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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is covered. The description contributes one genuinely useful behavioral fact beyond them — that the returned download is short-lived, meaning the link expires — but says nothing about expiry duration, auth requirements, or whether repeated calls yield new URLs.

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 sentence, front-loaded with the verb and the outcome, with no filler or redundancy. It is efficient, though its efficiency comes partly from being a verbatim copy of the title rather than a distilled explanation.

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?

Four required parameters, no output schema, and a description that never says what comes back (a URL string? an object with expiry?), how long 'short-lived' is, or what happens if the attachment is invalid. For a tool whose entire value is a time-limited download link, that is a significant omission.

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?

With only 50% schema description coverage, the description should compensate, but it adds meaning only for 'attachment' (it belongs to the case) and implicitly 'case'. It gives no clarification for 'company' or 'environment', whose semantics (especially which environment owns the resource) remain thin in both places.

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 sentence names a specific verb (get) and resource (a short-lived download for an attachment) and scopes it to a case, so the operation is identifiable. However, it is word-for-word the title, and it offers no differentiation from nearby tools such as summer_assets_get or summer_cases_get, leaving the agent to infer why this tool exists separately.

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?

There is no guidance on when to call this versus alternatives like summer_assets_get, nor any stated prerequisites (e.g., that the attachment must already belong to the given case). Usage is only implied by the phrase 'belongs to this case'.

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