ACI API 26.3
ACI API Programming Guide

# C ACI Objects

The fundamental construct in the C Knowledge Discovery SDK is the ACI object. ACI objects have the following types:

- `Connection` objects allow you to represent details of the ACI server.

- `Command` objects allow you to set details of the requests made to the server; for example, the server action and the parameters that it requires.

- `Data` objects allow you to access the HTML or XML reply to a server request as a plain text buffer (for later parsing or outputting to a browser, for example) or to parse and map XML replies to a linked list of ACI objects. The API provides functions for user-friendly accessing and manipulating the ACI object linked list.

## ACI Object Structure

Each ACI object contains:

- a value indicating its type (`Connection`, `Command` or `Data`)

- a collection of key-value pairs used to store parameters and their values

- a link to a child ACI object

- a link to the next ACI object in the linked list (sibling object)

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Version 26.3 | Last updated July 2026

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Product: Knowledge Discovery ACI API 26.3

Topic Title: C ACI Objects