Sei EVM Chain ID (1329) & RPC URL: Add Sei EVM to MetaMask

Q: "What is the Sei EVM chain ID?"

"The Sei EVM chain ID is 1329, or 0x531 in hexadecimal. Wallets use it to make sure a transaction is signed for Sei EVM and not another network."

Q: "What is the Sei EVM RPC URL?"

"A working public RPC URL is https://evm-rpc.sei-apis.com. We tested it on October 27, 2026: it returned chain ID 1329. Other working endpoints are listed in the table on this page."

Q: "How do I add Sei EVM to MetaMask?"

"Click \"Add Sei EVM to MetaMask\" on this page and approve the request in MetaMask. To add it manually, go to Networks, then Add a custom network, and enter the network name, RPC URL https://evm-rpc.sei-apis.com, chain ID 1329, currency symbol SEI and the explorer URL."

Q: "What token do I need for gas on Sei EVM?"

"Gas on Sei EVM is paid in SEI. Keep a small amount in your wallet, otherwise you cannot send or swap the tokens you hold there."

Q: "What is the Sei EVM testnet chain ID?"

"The Sei Testnet testnet uses chain ID 1328 (0x530) and the RPC URL https://evm-rpc-testnet.sei-apis.com. Testnet tokens have no value."

Network settings for Sei EVM: chain ID 1329, a working RPC URL and the explorer. Add it to MetaMask in one click, or copy the fields below.

Chain ID1329
Hex0x531
Gas tokenSEI
RPC checkedOctober 27

By Step Exchange Research · Updated October 27, 2026

The Sei EVM chain ID is 1329 (0x531 in hex). Sei is a Layer 1 with an EVM execution layer. Gas is paid in SEI. Below are the exact settings MetaMask asks for, public RPC endpoints we tested on October 27, 2026, and a one-click button to add the network.

Sei EVM Network Details for MetaMask

Field	Value
Network name	Sei
RPC URL	`https://evm-rpc.sei-apis.com`
Chain ID	1329
Currency symbol	SEI
Block explorer	https://seiscan.io

Copy these values exactly. If the RPC URL returns a different chain ID than the one you enter, MetaMask stops with a chain ID mismatch warning: that usually means a typo or an RPC for another network.

Sei EVM RPC URLs (Tested October 27, 2026)

RPC endpoint	Returned chain ID	Response time
`https://evm-rpc.sei-apis.com`	1329	274 ms

We sent eth_chainId and eth_blockNumber to each endpoint from Europe on October 27, 2026; the table lists only endpoints that answered with chain ID 1329. The latest block was 239,995,032. Public endpoints are free and rate limited: for an app or a bot, use a paid provider or your own node.

How to Add Sei EVM to MetaMask

Click Add Sei EVM to MetaMask above, or open MetaMask and go to Networks → Add a custom network.
Enter the network name Sei, RPC URL https://evm-rpc.sei-apis.com and chain ID 1329.
Set the currency symbol to SEI and the block explorer to https://seiscan.io.
Save and switch to the new network. Your 0x address is the same as on other EVM networks.

Tip: Some Sei wallets also show a sei1… address. MetaMask and other EVM wallets use the 0x address, so give that one when you receive tokens on Sei EVM.

Sei Testnet Testnet

Field	Value
Network name	Sei Testnet
RPC URL	`https://evm-rpc-testnet.sei-apis.com`
Chain ID	1328 (0x530)
Currency symbol	SEI
Block explorer	https://testnet.seiscan.io

Testnet tokens come from faucets and are worth nothing. Do not send real SEI to a wallet connected to Sei Testnet.

How to Get SEI on Sei EVM

The widget at the top of this page is set to swap into SEI on Sei EVM: pick the token you have on another network, enter your address and sign once. Routes, fees and timing are covered in our Sei EVM bridge guide.

What is a chain ID? - how chain IDs protect transactions
How to add a network to MetaMask - the manual steps in detail
Gas tokens by chain - what each network charges fees in
All networks: chain ID list

FAQ

What is the Sei EVM chain ID?

The Sei EVM chain ID is 1329, or 0x531 in hexadecimal. Wallets use it to make sure a transaction is signed for Sei EVM and not another network.

What is the Sei EVM RPC URL?

A working public RPC URL is https://evm-rpc.sei-apis.com. We tested it on October 27, 2026: it returned chain ID 1329. Other working endpoints are listed in the table on this page.

How do I add Sei EVM to MetaMask?

Click "Add Sei EVM to MetaMask" on this page and approve the request in MetaMask. To add it manually, go to Networks, then Add a custom network, and enter the network name, RPC URL https://evm-rpc.sei-apis.com, chain ID 1329, currency symbol SEI and the explorer URL.

What token do I need for gas on Sei EVM?

Gas on Sei EVM is paid in SEI. Keep a small amount in your wallet, otherwise you cannot send or swap the tokens you hold there.

What is the Sei EVM testnet chain ID?

The Sei Testnet testnet uses chain ID 1328 (0x530) and the RPC URL https://evm-rpc-testnet.sei-apis.com. Testnet tokens have no value.