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

No annotations are provided, so the description carries the full burden. It correctly notes the tool performs full-text search and orders results by recency with relevance as a tiebreaker. However, it does not explicitly state that the operation is read-only or non-destructive, nor does it mention any auth or rate limits.

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 extremely concise: two sentences plus example usage. Every sentence adds value, and the critical information (search functionality, ordering, example queries) is front-loaded.

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 presence of an output schema, the description need not detail return values. It adequately covers the tool's purpose and basic behavior. However, the lack of parameter descriptions and usage exclusions leaves gaps for a tool with 4 parameters and no schema descriptions.

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 0%, so the description must compensate. It only obliquely references the 'query' parameter through example questions but does not explain the meaning or usage of 'lang', 'limit', or 'category'. This leaves the agent without guidance on how to set these parameters.

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 the verb 'search' and the resource 'Zipp's news catalogue', and specifies that it returns recent stories ordered by recency and relevance. This distinguishes it from sibling tools which are specific fetches (e.g., get_breaking, get_latest).

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 provides example questions ('what's happening with Bitcoin ETFs?') that illustrate when to use the tool. However, it does not explicitly state when not to use it or mention alternatives, though the sibling tool list implies that for specific items or categories, other tools might be better.

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