> For the complete documentation index, see [llms.txt](https://docs.zaui.com/zapi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zaui.com/zapi/zapi-calls/agent-calls.md).

# Agent Calls

- [Agent Login](https://docs.zaui.com/zapi/zapi-calls/agent-calls/agent-login.md): This call will return the API token, API User ID and API Account ID, which can then be used on subsequent calls.
- [Authenticate Agent](https://docs.zaui.com/zapi/zapi-calls/agent-calls/authenticate-agent.md): Authenticates that the agent is part of the system
- [Get Agent Profile](https://docs.zaui.com/zapi/zapi-calls/agent-calls/get-agent-profile.md): Retrieve the profile of any agent by ID.
- [Update Agent Username](https://docs.zaui.com/zapi/zapi-calls/agent-calls/update-agent-username.md): Update the username of the agent.
- [Update Agent Password](https://docs.zaui.com/zapi/zapi-calls/agent-calls/update-agent-password.md): Update the password of the agent.