get-news-sources

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states 'Get available news sources', implying a read-only operation, but does not confirm safety, rate limits, or any side effects. The lack of explicit read-only or idempotent declaration leaves room for uncertainty.

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 one short sentence, achieving conciseness with no wasted words. However, it could include additional useful context (e.g., output format) without becoming verbose. It is efficient but minimal.

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 three optional filter parameters and absence of output schema, the description does not inform the agent about return values (e.g., list of source objects with names, URLs). This lack of output context makes the tool less complete for an agent deciding whether to use it.

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?

Since schema coverage is 100% and all parameters have clear descriptions with enums, the description adds no extra meaning. The baseline is 3, and the description does not compensate beyond the schema.

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 'Get' and resource 'available news sources', indicating the tool retrieves a list of sources. However, it does not differentiate from sibling tools like get-top-headlines or search-news, which could be clearer by specifying that it returns metadata about sources rather than articles.

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 no guidance on when to use this tool versus alternatives. It does not mention that filters (category, language, country) are available, nor does it explain that this tool is for listing sources rather than fetching headlines or articles.

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