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

No annotations are present, so the description carries the full burden and does little: it says 'update' but not whether this is a partial patch (only listed fields changed, others preserved), whether it requires ownership/permissions, what happens on an invalid asset_id, or whether the change is reversible. For a mutation tool with zero annotation coverage this is a substantial gap.

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 front-loaded sentence with no filler, which is appropriate in form. It is efficient but borders on underspecified rather than over-long, so it sits just below the top mark.

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, low schema coverage, and five parameters, the definition should explain mutation semantics, field-omission behavior, and error/shape of the result. None of these are addressed, leaving the agent under-informed for a write operation.

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 only 20%, and the description does helpfully name three of the five parameters (caption, prompt, guidelines), which partially compensates. However it says nothing about patch semantics for the patch_* parameters, does not clarify the required asset_id, and adds nothing about notification_message beyond what the schema already documents.

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?

Specific verb (Update) plus resource (project asset) and an enumeration of the mutable fields (caption, prompt, guidelines). An agent can tell it apart from delete_project_asset or get_project_asset, though it doesn't explicitly contrast with the other update_* siblings such as update_calendar_row.

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?

No statement of when to use this tool versus alternatives (e.g. update_calendar_row, regenerate_calendar_row_asset), no prerequisites, and no indication that the asset must already exist. The agent must infer all routing decisions from the name alone.

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