get_trends

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

With no annotations provided, the description must convey behavioral traits. It only says 'current' trends, implying real-time data, but does not disclose whether the operation is read-only, any rate limits, or what the response structure looks like. No mention of pagination, sorting, or default behavior beyond the schema's defaults. The description adds minimal value beyond the obvious action.

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 a single, front-loaded sentence with no extraneous information. Every word contributes to stating the tool's core function. This is an example of efficient, concise specification.

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 there is no output schema and no annotations, the description should cover behavior and return expectations. It only states 'get current trends', but does not describe what the output looks like, any specific behaviors (e.g., current trends for a region), or limitations. The description is not complete enough for an agent to understand the tool's full usage without further guesswork.

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 schema has two parameters (limit, region) with 0% description coverage, and the tool description provides no additional meaning for them. It does not explain what 'region' accepts (e.g., codes, names) or how 'limit' behaves. The description's phrase 'for a region' hints at the region parameter but gives no format or constraints. This is insufficient compensation for the schema's lack of descriptions.

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 tool's purpose: 'Get current X trends for a region'. It identifies the specific resource (trends) and the action (get), which is clear even without comparing to siblings. It doesn't explicitly differentiate from sibling tools like search_tweets or x_search, but the verb+resource combination is unambiguous enough to warrant a 4.

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?

There is no guidance on when to use this tool versus the sibling tools (search_tweets, fetch_tweet, x_search_status, x_search). The description merely states what it does, without any context for selection or exclusion criteria. This is a clear lack of usage guidance.

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