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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety and network profile. The description adds that output is metadata plus readable body paragraphs and that the article must be public, which is useful context, but it discloses nothing about paywalls, failure modes, or truncation.

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?

One sentence, no filler, with the extraction scope front-loaded ahead of the input requirement. Nothing extraneous.

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 present and annotations covering safety, the description only needs to state purpose and input, which it does. It stops short of noting any caveats about non-public or inaccessible URLs, so it is solid but not exhaustive.

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 coverage is 100% and the URL parameter is already fully documented in the schema, so the description's 'provide its canonical article URL' only restates it. Baseline 3 is appropriate when the schema does the heavy lifting.

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 (extracts) and resource (metadata and readable body paragraphs) scoped to exactly one public SBS News article. The singular scope cleanly separates it from sibling list tools like sbsnews_headlines, sbsnews_news and sbsnews_sections.

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 single-article scope and the instruction to supply a canonical URL imply when to use it, but no alternatives or when-not conditions are named (e.g. it never says to use sbsnews_headlines for discovery and this tool only for full text). Adequate implied usage, no explicit routing.

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