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

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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.

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