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

The annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered structurally. The description adds content-scope context (which fields the price list contains) but discloses no behavior beyond that — no freshness, currency/format caveats, or whether prices are current. With annotations carrying the read-only burden, 3 is appropriate.

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?

A single dense sentence that front-loads the resource and then the parenthetical enumeration of contents. Nothing is padded or redundant, and it is appropriately sized for a zero-parameter lookup tool.

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 simple, zero-parameter read tool with no output schema and no nested structures, the description covers both the primary data (subscription packages and prices) and the secondary rule (pricing for other services). It could say a little more about the shape of what comes back, but nothing essential for correct invocation is missing.

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, so the schema has nothing to document and the baseline is 4. The description correctly implies a no-argument retrieval of a single fixed price list, and introduces no parameter-like concepts that would need explanation.

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 (the 'Pogotowie IT' subscription price list) and enumerates its contents — packages, net monthly prices, hours, response time — plus a pricing rule for other services. That is concrete and non-tautological. It stops short of distinguishing itself from the potentially overlapping sibling 'list_offers', so it lands at 4 rather than 5.

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?

There is no explicit when-to-use or when-not statement, nor any named alternative. The content scope (subscription pricing plus pricing rules for other services) strongly implies its usage, which is the definition of implied guidance. An agent can reasonably infer the trigger, but it must do so itself.

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