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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile needs no explanation. The description adds only the payload shape, that the article arrives as HTML content plus SEO metadata, which is the kind of detail the output schema already covers. Nothing about permissions, size of the HTML payload, or failure mode for an unknown articleId is disclosed.

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 guidance is front-loaded into two sentences: the noun phrase that names the payload, then the when and when-not routing. It loses a point because it opens with a Romanian sentence and then restates essentially the same content in English, so the definition duplicates itself instead of committing to one language.

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 single-parameter read tool with an output schema that documents the return shape, the definition covers everything the agent needs to call it correctly. Because it is such a simple operation, the omission of the not-found behavior and of the authentication context barely matters. It is complete enough, but not so thorough that nothing is left for the agent to discover at runtime.

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?

There is a single parameter with 100% schema description coverage, and the schema itself says the id comes from list_articles or create_article. The description adds no behavior beyond that; it never repeats or extends the meaning of articleId. The baseline of 3 is appropriate when the schema already documents the only parameter.

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?

It states a specific verb and resource and adds what the caller receives: the whole article with HTML content and SEO metadata. It clearly separates itself from list_articles. It stops short of 5 because it never distinguishes itself from the closely related sibling check_article_seo, which also touches SEO fields.

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 gives an explicit use condition (you need full text plus SEO fields for one article) and an explicit exclusion (do not use for listing; use list_articles instead), so the agent has clear routing guidance. The only gap is that it does not say when to prefer check_article_seo, so an agent comparing those two siblings has to infer the answer.

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