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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the bar is lower. The description earns credit beyond them by disclosing the three-state result model — 'ready, processing or missing' — which tells an agent that a missing resume is a normal state rather than an error and that a processing state may require retry logic.

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 with zero padding. The return shape is front-loaded ahead of the usage advice, so an agent scanning for capability gets it immediately.

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?

An output schema exists and annotations cover safety, so the description need not re-document the response. What it does add — the tri-state status semantics and a concrete use case — is exactly the gap the structured fields leave open for a zero-parameter read.

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 rubric this lands at the baseline of 4. The description correctly implies a no-argument call by never referencing any input, and nothing is left ambiguous about what the caller must supply.

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 names a specific verb and resource ('Get the user's main resume') and enumerates what the caller receives: status, resume text, and profile details. It implicitly distinguishes itself from upload_my_resume and delete_my_resume via the read verb, but it never names those siblings, so an agent must infer the boundary rather than being told.

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?

It gives a concrete trigger for use: 'Use it to tailor advice or an application to the user's real experience.' That is a clear context, not just an implied one. It stops short of saying when not to call it (e.g., prefer get_my_profile for profile-only reads) or what to do when status is 'missing' — upload_my_resume is the obvious follow-up but is never mentioned.

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