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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds the returned payload contents (file, sha256, client config), which is genuinely useful given there is no output schema. It says nothing about authentication requirements, rate limits, or what happens when the install file is unavailable.

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 return payload followed by the parameter note; nothing is padded. The trailing enum list is mildly redundant with the schema but does let an agent pick a valid value without opening the schema.

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 single optional-parameter, read-only tool with a rich annotation set, the description covers the essentials — output contents and the optional selector. It falls short on the default behavior when 'client' is omitted and on any precondition for the install file existing, which an agent would need in edge cases.

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%, so the description must carry the load; it does state that 'client' is optional and enumerates the accepted values, though those values are already in the schema enum and the restatement is partly redundant. The critical semantic gap is what omitting 'client' actually does — return a generic install, no client config, or all configs — which is never explained.

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 names a specific verb ('Return') and the concrete payload: the local install file, its sha256, and client config. That is enough for an agent to know this is a retrieval tool for an install artifact. It doesn't reference any sibling, but the sibling list (list_checks, products, sample_findings) is unrelated enough that differentiation is not a real burden here.

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 statement of when to use this tool versus alternatives, no prerequisites (auth, repository state), and no when-not condition. The only implied guidance is that a client value can be supplied, which is parameter information rather than usage context. An agent gets no help deciding whether this call is appropriate.

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