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

Annotations already declare read-only, non-destructive, closed-world, so the safety profile is covered. The description still adds real value by disclosing that download links are short-lived — an important behavioral trait an agent would otherwise not know. It stops short of describing ordering, pagination beyond 'limit', or how expiry surfaces.

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?

Three short sentences, front-loaded with the use trigger, then the capability, then the exclusion. No filler or repetition.

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 adequately conveys the return shape (list of assets with download links) and the optional filter. Minor gap: nothing about result ordering or what happens when no assets match, but nothing essential to correct invocation is missing.

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 both parameters are already documented with defaults and the type enum-ish list. The description only restates 'optionally filtered by type', adding no syntax or semantic detail beyond the schema, so the baseline 3 applies.

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 and resource ('Lists the brand's assets') plus a distinguishing behavioral detail (short-lived download links, optional type filter). It is immediately separable from get_asset (single file) and get_brand_context (identity).

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?

Gives concrete use triggers ('user asks for their logos, images, documents or other brand files, or you need a file's download link') and an explicit non-use case routing to get_brand_context for brand voice/identity. Both when and when-not are spelled out.

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