Base Sepolia

Supported testnet. Sauce supports transactions on Ethereum, Base, Arc and Solana, and the testnets Arc Testnet, Base Sepolia, Ethereum Sepolia, Solana Devnet and Solana Testnet. On Base Sepolia a program compiles and simulates, and the sauce command and the MCP server build its transactions and send them. Base Sepolia is a test network: its coin and tokens have no value.

Fact	Value
Support	supported: transactions are built and sent
Slug (`--chain`)	`base-sepolia`
Chain id	84532
Kind	EVM
Network	testnet: its coin and tokens have no value
Name in a program	`BaseSepolia`
In TypeScript	`import { BaseSepolia } from "@eco-incorp/sauce"`: its tokens and protocol namespaces are properties of it
Native coin	ETH (Ether), 18 decimals
Sauce	the engine, Kitchen and Routers, at the same addresses on every EVM chain: Deployments
CCTP domain	6

In a program

Compiled with --chain base-sepolia, a program names Base Sepolia’s tokens and contracts with no import; the same file compiled for another chain resolves each name there, or fails where the chain does not have it.

function main() {
  // `USDC` is Base Sepolia's USDC: `0x036CbD53842c5426634e7929541eC2318f3dCF7e`.
  const held = USDC.balanceOf(pot);
  // `Token(address)` is any other ERC-20, and works for a symbol's address too.
  require(Token(USDC).balanceOf(pot) == held);
  // `Cctp.TokenMessenger` is Base Sepolia's tokenMessenger: `0x8FE6B999Dc680CcFDD5Bf7EB0974218be2542DAA`.
  require(Cctp.TokenMessenger != 0);
  // The same contract, qualified by the chain's name, from a program on any chain.
  require(BaseSepolia.Cctp.TokenMessenger == Cctp.TokenMessenger);
}

Tokens

Symbol	Address	Decimals
`USDC`	`0x036CbD53842c5426634e7929541eC2318f3dCF7e`	6

Protocols

Every protocol the registry records here, each contract with how a program names it: its namespace contract, or its ABI imported from ./protocols/<slug>/<Export>.json and bound to the address.

Protocol	Contract	Address	In a program
CCTP	tokenMessenger	`0x8FE6B999Dc680CcFDD5Bf7EB0974218be2542DAA`	`Cctp.TokenMessenger`
Circle Gateway	gatewayMinter	`0x0022222ABE238Cc2C7Bb1f21003F0a260052475B`	`CircleGateway.GatewayMinter`
Circle Gateway	gatewayWallet	`0x0077777d7EBA4688BDeF3E311b846F25870A19B9`	`CircleGateway.GatewayWallet`

Next steps

Chains: every other chain, with its support.
Names and registries: how a name in a program becomes an address on the chain it is compiled for.
Glossary: the words these pages use, in plain terms.

Start here

Integration guides

Language reference

SauceScript libraries

Runtime and security

Troubleshooting and production

Chains and protocols

@eco-incorp/sauce

@eco-incorp/sauce-compiler

In a program

Tokens

Protocols

Next steps

​In a program

​Tokens

​Protocols

​Next steps

In a program

Tokens

Protocols

Next steps