Is your feature request related to a problem?
When developing and iterating on agents, we frequently need to tweak the prompt during the development cycle. Currently, there is no API available to update an existing agent’s configuration (such as the prompt). As a result, we are forced to create a new agent every time a change is needed, which generates a new agent ID each time. This creates unnecessary overhead and complicates agent management.

What solution would you like?
Expose an API that allows updating an existing agent's configuration, prompt, tools, etc.

What alternatives have you considered?
No

Do you have any additional context?
No