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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds the useful fact that the response is descriptive content (sections, data sources, example questions, URL) rather than data records. It says nothing about size or structure of that payload, so beyond the annotations it is only moderately additive.

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 compact sentences with no filler. The ordering is slightly backwards for scanning purposes: it leads with a list of section names before stating the purpose, so the 'what is this for' clause arrives last.

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 parameterless guide tool with no output schema, the definition tells the agent what the payload contains and when to request it, which is sufficient to invoke it correctly. A note on response language/size or an explicit pointer to data siblings would close the remaining gap.

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?

The tool takes zero parameters and the schema is an empty object, so there is nothing for the description to disambiguate. Baseline 4 applies; the description correctly implies the call is argument-free.

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 names a specific resource and enumerates its contents: sections ("pasze dla drobiu, sery domowe, ceny rolne, kupię od rolnika"), each with a description, data provenance, sample questions, and a guide page URL. This clearly separates it from data-returning siblings like ceny_aktualne or pasze_szukaj_dodatkow, though it never names an alternative 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?

It gives concrete triggering questions: "co umie ten łącznik?" and "od czego zacząć?", which tells the agent this is the meta/onboarding entry point. It stops short of an explicit exclusion such as "do not use this to fetch actual prices", so the boundary with siblings is implied rather than stated.

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