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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The phrase 'no key' hints that no API key is needed, but this is ambiguous and no other behavior is described, such as result limits, language handling, fuzzy matching, or whether the search returns incomplete matches.

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?

The description is short and front-loaded with the core action, making it easy to scan. The opening 'Wikidata Search:' is slightly redundant given the tool name, but the rest of the sentence carries meaningful information without unnecessary detail.

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 simple one-parameter search tool, the description provides a minimal viable definition, especially since an output schema exists so return values need not be described. However, it lacks even basic usage context, alternative routing, or clarification of what 'no key' means, leaving the agent to guess in a large sibling tool ecosystem.

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?

With only one parameter 'q' and 0% schema description coverage, the description must clarify the parameter's meaning. It implies that the query is a Wikidata label, but it never explicitly names 'q', explains its format, or addresses the default empty string behavior, leaving significant ambiguity.

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 description clearly states a specific action ('Search') and resource ('Wikidata entities') with a scoping constraint ('by label'). It indicates no key is needed, which helps set expectations, but it does not explicitly differentiate this tool from the similarly named sibling 'wikidatasearch'.

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 description gives no guidance on when to use this tool versus alternatives such as wikidatasearch, nearbywiki, or wikipedia. There are no exclusions, prerequisites, or context about when label-based search is preferred, so the agent must infer usage from the name alone.

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