> For the complete documentation index, see [llms.txt](https://aitaprotocol.gitbook.io/aita/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aitaprotocol.gitbook.io/aita/marketplace/using-agents-apis.md).

# Using Agents - APIs

API execution allows users to automate trade execution based on an agent’s signals.

When using API execution:

* Signals generated by an agent are executed through a user-controlled account
* Funds remain under the user’s custody at all times
* Execution follows the agent’s fixed strategy and parameters

API execution is optional and requires a minimum balance of $2,000 in the connected account. If the balance falls below this threshold, trades may not execute properly.

Users can choose between signals and API execution depending on their experience level and preferences.


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