Skip to main content
Use these references when you know which interface your application needs. Start with the SDKs & APIs overview to compare every surface, or jump directly to accounts, AI agents, local development, or chain RPC methods.

​
Choose an Integration Surface

SDKs & APIs Overview

Compare the wallet and payments SDK, Base MCP, the Base Chain API, and command-line tooling.

Wallet and Payments SDK

Add universal sign-in, passkey-backed accounts, and one-tap USDC payments to your app.

Base MCP

Give AI assistants access to wallet actions, swaps, signatures, and x402 payments.

base-anvil CLI

Build and test Base-native contracts locally with Base’s Foundry toolchain.

​
Call the Chain

Base RPC Overview

Choose between standard block data and 200 ms Flashblock preconfirmations.

Ethereum JSON-RPC

Read chain state, estimate gas, send transactions, query logs, and subscribe to events.

Flashblocks API

Use preconfirmation-aware methods and streams for sub-second application feedback.

Debug API

Trace transactions and replay blocks when debugging contract execution.

Base Services Hub

Find RPC, data, security, and other service providers that support Base builders.