Chain Reference — All Supported Networks

Auto supports seven blockchain networks: Ethereum, Base, Arbitrum, Optimism, Polygon, Solana, and HyperEVM. This reference covers chain IDs, supported features, swap providers, bridge routes, and chain-specific details for each network.

Which Chains Does Auto Support?

Chain	Chain ID	Gas Token	Swap	Bridge	Lending	Gas Sponsored
Ethereum	1	ETH	Yes	Yes	Aave, Morpho	Yes
Base	8453	ETH	Yes	Yes	Aave	Yes
Arbitrum	42161	ETH	Yes	Yes	Aave	Yes
Optimism	10	ETH	Yes	Yes	Aave	Yes
Polygon	137	POL	Yes	Yes	Aave	Yes
HyperEVM	999	HYPE	No	No	No	No
Solana	7565164	SOL	Yes	Yes	No	Yes

What Swap Providers Are Available on Each Chain?

Each chain uses different decentralized exchange aggregators for swap routing.

Chain	Available Swap Providers
Ethereum	0x, CoW Protocol, Relay
Base	0x, CoW Protocol, Relay
Arbitrum	0x, CoW Protocol, Relay
Optimism	0x, Relay
Polygon	0x, Relay (no CoW Protocol)
Solana	Jupiter

What Bridge Routes Does Auto Support?

Auto bridges between any pair of supported chains except HyperEVM. Bridge providers include Relay, Across, CoW Protocol, and 0x where supported.

Route Type	Supported
EVM to EVM	Yes (all combinations except HyperEVM)
EVM to Solana	Yes
Solana to EVM	Yes
Any to/from HyperEVM	No — use Hyperliquid deposit flow instead

Ethereum

Ethereum is the original EVM chain with the deepest DeFi protocol support. It has the highest gas fees but the broadest compatibility. Full lending is available through both Aave and Morpho. CoW Protocol limit orders are supported.

• Chain ID: 1

• Gas token: ETH

• Lending: Aave V3, Morpho (vaults and markets)

• Swap providers: 0x, CoW Protocol, Relay

• Limit orders: CoW Protocol

Base

Base is the lowest-cost chain for most operations and the recommended starting point for new users. Full swap, bridge, and lending support is available.

• Chain ID: 8453

• Gas token: ETH

• Lending: Aave V3

• Swap providers: 0x, CoW Protocol, Relay

• Limit orders: CoW Protocol

Arbitrum

Arbitrum provides fast execution and low fees. It is the gateway to Hyperliquid — deposit USDC from Arbitrum to fund your Hyperliquid account. Aave lending and CoW limit orders are supported.

• Chain ID: 42161

• Gas token: ETH

• Lending: Aave V3

• Swap providers: 0x, CoW Protocol, Relay

• Limit orders: CoW Protocol

Optimism

Optimism is a good bridge destination with Aave lending support. This differs from Ethereum, Base, and Arbitrum because CoW Protocol is not available — use 0x or Relay for swaps.

• Chain ID: 10

• Gas token: ETH

• Lending: Aave V3

• Swap providers: 0x, Relay

• Limit orders: Not available

Polygon

Polygon is the home of Polymarket — all prediction market trading happens on Polygon using USDC.

• Chain ID: 137

• Gas token: POL (formerly MATIC), not ETH

• Lending: Aave V3

• Swap providers: 0x, Relay (no CoW Protocol)

• Limit orders: Not available

• Important: POL is only native on Polygon, not on other chains. There is no native ETH on Polygon (ETH appears as WETH).

HyperEVM

HyperEVM is the EVM-compatible chain in the Hyperliquid ecosystem. This differs from all other supported chains because gas is not sponsored — you need HYPE tokens to pay for gas.

• Chain ID: 999

• Gas token: HYPE

• Lending: Not available

• Swap/Bridge: Not supported through Auto

• Access Hyperliquid trading: Deposit USDC through the Hyperliquid deposit flow (which routes through Arbitrum)

Solana

Solana uses Jupiter for swap routing and supports SPL token and native SOL transfers. Bridging to and from EVM chains is supported.

• Chain ID: 7565164

• Gas token: SOL

• Lending: Not available

• Swap provider: Jupiter

• Limit orders: Jupiter Trigger

• Important: Auto maintains a 0.01 SOL buffer for transaction fees. Token addresses use Solana's mint format, not EVM addresses.

What Chain Name Shortcuts Does Auto Understand?

Auto recognizes these aliases when you name a chain in natural language.

What You Say	Which Chain
eth, mainnet	Ethereum
base	Base
arb	Arbitrum
op	Optimism
poly, matic	Polygon
sol, solana	Solana