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

Annotations already declare readOnlyHint, idempotentHint, and openWorldHint=false, so the safety profile is covered. The description adds two things annotations cannot convey: the exact shape of returned data and that the call is free of charge, which is genuinely useful for an agent deciding whether to call it speculatively. It stops short of stating whether results are paginated or scoped to a workspace.

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 telegraphic sentence that front-loads the resource and its fields, with the cost note last. Nothing is wasted, though the fragment style ('Free.') is terse to the point of reading like a pricing tag rather than guidance.

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-required-parameter, read-only list tool with full schema coverage and rich annotations, the description covers what is returned and the cost. The remaining gap is disambiguation from hiring_assessment_results, which matters because both concern assessments.

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 already documents the single 'full' flag at 100% coverage, including the answer-key behavior, so the schema carries the parameter explanation. The description mentions 'questions' among returned fields but never connects it to the full=true mode, adding no meaning beyond the schema.

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 states the resource precisely and enumerates what it exposes: title, questions, time limit, sent/completed counts, making it clear this is a read of the account's assessment catalog. It does not distinguish itself from the closest sibling, hiring_assessment_results, which an agent could easily confuse with this tool.

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?

Usage is only implied: 'This account's tests' suggests inspecting the catalog, and 'Free.' signals it is costless to call. There is no explicit when-to-use statement and no mention of hiring_assessment_results or hiring_send_assessment as alternatives, so the routing decision is left to inference.

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