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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds real behavioral value beyond that: it discloses that each item carries a Studio link and that example resumes also carry a preview image, telling the agent this is a discovery/navigation result rather than a payload.

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 sentences, zero filler, with the usage trigger front-loaded before the output description. The phrase "each with a link that opens Studio" is repeated twice, a minor redundancy that keeps it just short of ideal.

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 parameters and no output schema, the description carries the burden of explaining what comes back, and it does: two result groups (designs, example resumes) and the fields on each (Studio link, preview image). Nothing an agent needs to call or interpret this tool 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?

The tool takes zero parameters, so per the baseline the schema carries no semantics for the description to compensate for. The description correctly adds nothing about inputs and stays focused on output content.

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 ("List ATSPrep's resume designs" plus example resumes by role) and enumerates what each entry contains. No sibling tool lists templates, so an agent can distinguish this from open_in_studio or tailor_resume without opening a schema.

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?

"Use this when the user asks for resume templates, designs or example resumes for a role" gives an explicit triggering intent, which is unusually clear. It does not name a sibling as an alternative or add exclusions, but no sibling is close enough to require routing guidance.

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