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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description adds a genuine semantic caveat — 'Counts do not verify reader identity' — which tells the agent how to interpret the numbers. It does not disclose pagination/bounding behavior or any auth constraints, so it is modest rather than rich.

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 short sentences, front-loaded with the primary purpose and followed by the caveat; no filler. Slightly terse relative to the gaps it leaves, but nothing is wasted.

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?

With no output schema, the description should characterize the return shape; it does so at a high level ('view totals and a bounded set of per-link counts'), which is adequate. However it omits pagination semantics and any signal about what document_id must be, leaving gaps for a 3-parameter analytics tool.

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 0% for all three parameters, so the description must carry the load. It hints at boundedness ('bounded set') which loosely maps to limit/offset, but never explains the limit cap of 20, offset defaults, or the required document_id pattern constraint.

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?

States a specific verb ('Get') plus the resource it returns ('view totals and a bounded set of per-link counts'), which disambiguates it from siblings like shareout_list_links or shareout_get_document. It does not explicitly name a sibling it should be preferred over, so it stops short of a 5.

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?

No guidance on when to call this instead of alternatives such as shareout_list_links or shareout_get_document, and no prerequisites stated. The agent must infer usage from the resource description alone.

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