top_news_by_site_powered_by_google

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

No annotations are provided, so the description carries full burden. It hints at behavioral traits like returning 'more detailed news, top images etc' when 'more_information: true' is set, but this contradicts the schema (which has no parameters). This creates confusion about how to control output. It doesn't disclose other behaviors such as rate limits, authentication needs, or data freshness.

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 brief but poorly structured and front-loaded with confusing information about a non-existent parameter. The two clauses are disjointed: one about setting a parameter and another about the tool's purpose. It wastes space on irrelevant details, reducing efficiency, though it's not overly verbose.

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?

Given the tool's complexity (news retrieval with potential filtering by site) and lack of annotations and output schema, the description is incomplete. It fails to explain what 'by site' entails, how results are returned, or what 'top news' means (e.g., recency, popularity). The misleading parameter reference adds to the inadequacy, leaving gaps for an AI agent to use it correctly.

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?

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description attempts to add semantics by mentioning 'set more_information: true', but this is misleading since no such parameter exists. However, with zero parameters, the baseline is 4, as the description doesn't need to compensate for schema gaps, though the misleading part slightly reduces clarity.

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 'get top news by site' which provides a basic purpose (verb+resource), but it's vague about what 'by site' means (e.g., filtering by website domain, aggregating from specific sites). It doesn't distinguish from siblings like 'top_news_by_category_powered_by_google' or 'top_news_by_locationpowered_by_google', leaving ambiguity in scope. The first part about 'set more_information: true' is confusing since there are no parameters in 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?

No explicit guidance on when to use this tool versus alternatives is provided. The mention of 'set more_information: true' implies a parameter that doesn't exist in the schema, which could mislead usage. There's no context on prerequisites, timing, or comparisons to sibling tools like 'news_api_v2_powered_by_google' or 'top_news_powered_by_duck_duck_go'.

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