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

Annotations already declare this is a non-read-only, non-idempotent, non-destructive mutation, and the description usefully adds that the resulting knowledge is permanent and that species (Curious) modifies the yield. It does not disclose cost, cooldowns, caps, or whether teaching consumes another resource, which matters for a repeatable stat-gain action.

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?

Front-loads the use condition and the key mechanic in one compact block with no filler. Minor waste in restating the tool name as a standalone sentence and in an example call that adds little beyond the schema's all-optional parameters.

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, so return values need not be explained, and the key parameter is covered in-schema. What is missing for a repeatable, non-idempotent action is whether there is a per-session limit or resource cost, leaving the agent without enough to judge when to stop calling it.

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 both parameters are documented there, so the baseline would be 3. The description goes beyond the schema by clarifying that the optional topic is purely flavor with no mechanical effect, which is exactly the kind of meaning an agent needs before choosing a value.

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 verb+resource (teach your pet) and names the effect (knowledge up), which separates it from sibling care actions like pet_feed or pet_rest. It stops short of explicitly naming those alternatives, so the differentiation is implied by the stat affected rather than stated.

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 'WHEN:' prefix gives a use condition, and the parenthetical adds strategic context (knowledge never decays, Curious learns fastest) that helps decide whether to spend actions here. There is no when-not guidance, no mention of a competing action, and no prerequisite such as the pet being rested or fed.

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