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About Seed CX

Seed CX is an institutional exchange platform for digital assets. We maintain various regulated trading venues to give traders access to the widest range of tradable products, connecting liquidity pools on a secure platform with deep institutional liquidity.

Purpose of Documentation

The purpose of this API documentation is to provide participants detailed information into the various connectivity options offered by Seed CX.

Seed CX APIs

Connectivity Options

As our website describes, there are a number of ways to connect to Seed CX to trade and obtain data. This document outlines these methods.


Order Entry

Market Data

Zero Hash Settlement Service

Seed CX’s settlement agent is Zero Hash. Please refer to the Zero Hash API website for information on its API. Further information can be found here.

Seed CX Recommendation
Infrastructure Goal
Order Entry
Market Data
Cloud Quickest setup for low frequency order submission, or for quick testing
Note: REST market data is not advised for any sustained trading as frequent polling will be blocked
Cloud Algorithmic trading
Cloud Fast trading, single API format
Physical Fastest trading path
Cross Connect

Key Connectivity Information


Market participants can trade through FIX API, Web API or our fully customizable front-end, which supports order submission, block trading, charting and trade auditing. Market data distribution is available via FIX, REST and a websocket. Direct connection is available at NY4 & CH2.

Contact Information

Getting Connected

Contact Seed CX Operations to configure a cross-connect or to establish VPN connectivity to the Seed CX network.

Use reference data for a given environment to obtain the list of available instruments and details on their corresponding multicast channels. In addition, reference data contains endpoints for obtaining full market snapshots and specifies the number of decimal places in the implied price.


Seed CX provides market data for two distinct environments: Production and Certification.


The Production environment exists for live trading and order execution. It is recommended that applications conduct trial runs in the certification environment before executing live trades and consuming live market data.


The Seed CX Production environment is hosted in the Equinix NY4 data center located in Secaucus, NJ.


Seed CX’s production trading hours are 6:00 PM to 4:00 PM Central Time Sunday-Friday. The market becomes available at 5:55 PM Central Time Sunday-Friday. All outstanding orders will be canceled at the end of the trading day. New orders submitted after the end of the trading day will get rejected.

Production Connectivity


Seed CX has a Certification Environment which offers full exchange functionality using test funds. All funds are for testing purposes only.

The certification environment is available for applications to prove out and certify their readiness to work with Seed CX systems. This includes mock trading via web and FIX protocols.

New instruments and features are first previewed in the certification environment before being released to the production environment.


The Seed CX certification environment also hosted in the Equinix NY4 data center located in Secaucus, NJ.


Exchange is open 22 hours a day from 4:00 PM CST to 6:00 PM CST.

Certification Connectivity