update_task_list

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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description does add one useful nuance: the tool only renames (overwrites the title) rather than performing a general field update, which clarifies the scope implied by the 'update_task_list' name.

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?

A single front-loaded sentence with zero filler, appropriately sized for a two-parameter mutation. It is arguably too terse to be maximally helpful, but nothing is wasted.

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?

For a simple two-parameter tool with no output schema, the description is minimally adequate. It omits the source of the task_list_id (partially covered by the schema), confirmation of return behavior, and any note that the change is idempotent.

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 50%: task_list_id is documented in the schema, while title is only named. The description's 'rename' wording implies title replaces the existing name, which adds marginal meaning, but no format or length guidance beyond the schema's min/maxLength.

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 ('rename') and resource ('Google task list'), so an agent can distinguish it from update_task, update_task_list's task-level siblings. It does not, however, explicitly differentiate itself from other list-level tools like create_task_list or delete_task_list.

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?

There is no guidance on when to use this tool versus alternatives, no prerequisites (e.g., needing an existing list ID), and no mention of what happens to the current title. The agent must infer all usage context.

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