/539 avisG2

Découvrez à quel point Chainstack est plus rapide

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)

Self-hosted Base RPC on your own infrastructure

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.

Chainstack Self-Hosted node assistant de déploiement
Logo « Card Bg1 » hébergé en propre

Surveillance, alertes et observabilité

Logo « Card Bg2 » hébergé en local

Configurations d'node s adaptées aux besoins

SOC 2ISO

Vos données sont toujours protégées

Base Sepolia faucet: free testnet ETH

Fund your wallet. Build on Base.

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)
Chainstack Illustration d'un « faucet » sur le testnet

Connect to Base RPC

Read USDC balances on Base mainnet with eth_call, using the example from our Base API reference.

HTTPS · Requêtes JSON-RPC
https://base-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID
WebSocket · abonnements en temps réel
wss://base-mainnet.core.chainstack.com/YOUR_ENDPOINT_ID

Create 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.

Base mainnet
curl --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)

Base RPC pricing

Free developer access and paid plans for Base applications, onchain services, and enterprise teams.

Des formules économiques adaptées à chaque type de charge de travail

À partir de40$/moisavec un abonnement annuel
Découvrez les formules payantes
De 20M demandes, y compris les demandes mensuellesComparer et convertir
  • Un débit plus élevé et des limites d'node s plus importantes

Toutes les fonctionnalités destinées aux développeurs, ainsi que :

  • Données d'archives Growth+
  • Extensions Growth+
  • Nodes Pro+ dédié
  • Authentification unique Pro+
  • Accès basé sur les rôles Business+
  • Nombre illimité d'utilisateurs Business+
Voir toutes les fonctionnalités

Les modules complémentaires et l'infrastructure dédiée d'Node sont facturés séparément.

Logo des utilisateursUne assistance exceptionnelle pour toutes les formules payantes
Pour les équipes qualifiées

Vous dépensez plus de 2 000 $ par mois en infrastructure RPC ?

Économisez plus de 50 % sur notre formule haut de gamme « Pay-as-you-go »

TelegramDiscuter sur Telegram (s'ouvre dans un nouvel onglet)

Build on Base with Chainstack Labs

Découvrez 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 FOMO trades on Base
Logo Python Python · Écouteurs sur la chaîne

Follow FOMO trades on Base

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.

Foire aux questions
What is a Base RPC endpoint?

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.

How do I get a Base RPC URL on Chainstack?

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.

Can I use Base RPC for free?

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.

What are the Base mainnet and Sepolia chain IDs?

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.

 

What is the difference between a public Base RPC URL and a Chainstack endpoint?

Base publishes https://mainnet.base.org pour le réseau principal et 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.

Should I use a Base Global Node or a Dedicated Node?

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.

What can I query with a Base archive node?

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.

Does Chainstack support debug and trace APIs on Base?

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.

Does Chainstack support Base WebSocket connections?

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.

What does optimized submission do on Base?

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.

Does Chainstack offer unlimited Base RPC requests?

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.

Can I run a self-hosted Base RPC node?

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.

How do I get free Base Sepolia ETH for testing?

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.

Base JSON-RPC API and developer tools

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.