Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare destructiveHint=true and idempotentHint=false, so the safety profile is covered. The description adds real value beyond that by disclosing the post-condition (previous owner is demoted to manager) and the eligibility prerequisite on the target user, which the annotations do not convey. It still omits that this is irreversible and ignores the expectedAclVersion concurrency guard.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two short sentences, no filler, with the eligibility constraint and outcome both stated up front. Nothing could be trimmed without losing information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be described, and annotations cover the destructiveness signal. The definition is adequate for calling the tool correctly, with the one gap being the unexplained expectedAclVersion parameter on a mutation that requires all four arguments.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is only 25% — only idempotencyKey is documented in the schema. The description partially compensates by constraining userId to a verified workspace member with direct access, but expectedAclVersion (presented as the optimistic-lock guard for this mutation) and sheetId receive no explanation anywhere.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource (transfer ownership) and names the target constraint (verified workspace member with direct access) plus the resulting state change (previous owner becomes manager). It is distinguishable from the nearby sheets_update_user_access and sheets_remove_user_access by verb, though it never names those siblings explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The precondition 'verified workspace member with direct access' implicitly tells the agent when this call is valid, but there is no explicit when-to-use versus when-not, and no routing to alternatives like sheets_update_user_access or sheets_share_with_email for adding or adjusting access.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.