Rename task list

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

The annotations indicate readOnlyHint=false and destructiveHint=false, so the tool is known to be a non-destructive mutation. The description adds little beyond 'existing', which clarifies scope but does not disclose side effects or permissions. Given annotations cover the safety profile, a 3 is appropriate.

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?

The description is a single, short sentence that directly states the action and resource. It is front-loaded and wastes no words, earning a perfect score for conciseness.

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 rename operation, the description is adequate when combined with the thorough parameter descriptions and annotations. There is no output schema, but the tool is simple enough that missing return-value information is not critical. A small gap is the lack of explicit mention that the rename preserves the task list ID and tasks, but this is not essential.

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 100% with both parameters fully described. The 'list' parameter description includes case-insensitivity, default handling, and a pointer to list_tasklists, which is rich. Since the tool description itself adds no extra parameter meaning, the baseline 3 applies.

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 'Rename an existing task list' uses a specific verb (rename) and resource (task list), and the word 'existing' distinguishes it from creation. This clearly sets it apart from sibling tools like create_tasklist and delete_tasklist.

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?

Usage is implied by the description, but no explicit alternatives or exclusions are given. However, the parameter description for 'list' provides practical guidance: it mentions calling list_tasklists to see existing lists and how to handle the default list, which gives some usage context beyond the bare description.

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