Imperative Execution

IntelligentCross FIX Order Entry API

Order entry into the IntelligentCross ATS books (Midpoint, ASPEN Fee/Fee, ASPEN Maker/Taker, ASPEN Taker/Maker) is accepted only over FIX connections; the ATS currently supports FIX 4.2. Subscribers must be registered US broker-dealers in good standing with an SRO, and reach the matching engines through NY4 cross-connects or a network service provider with an NY4 presence. Book selection is affirmative via the FIX ExDestination[100] tag and defaults to ASPEN Fee/Fee. The FIX specification is provided to subscribers on request from ops@intelligentcross.com.

GitHub

Documentation

📖
Documentation
https://www.imperativex.com/faq
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/imperative-execution/refs/heads/main/authentication/imperative-execution-authentication.yml

Other Resources

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Conventions
https://raw.githubusercontent.com/api-evangelist/imperative-execution/refs/heads/main/conventions/imperative-execution-conventions.yml

API entry from apis.yml

apis.yml Raw ↑ 
name: IntelligentCross FIX Order Entry API
description: Order entry into the IntelligentCross ATS books (Midpoint, ASPEN Fee/Fee, ASPEN Maker/Taker,
  ASPEN Taker/Maker) is accepted only over FIX connections; the ATS currently supports FIX 4.2. Subscribers
  must be registered US broker-dealers in good standing with an SRO, and reach the matching engines through
  NY4 cross-connects or a network service provider with an NY4 presence. Book selection is affirmative
  via the FIX ExDestination[100] tag and defaults to ASPEN Fee/Fee. The FIX specification is provided
  to subscribers on request from ops@intelligentcross.com.
humanURL: https://www.imperativex.com/faq
baseURL: https://www.imperativex.com/contact
x-protocol: FIX 4.2
x-transport: FIX over TCP on private cross-connects at Equinix NY4 (Secaucus, NJ). There is no public
  HTTP endpoint - the baseURL points at the documented onboarding and specification-request surface.
x-access: subscriber-only (registered US broker-dealers)
tags:
- Trading
- Order Entry
- FIX Protocol
- Equities
- Alternative Trading System
properties:
- type: Documentation
  url: https://www.imperativex.com/faq
- type: Authentication
  url: authentication/imperative-execution-authentication.yml
- type: Conventions
  url: conventions/imperative-execution-conventions.yml