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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds no behavioral context of its own (no auth needs, no rate limits, no failure modes), leaving it at a baseline that is only adequate because the annotations carry the burden.

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 no wasted words. It is efficient, though as a bare subordinate clause it never delivers an explicit action statement, which slightly weakens structure.

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 one-parameter read tool with an output schema, full annotation coverage, and a 100%-documented schema, the description is sufficient for correct invocation. Nothing an agent needs in order to call it is missing, though it leans entirely on structured fields.

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 a single documented parameter, so the schema already explains task_id fully. The phrase 'you have its id' merely restates the parameter rather than adding syntax, format, or edge-case detail; baseline 3 is appropriate when the schema does the work.

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 conveys a single-resource retrieval ('the details of one specific task') that is implicitly scoped to one record, which distinguishes it from the sibling tasks.list. However it states purpose only obliquely through a 'when you need' clause rather than a direct verb+resource, and never names the sibling it contrasts with.

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?

It gives a clear usage condition ('you need the details of one specific task') plus a precondition ('you have its id'), which is enough for the agent to select it over tasks.list. It stops short of naming the alternative explicitly or stating exclusions, so it falls below the top bar.

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