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

Annotations already declare readOnlyHint=true, openWorldHint=false and destructiveHint=false, so safety is fully covered and the description correctly implies a pure read. The extra value it contributes is the content of the response (KPIs, verdicts with evidence, check-in history) in the absence of an output schema. It still says nothing about cost, freshness, or scope of the data returned.

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?

One sentence, front-loaded with the usage cue and followed immediately by the three outputs, with no filler. Slightly improved by replacing "Use this to see" with a direct verb, but it earns every word.

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, so the description carries the burden of describing return values, and it does so by naming the three result blocks. Combined with annotations covering the safety profile and the schema covering the only parameter, an agent has enough to call it correctly; only data scope and freshness remain unstated.

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 single optional api_key is fully documented in the schema, including the Authorization: Bearer alternative. The description adds nothing about parameters, but with one optional auth parameter and complete schema coverage, the baseline of 3 is appropriate.

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?

"Use this to see your KPIs vs baseline, every item's verdict with evidence, and check-in history" names a concrete resource (the progress report) and enumerates the three things it returns, so an agent knows exactly what it gets. It is clear, but does not explicitly differentiate itself from near-siblings such as get_digest or share_report.

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?

"Use this to see your..." supplies an implied trigger (when you need KPI status, verdicts, or check-in history), which is enough to pick the tool in the common case. However, there are no exclusions and no named alternative, so the agent gets no help deciding between this and get_digest when a summary is also plausible.

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