Rename a task list

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

Annotations already signal mutation and idempotency, so the description creditably adds the PATCH method, the exact scope of change, and the return behavior. The destructiveHint is not contradicted because renaming overwrites the previous title; the description merely clarifies that tasks are unaffected.

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 sentences cover the action, HTTP method, scope limitation, side-effect guarantees, and return value with no filler. The most important information is front-loaded.

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 rename operation with rich schema descriptions and annotations, the description covers the operation, its non-effects, and the response. Nothing essential for an agent to invoke it correctly is missing.

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 100%, so the schema already documents both tasklist_id and title in detail. The description does not add parameter-specific semantics beyond reinforcing that title is the only changeable field, which is a neutral contribution.

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?

The description opens with the specific verb 'Renames' and a clear resource, 'a task list,' and reinforces scope by noting the API only allows changing the title. It distinguishes itself from sibling task-related tools by stating that tasks, order, and completion state are untouched.

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 description clearly states that the tool's only effect is renaming the list and that task content, order, and completion state are not altered, which gives a strong sense of when to use it. It does not explicitly name alternatives like update_task, but the exclusion of task-level changes provides practical routing guidance.

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