# Advanced Message Processing System (AMPS) Command Reference

Version develop

Publication Date Oct 09, 2023

Introduction

- 1.Introduction

Commands to AMPS

- 2. logon
  - Description
  - Header Fields
  - Returns
- 3. Publishing to AMPS
  - delta_publish
  - publish
- 4. Querying and Subscribing
  - delta_subscribe
  - sow_and_delta_subscribe
  - sow_and_subscribe
  - subscribe
  - sow
  - unsubscribe
- 5. Removing Messages
  - sow_delete
- 6. Utility Commands
  - flush
  - heartbeat

Responses from AMPS

- 7. Content Messages
  - publish message
  - sow message
  - oof message
- 8. Ack Messages
  - ack message
- 9. Query Delimiters
  - group_begin message
  - group_end message

Protocol Formats

- 10. Protocol Reference
  - FIX/NVFIX protocol
  - XML Protocol
  - AMPS/JSON Protocol
  - Header Fields - Reference