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

With no annotations, the description carries the full burden. '(Evolution algorithm; public method.)' is cryptic and discloses nothing operationally useful — not whether the call is read-only, whether it needs a profile, or what happens when both qy and goal are omitted.

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?

Very short and front-loaded with the user-facing question, so the scenario lands first. The trailing parenthetical is terse to the point of being opaque, but it costs little space.

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 2-optional-parameter tool with no annotations and no output schema, the description says what it returns in the abstract ('a recommendation') but not its form. Still, the concept is simple enough that an agent can call it correctly, which keeps this at minimum-viable rather than inadequate.

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 already 100%, so baseline is 3, but the description goes further by mapping the two modes: 'your weak points' implies the qy profile parameter while 'a role/goal' maps directly to the goal parameter. That mode mapping adds real meaning beyond the schema text.

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 action and resource: 'Get a recommendation' of what skill to build, sourced from either weak points or a role/goal. That is clearer than most siblings, but it never names or contrasts itself with assess_skill or get_rubric, so an agent still has to infer the boundary.

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?

'Not sure what to build next?' implies the situation (no clear next step) and the two input modes hint at different entry points, but there is no explicit when-not guidance and no alternative tool named as a routing target.

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