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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds genuine value by enumerating what comes back (title, preview picture, editor link, print PDF link), but says nothing about behavior when the id is unknown, ownership permissions, or any rate limits.

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 compact sentence with no filler, and the key distinguishing word ('One of the member's designs') is front-loaded. It reads as a noun phrase rather than a full action statement, which slightly weakens the lead.

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 usefully enumerates the return contents, which is exactly the burden it must carry. It stops short of covering failure modes (missing/inaccessible design) for a lookup tool, leaving a small but real gap.

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% for the single designId parameter, so the schema already documents origin and requiredness. The description adds no syntax, format, or scoping detail beyond implying the design belongs to the member, which is the baseline 3 for schema-covered params.

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 makes clear this returns a single design belonging to the member (title, preview, editor link, print PDF link), which an agent can distinguish from list_my_designs by the singular scope. It never states an explicit retrieval verb, so the action is inferred from the title and schema rather than stated.

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 when-to-use guidance or alternatives are given in the description. The hint about where designId comes from (list_my_designs or create_packaging_design) lives in the schema's parameter description, not here, and related siblings like get_design_file or export_design are never contrasted.

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