Tool type cannot be changed after creation. If you include the type field in your request, it must match the existing tool type.

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Important

Tool updates propagate immediately to all agents using the tool.

MCP connector

You can update name and description. If you need to connect to a different server or change credentials, create a new MCP connector tool and update your agent's tool_ids.

Agent as tool

You can update name and description. The underlying sub-agent cannot be changed. To use a different sub-agent, create a new agent-as-tool for that sub-agent.