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

Annotations already declare readOnlyHint, idempotentHint, and closed-world scope, so the safety profile is covered. The description adds real context beyond them: the return payload shape (titles, starting prices in USD, links) and the qualifier 'where there is one', warning that some results carry no price. It doesn't cover result ordering or relevance 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?

Front-loaded with the verb and scope, then the fallback routing — good ordering with no wasted framing. The long parenthetical catalogues of product and service types are slightly heavy but do real work for query formulation and coverage signalling.

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 only two optional parameters, no output schema and full annotation coverage, the description supplies everything an agent needs: what is searchable, what comes back, how to fall back for custom prints, and that an empty query lists the shop. No material gap remains.

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% and both parameters are documented there, including the empty-query-lists-shop behavior, so the baseline is 3. The description only restates that matching is 'by words' and never mentions the limit parameter or any matching nuance (substring, multi-word, ranking) that would add value over the schema.

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 and resource (search the DrMaker3D shop and its service pages) and enumerates the content domain so an agent knows exactly what corpus is indexed. It also distinguishes itself from three siblings (about_drmaker3d, print_price_examples, request_quote) for the custom-print case, and names what it returns (titles, starting prices, links).

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 trigger (match by words) plus an explicit exclusion with named alternatives: a custom print from a file has no product, so route to about_drmaker3d, print_price_examples or request_quote. It stops short of a full routing table — sibling print_options is never mentioned, and no guidance is given on choosing between searching and browsing.

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