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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description's main added value is disclosing the returned fields (date, role, overall level, competency levels), but it says nothing about ordering, volume, or behavior when no history exists — modest beyond-annotation content.

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 well-formed sentence: resource first, token provenance second, returned content and use case last. No filler or repetition.

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 a single parameter, full schema coverage, and no output schema, the description carries the return-shape burden and does list the key fields. Minor gaps remain around result structure (list vs. single record) and volume, so not quite complete.

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 coverage is 100% and the schema itself already states the token comes from ruforge_profile_check/confirm, is valid 7 days, and must not be shown to the user. The description's token-source note therefore largely duplicates structured data, so the baseline 3 applies.

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?

Names a specific resource (profile completion history) and enumerates what it contains — date, role, overall level, per-competency levels — which separates it from the assessment tools (profile_check/confirm) that produce the token. It stops short of explicitly contrasting itself with a named sibling, which keeps it at 4 rather than 5.

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?

Gives a clear context of use: comparing dynamics over time and picking a competency to deepen, which is exactly the alternative to the point-in-time profile_check. It also names where the token comes from, but offers no explicit 'do not use when' or exclusion.

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