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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, covering the safety profile. The description adds valuable behavioral context by listing the exact sections of the resume and mentioning a PDF URL, giving agents a concrete idea of the response content. It does not contradict annotations.

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?

The description is a single sentence that front-loads the key information (whose resume) and then enumerates the contents efficiently. Every word earns its place; no fluff or redundant phrasing.

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?

For a zero-parameter, read-only retrieval tool with no output schema, the description is complete. It enumerates the resume sections and includes a PDF URL, covering all likely agent needs. No additional context is required.

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 input schema is empty (0 parameters), so schema coverage is 100%. Per the baseline for 0 params, a score of 4 is appropriate. The description adds no parameter meaning because there are none to explain.

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 clearly states the resource (Ruben Marcus' full resume) and enumerates its contents (summary, work experience, skills, etc.). It distinguishes from sibling tools like book_intro and get_services by focusing solely on the resume. The verb 'get' and the named resource make the purpose unambiguous.

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 description provides clear context: use this tool to retrieve the resume. It doesn't explicitly mention alternatives or exclusions, but the sibling names imply that this is the only tool for resumes. No when-not-to-use guidance is given, but the purpose is so specific that confusion is unlikely.

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