# Introduction to Actions

Actions allow you to query an ACI server and instruct it to perform a variety of operations.

NOTE: All actions must be sent to the server Port. The configured authorization roles determine which users can send which actions to the port. See Authorization Roles Configuration Parameters.

The general syntax of these actions is:

    http://host:port/action=action&requiredParams&optionalParams

where,

`host` | is the IP address or name of the machine on which the ACI server is installed.
`port` | is the ACI port by which actions are sent to the ACI server (set by the `Port` parameter in the `[Server]` section of the configuration file).
`action` | is the name of the action you want to run.
`requiredParams` | are the parameters you must supply for the action you are requesting. (Not all actions have required parameters.)
`optionalParams` | are parameters you can supply for the action you are requesting. (Not all actions have optional parameters.)

Separate the individual parameters with an ampersand (&). Separate parameter names from values with an equals sign (=). You must percent-encode all parameter values.

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