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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is covered. The description adds real substance beyond that: it discloses the shape of the output (five pieces with notes, a three-colour palette, a rationale, and an adjust link) and a behavioural constraint on sourcing ('clothes people usually already own').

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, both doing work: the first states what is built and from what inputs, the second states what comes back. It is front-loaded on the action and contains no filler or repetition of the title.

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 no output schema, the description correctly compensates by describing the return contents in detail. The one remaining gap is the behaviour of the zero-required-parameter interface — no mention of defaults or of what a call with no arguments yields — but for a safe, idempotent read tool this is minor.

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 description coverage is 100%, with each of the three enum parameters documented in the schema, so the baseline is 3. The description restates the parameter names at a high level ('occasion, the weather and a style mood') without adding format or selection meaning beyond what the schema already carries.

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 verb ('Build a written outfit formula') and resource, and enumerates the three inputs it consumes (occasion, weather, mood). It is easily separable from explain_dress_code or search_guides, but it advertises a 'three-colour palette' while never clarifying how that differs from the sibling colour_combinations 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 by the phrase 'for an occasion, the weather and a style mood' — an agent can infer the context but gets no explicit when-to-use statement, no when-not-to-use, and no alternatives. Notably, all three parameters are optional, yet the description never says what happens if an agent omits them, which is exactly the guidance needed here.

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