Create Custom Agents
Custom agents can be created only via the UI. Visit you.com/agents and create a new custom agent with your personalized parameters:

Choose whether to enable the tools or not:

WARNING: The Custom Agent API currently does not support custom agents that use a foundational model with advanced research and reasoning enabled.
NOTE: You can manage the tools only in the UI by enabling or disabling them. They can not be managed via the API.
See Research Tool and Compute Tool to learn more about tools.
When you create new agents, the platform automatically populates the Agents section with all of the agents you’ve created. This is where you can retrieve each agent’s ID:

Paste the ID in the agent parameter to call it via API.