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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The word 'public' hints that the operation is safe and unauthenticated, but the description does not explicitly state that it is read-only, has no side effects, or what response format to expect. It also doesn't mention any rate limits or data sensitivity. This is a significant gap for a tool with no annotation support.

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 a single, compact sentence that front-loads the action and the three categories of output. Every word contributes meaningful information, with no fluff or redundancy. It is appropriately sized for a parameter-less 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?

Given the tool's simplicity (no parameters, no output schema), the description is largely complete. It explicitly lists the return categories: site identity, machine-readable endpoints, and MCP endpoint information. A minor omission is the lack of detail about the structure or format of the returned data, but for an overview tool this is acceptable. The absence of annotations is the main reason this isn't a 5.

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 has zero parameters, so the description has nothing to add about parameter meaning. The schema coverage is trivially 100%. Per the rubric, a zero-parameter tool earns a baseline of 4, and the description even enumerates what will be returned, which adds context without needing to discuss parameters.

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 states a specific verb ('Return') and a well-defined resource ('public site identity, machine-readable endpoints and MCP endpoint information for ABC Remonty Oleba'). This clearly distinguishes it from sibling tools like get_content or get_prices, which target different resource types. An agent can immediately understand what this tool provides.

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 implies the tool should be used when the agent needs an overview of the site's identity and endpoints. However, it does not explicitly state when to use it over alternatives, nor does it note any exclusions or prerequisites. The purpose is clear enough that an agent can infer usage, but there is no direct guidance.

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