Choose an Integration Surface
SDKs & APIs Overview
Compare the Base Chain API, identity verification, and command-line tooling.
Migrated and Deprecated Products
Find where retired, moved, and renamed products went, including OnchainKit, mini apps, and Wallet MCP.
Foundry for Base
Build and test Base-native contracts locally with Foundry v1.8.4 or later.
Call the Chain
Base RPC Overview
Endpoints, methods, and block parameters for Base’s 200ms canonical blocks.
Ethereum JSON-RPC
Read chain state, estimate gas, send transactions, query logs, and subscribe to events.
Debug API
Trace transactions and replay blocks when debugging contract execution.
Builder Stack
Find RPC, data, security, and other service providers that support Base builders.