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

No annotations exist, so the description carries the full behavioral burden and does not meet it. It never confirms read-only semantics, does not describe pagination, result volume, ordering, permissions, or the failure-path behavior implied by the notification_message parameter.

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 short sentence, front-loaded with the action and resource. The parenthetical filter note is mildly redundant with the schema but costs little.

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 annotations, no output schema, and no sibling differentiation, the description should do more. An agent still cannot tell what scope of assets is returned, whether results are paged, or why a listing tool takes a notification_message fallback parameter.

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%, so the schema already explains both parameters, and the baseline is 3. The description echoes the asset_type filter without adding syntax or accepted values, and says nothing about notification_message.

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 states a specific verb and resource ("List project media assets in the library"), which is more than a tautology. However, it never clarifies which project is being listed (there is no project identifier parameter, yet the effect is project-scoped) and gives no differentiation from adjacent siblings such as get_project_asset or list_project_drive.

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 only guidance is "optional asset_type filter," which merely restates the schema. There is no statement of when to use this versus get_project_asset (single asset) or list_project_drive (drive files), and no prerequisites or exclusions.

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