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

With no annotations provided, the description carries the behavioral disclosure burden. It discloses the output nature (headlines with short descriptions) and the limit parameter's default and maximum values, which go beyond the schema. However, it does not mention read-only behavior, output ordering, error handling, or rate limits, leaving some behavioral ambiguity.

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 two sentences with no waste: the first sentence states the core purpose and output, and the second provides essential parameter constraints. Information is front-loaded and every sentence earns its place.

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 read-only news tool with one optional parameter and no output schema, the description covers the essential aspects: what is returned, the result format at a high level, and the limit constraint. Missing details such as exact response structure or behavior when limit exceeds the maximum are minor given the tool's low complexity.

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% description coverage—the only property is a bare 'limit' of type number. The description compensates meaningfully by stating the default (10) and maximum (30), giving agents crucial constraint information. It does not explicitly state that limit is the number of headlines to return, but this is reasonably inferable from context.

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 identifies the resource as 'latest crypto news headlines with short descriptions,' which is specific enough for an agent to understand what the tool returns. The tool name get_news supplies the verb, and the purpose is distinct from all trading-focused sibling tools, though the description itself does not explicitly state an action verb.

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 when-to-use or alternative tool guidance is provided, but the intended use is strongly implied by the unique news-focused purpose among trading siblings. There is no misleading information, yet there is also no explicit condition directing the agent when to choose this tool over others.

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