Base is Coinbase's Ethereum Layer 2 network built on the OP Stack and part of the Optimism Superchain. It exposes a standard Ethereum JSON-RPC interface for smart contracts and dApps, plus higher-level developer surfaces including Base Account (Smart Wallet, Sub Accounts, passkeys, paymaster-sponsored transactions), OnchainKit React components, Mini Apps, the canonical Bridge to Ethereum, and a Solana cross- chain bridge. Block exploration is available through BaseScan and Blockscout.
APIs.json: https://raw.githubusercontent.com/api-evangelist/base-l2/refs/heads/main/apis.yml
- Layer 2
- Ethereum
- OP Stack
- Superchain
- JSON-RPC
- Smart Wallet
- Bridge
- Created: 2026-05-23
- Modified: 2026-05-23
Standard Ethereum JSON-RPC endpoint for Base Mainnet (chain ID 8453). Supports eth_, net_, web3_*, and Optimism-specific extensions for fee estimation and L1 messaging. The public endpoint is rate-limited and not recommended for production; teams typically front it with Alchemy, QuickNode, Infura, Coinbase Developer Platform, or self-hosted op-geth + op-node.
- Human URL: https://docs.base.org/chain/network-information
- Base URL:
https://mainnet.base.org
- JSON-RPC
- Mainnet
- EVM
Public JSON-RPC endpoint for the Base Sepolia testnet (chain ID 84532) used for development, contract deployment, and integration testing.
- Human URL: https://docs.base.org/chain/network-information
- Base URL:
https://sepolia.base.org
- JSON-RPC
- Testnet
- Sepolia
Pre-confirmation JSON-RPC endpoint exposing Flashblocks — sub-block streams of ordered transactions that allow apps to react to pending state with sub-second latency.
- Human URL: https://docs.base.org/chain/flashblocks
- Base URL:
https://mainnet-preconf.base.org
- Flashblocks
- Pre-Confirmation
- JSON-RPC
Canonical cross-chain bridge between Ethereum L1 and Base L2 for depositing and withdrawing ETH and ERC-20 tokens, secured by the OP Stack bridge contracts.
- Human URL: https://bridge.base.org
- Base URL:
https://bridge.base.org
- Bridge
- L1
- L2
- Canonical
Cross-chain bridge enabling asset transfers between Base and Solana, integrated into the Base ecosystem app surface.
- Human URL: https://docs.base.org/chain/base-solana-bridge
- Base URL:
https://docs.base.org/chain/base-solana-bridge
- Bridge
- Solana
- Cross-Chain
Base Account (formerly Coinbase Smart Wallet) is an ERC-4337 smart contract wallet with passkey sign-in, sub-accounts, session keys, sponsored transactions via paymaster, and SDK + React component integrations.
- Human URL: https://docs.base.org/base-account
- Base URL:
https://docs.base.org/base-account
- Smart Wallet
- Account Abstraction
- ERC-4337
- Passkeys
- Documentation
- Website
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
React component library and TypeScript SDK (@coinbase/onchainkit) for building onchain apps on Base — wallet, identity, transaction, swap, checkout, fund, and NFT components with built-in Smart Wallet and Mini App support.
- Human URL: https://docs.base.org/onchainkit
- Base URL:
https://www.npmjs.com/package/@coinbase/onchainkit
- SDK
- React
- Components
- Onchain
- Documentation
- Repository
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Etherscan-family block explorer for Base Mainnet and Sepolia with a public contract / transaction / address API.
- Human URL: https://basescan.org
- Base URL:
https://api.basescan.org/api
- Block Explorer
- API
- BaseScan
- Documentation
- Website
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Blockscout-powered open-source block explorer for Base with REST and GraphQL APIs.
- Human URL: https://base.blockscout.com
- Base URL:
https://base.blockscout.com/api
- Block Explorer
- Blockscout
- API
- Website
- Documentation
- Git Hub
- GitHub Organization
- Status
- Bridge
- Ecosystem
- Discord
- Blog
- L L Ms Txt
FN: Kin Lane Email: kin@apievangelist.com