Ethfinex Trustless
Accessing the Ethfinex trustless portal is as easy as accessing any other website on the internet.
Simply visit the link at trustless.ethfinex.com
API Trading
If you are looking to access the portal via API, please visit the documentation at www.ethfinex.com/api_docs.
You can also find the open source javascript API client library at github.com/ethfinex/efx-api-node.