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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds that headlines are 'current' and come from a 'public' section, which is minor behavioral context, but it does not disclose rate limits, pagination, or authentication needs beyond what annotations provide.

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?

Two tightly written sentences with no filler. The core purpose is front-loaded, followed by the parameter requirement, so 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?

Given the simple one-parameter input, existing output schema, and annotations, the description is nearly complete: it states what is returned (titles and URLs), where the slug comes from, and the scope. Minor gaps such as result ordering or limits are not addressed, but the output schema covers the return structure.

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% and there is one required parameter. The description compensates well by identifying the parameter as a 'section slug' and stating it must come from motleyfool_sections, giving the agent the meaning and source of the value rather than leaving it as a bare string.

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 (Get), resource (current article headlines), and scope (one public investing-news section), and explicitly names the returned fields (titles and article URLs). It distinguishes itself from sibling tools like motleyfool_news by being section-scoped rather than general news.

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 implies usage by requiring a section slug returned by motleyfool_sections, but it does not explicitly say when to use this tool versus alternatives such as motleyfool_news or motleyfool_article. No when-not or alternative conditions are provided.

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