Supported blockchains

IBEx targets EVM networks for Safe smart-account flows. Use the chain identifiers below when configuring API requests.

Chain reference

Chain	Mainnet ID	Testnet ID	Status
Ethereum	1	11155111 (Sepolia)	Supported
Arbitrum	42161	421614 (Sepolia)	Supported
Base	8453	84532 (Sepolia)	Supported
Polygon	137	80002 (Amoy)	Supported
Gnosis	100	10200 (Chiado)	Supported
BNB Chain	56	97	Work in progress
Solana	900	901	Work in progress

X-Blockchain-Id header

Most IBEx API calls that touch on-chain state or wallet deployment must target a specific network. Send the numeric chain ID in the X-Blockchain-Id HTTP header so the backend routes the request to the correct chain and RPC configuration.

Example:

GET /v1/example HTTP/1.1
Host: api.example.com
Authorization: Bearer <token>
X-Blockchain-Id: 11155111

Replace the value with the mainnet or testnet ID from the table above. For work-in-progress chains, confirm availability in your environment before relying on this header.

Further reading

• Per-chain notes: use the links in the table.
• Wallet models: Wallets overview.