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

Annotations already declare readOnlyHint=true, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description usefully discloses the depth of the returned payload (notes, parent task), but says nothing about behavior when a taskId/listId is invalid or not found. Adds some value over annotations, hence a 3.

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 tight sentence with the core result front-loaded and no filler. Every phrase (one task, notes, parent task) carries 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?

There is no output schema, and the description partly compensates by naming the notable returned fields. However, with three required parameters and two of them undocumented, an agent lacks guidance on sourcing listId/taskId, leaving a real gap for a lookup tool.

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 coverage is only 33% (only mailbox is documented, pointing at list_authorized_mailboxes). Neither listId nor taskId is explained in the schema or the description, and the description does not compensate — it never says how to obtain a listId or taskId.

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 ('Full detail for one task') and adds the distinguishing scope that it returns notes and parent task, which separates it from list_google_tasks. It does not name a sibling explicitly, so it stops short of a 5.

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?

No when-to-use guidance and no mention of alternatives such as list_google_tasks (to find the task) or update/complete_google_task (for mutations). The agent must infer that this is the single-item read from the name alone.

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