Supported networks

Your endpoint is https://gateway.0xrelayguard.com/rpc/<slug> — use the exact slug from the table below (lowercase). The Chain ID is the EVM chain ID your tooling expects (e.g. for eth_chainId or a wallet network config).

# e.g. Base
https://gateway.0xrelayguard.com/rpc/base

# e.g. Arbitrum Sepolia (testnet)
https://gateway.0xrelayguard.com/rpc/arbitrum-sepolia

Mainnets

Slug (use in the URL)	Network	Chain ID
`ethereum`	Ethereum	1
`base`	Base	8453
`arbitrum`	Arbitrum One	42161
`optimism`	Optimism	10
`polygon`	Polygon	137
`bsc`	BNB Smart Chain	56
`avalanche`	Avalanche C-Chain	43114
`gnosis`	Gnosis	100
`linea`	Linea	59144
`scroll`	Scroll	534352
`zksync`	zkSync Era	324
`blast`	Blast	81457
`mantle`	Mantle	5000
`mode`	Mode	34443
`plasma`	Plasma	9745
`monad`	Monad	143
`eni`	ENI	173
`cronos`	Cronos	25
`ink`	Ink	57073
`movement`	Movement	3073
`megaeth`	MegaETH	4326
`katana`	Katana	747474
`rootstock`	Rootstock	30
`berachain`	Berachain	80094

Testnets

For trialling a gateway before routing mainnet traffic. Testnets don't count against your plan's network limit — add as many as you like.

Slug (use in the URL)	Network	Chain ID
`ethereum-sepolia`	Ethereum Sepolia	11155111
`ethereum-holesky`	Ethereum Holesky	17000
`base-sepolia`	Base Sepolia	84532
`arbitrum-sepolia`	Arbitrum Sepolia	421614
`optimism-sepolia`	Optimism Sepolia	11155420
`polygon-amoy`	Polygon Amoy	80002

Notes

The Free plan includes up to 5 mainnet networks; paid plans are unlimited. Testnets are always free.
The dashboard's "Add network" picker shows this same list — pick there and the slug is set for you.
Need a network that isn't listed? Let us know — adding an EVM chain is straightforward.

Next: wire the endpoint into your stack — see Integrate.