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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds that results are paginated and consist of canonical URLs rather than full articles, which is useful, but it does not disclose other behavioral traits such as rate limits or total-count behavior; with annotations covering the safety profile, this is adequate but modest.

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 sentences that are front-loaded with the core action and never repeat themselves. Every clause earns its place, and the pagination/input hint is delivered compactly.

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?

With an output schema, a fully covered input schema, and annotations, the description needs only to frame purpose and inputs, which it does. It is sufficient to call the tool correctly, though naming the prerequisite sibling tool explicitly would complete the picture.

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 100%, so all three parameters (month, page, limit) are documented with formats and defaults in the schema. The description only restates their existence and adds no syntax or format meaning beyond what the schema already provides, making the baseline 3 appropriate.

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?

States a specific verb (List) and resource (canonical GhanaWeb article URLs) with a clear scope (from a discovered month), which distinguishes it from ghanaweb_article and ghanaweb_headlines. The 'discovered month' phrasing hints it is downstream of ghanaweb_archive_months, though that sibling is not named explicitly.

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 requirement to provide a month 'from a discovered month' implies the workflow of first calling ghanaweb_archive_months, and the schema reinforces this. However, no explicit when-to-use vs alternatives or exclusion guidance is given, leaving the usage context largely inferred.

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