Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Despite the presence of an output schema and full parameter documentation, the description lacks critical context about update semantics, scope, and alternatives. An agent cannot tell what distinguishes this tool from update_client, update_branding, or update_user, nor whether fields are overwritten wholesale.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.