Supported networks

Supported networks

This page lists the network identifiers accepted by the Token Custody API.

Base URL

All API endpoints are relative to:

https://api.testmachine.ai

Network identifiers

Networks are represented by an EVM chain ID.

In API responses, this appears as network_id.

Currently supported

• Ethereum Mainnet — chain id 1

• Base Mainnet — chain id 8453

• BNB Mainnet — chain id 56

If you are looking for specific chain support that is not listed, we can accommodate most EVM requests

Address format

For EVM networks, token contract addresses must be provided as a hex 0x address.

• Lowercase addresses are accepted.

• Checksummed addresses are recommended for human review.

Providing an EOA (wallet) address instead of a contract address will typically return an error or an empty analysis.