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

Annotations already declare idempotentHint=true and destructiveHint=true, but the description adds real behavioral boundaries the annotations cannot: it does not delete the suggestion, does not touch content cards already created from it, and publishes nothing. It also names the return shape, which matters since there is no output schema.

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 tight sentences; the primary action and the scope-routing negation are front-loaded with no filler.

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?

Given no output schema, the 'Returns { suggestion }' note is genuinely useful, and the non-destructive boundaries are complete. However, leaving both parameters undocumented leaves an agent guessing about brandId's role and the identifier format.

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 two parameters (brandId, suggestionId), and the description adds no meaning for either — no format, scoping, or whether brandId is required. With this coverage gap the description should compensate but does not.

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+resource ('Mark a brainstorm suggestion as dismissed') and its effect on the pending list. The sibling accept_brainstorm_suggestion and delete_content make the distinction easy to draw from the naming plus the explicit 'does NOT delete' clarification.

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?

The described effect ('so it leaves the pending list') plus the negations clearly frame when to use this over accept_brainstorm_suggestion or delete_content. It stops short of explicitly naming those alternatives, so the routing is inferable rather than stated.

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