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

No annotations exist, so the description carries the full burden. It adds one genuinely useful behavioral fact — amazon.se links carry ?tag=sw-dormkit-21 when configured — but omits whether this is a network/lookup operation, what happens when multiple of url/asin/keywords are supplied (precedence), and any failure or not-found behavior.

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?

Three tight sentences, front-loaded with the core capability followed by the hard requirement and then the affiliate-tag nuance. Nothing is padded, though the amazon.se sentence reads as an aside rather than an integrated constraint.

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, no annotations, and 7 parameters at 29% coverage, the description is not fully adequate: it never says what the returned deep-link looks like structurally, how conflicting inputs are resolved, or what category/budgetBand do. It is enough to attempt a call, not enough to call it confidently.

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 only 29% across 7 params, so the description must compensate. It covers the intent of url, asin, keywords, marketplace and locale in prose, but category and budgetBand are never mentioned in either the schema or the description, leaving two parameters with zero documented meaning.

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 first sentence names a specific verb (Resolve) and the exact resource (ASIN / Amazon URL / keywords → buy deep-link), which is unmistakably distinct from all the kit-management siblings. It stops short of explicitly differentiating itself, but an agent can tell what it produces without opening the schema.

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 implied by the enumerated input types and the emphasized 'marketplace + locale REQUIRED', but there is no statement of when to prefer this over, say, list_marketplaces, nor any exclusion or prerequisite context. No sibling performs product resolution, so the routing risk is low, yet the guidance is only implicit.

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