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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
Crear endpoint
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get mcp.chainstack.com, deploy Base mainnet RPC node and give me the HTTPS endpoint
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Fast Base RPC, right where you need it

Global Node

Geo-balanced RPCBuilt for onchain apps

Access Base through a single, geo-balanced endpoint. Your requests automatically reach the nearest available region, with no manual region selection or extra setup.

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Your full development stack for Base

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

Optimized submission icon

Optimized submission

Send Base mainnet transactions through a private, optimized path to reduce inclusion delays. Works with your existing HTTPS and WebSocket endpoints.

Gratis
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Ilimitado Node

Scale high-volume RPC workloads with consistent performance, unlimited requests within your RPS tier, and predictable monthly costs.

25 requests / second
$ 149 /mo
25100250500
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Base archive data

Query historical Base contract state and backfill event logs for indexers, DeFi analytics, and accounting. Access archive RPC through your Chainstack endpoint.

Included
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API de depuración y seguimiento

Inspect Base transaction execution with debug_traceTransaction and call traces. Diagnose reverted calls and understand smart contract behavior.

Included

Build and scale with reliable Base RPC

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Trade on Base

Read pool state, simulate swaps with eth_call, and submit signed transactions for trading bots, market makers, and DeFi strategies.

Choose Base trading infrastructure
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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
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Connect AI agents to Base

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

Explore Chainstack AI tools
10B+Daily API calls across Chainstack
10+Chainstack data centers worldwide
Acceso al servicio de asistencia 24 horas al día, 7 días a la semana
99,99 % o más de tiempo de actividad

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.

Dedicado Node

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

Node type
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Para equipos clasificados

¿Gastas más de 1000 dólares al mes en infraestructura de RPC?

Save over 50% on our elite pay as you go plan

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What Base developers say about Chainstack

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

Testimonio de un héroe - Logotipo de fondothe endpoint was ready quickly, performance has been consistent, and the team was helpful whenever we had questions about the integration.Fedrick J. · G2 (opens in a new tab)
Testimonio de un héroe - Logotipo de fondoThe Growth plan delivered exactly that. Fast, no gaps, no silent empty responses. The backfill completed cleanly.Xavier · Base archive backfill
Testimonio de un héroe - Logotipo de fondoI am pretty happy with the Chainstack experience so farAntoine · Base mainnet and testnet
Testimonio de un héroe - Logotipo de fondoAs for me, the price meets the service quality: low-latency and reliable RPC endpoints, fast support and clean UI for node performance monitoringVerified user · Base RPC · SourceForge (opens in a new tab)
Testimonio de un héroe - Logotipo de fondoMoving to Growth gave us the capacity and reliability headroom we needed as our project scales.Dale · Customer feedback

See how much faster Chainstack is

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 (opens in a new tab)

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 deployment wizard
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Supervisión, alertas y observabilidad

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Configuraciones de « node » con el tamaño adecuado

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Tus datos están siempre protegidos.

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 (opens in a new tab)
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Base RPC pricing

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

Planes económicos para todo tipo de cargas de trabajo

Starting from$40/moon annual
Explore paid plans
From 20M requests included monthlyComparar y convertir
  • Higher throughput and larger node allowances

All Developer features, plus:

  • Archive data Growth+
  • Add-ons Growth+
  • Dedicated Nodes Pro+
  • Single sign-on Pro+
  • Role-based access Business+
  • Unlimited users Business+
Ver todas las características

Add-ons and Dedicated Node infrastructure are billed separately.

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Preguntas frecuentes
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 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.

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 provides Base WebSocket endpoints for supported subscriptions, including new blocks and contract event logs. WebSocket access is included in the Developer plan. Use the WebSocket URL from your node’s Access and credentials section.

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, y eth_sendRawTransaction. Use the WebSocket endpoint with eth_subscribe for supported real-time subscriptions.

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.