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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description meaningfully adds that searches hit a verified Saudi index first and only fall back to the global engine when results are sparse, which an agent cannot infer from the annotations.

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 content is front-loaded and compact, but the Arabic sentence repeats the English content verbatim rather than adding information, which slightly inflates the length. The English portion alone is efficient and well-ordered.

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 discloses the return shape (title, URL, snippet). Combined with annotations covering the safety profile and a fully documented input schema, an agent has what it needs; only pagination or result-ordering behavior is left unstated.

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 (query and limit, including range and default) are fully documented in the schema. The description adds no additional parameter semantics, so the baseline of 3 is appropriate.

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 states a specific verb and resource ("Search the web") plus the defining scope (Saudi focus via the search-ksa index with a global fallback). None of the sibling tools (search_souq, search_flights, search_hotels, etc.) perform generic web search, so an agent can immediately distinguish it.

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?

It explains the internal two-tier resolution order (Saudi index first, global engine if results are few), which implies when the tool is appropriate, but gives no explicit guidance on when to prefer it over siblings such as search_souq or when not to use it at all. Usage is implied rather than stated.

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