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

Annotations already declare destructiveHint=true, so the description does not need to establish mutability. It adds real value beyond the annotations by disclosing the confirmation flow ('May return needs_confirmation'), which is a behavior an agent must handle. It does not, however, explain what 'destructive' means here or that the change is reversible, leaving some behavioral context thin against a destructive annotation.

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 tight sentences with the scope constraint front-loaded and the sibling routing in the second. No filler, every clause earns its place.

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 low-complexity update tool with full schema coverage and no output schema, the description supplies the key non-obvious behaviors: gallery-label-only scope and the needs_confirmation response. Minor gaps remain (reversibility, what triggers confirmation), but it is sufficient for correct invocation.

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% and the schema documents all four parameters, including workspace auth nuances and approvalId semantics. The description adds no parameter-level detail beyond what the schema already provides, so the baseline of 3 is correct.

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 states a specific verb and resource ('Changes a task's name') and immediately scopes it to 'the gallery label only'. It further distinguishes from siblings by naming workbench_tasks_compile and workbench_tasks_freeze as the tools that change the sentence and plan, so the agent can tell exactly what this tool does and does not do.

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?

Explicitly routes the agent away from this tool for sentence/plan edits ('change through workbench_tasks_compile + workbench_tasks_freeze, never here') and flags the 'needs_confirmation' flow. When and when-not are both covered without inference.

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