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

Without annotations, the description carries the full burden. It states the tool is public and requires no authentication, which is helpful. However, it does not disclose behavior on invalid slugs, rate limits, or whether the response could be empty.

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 two sentences with no unnecessary words. It front-loads the core purpose and follows with a key usage note. Every word adds value.

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 read-only tool with one parameter, the description is largely adequate. It covers what is returned and the authentication requirement. However, the absence of output schema or description of response structure is a minor 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 input schema covers 100% of the parameter and its description. The tool description adds a concrete example of the slug format (e.g., 'baiterekresort-bitrix24-kz'), providing additional semantic clarity beyond the schema.

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 specifies the exact resource (public tenant profile and branding) and action (Get), including the fields returned (name, logo, colors, tagline) and the input (tenant public slug). This clearly distinguishes it from sibling tools like check_availability or create_reservation.

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 explicitly notes that no API key is required, providing a clear usage context. It does not explicitly state when not to use it versus alternatives, but the scope (public branding) is sufficiently clear.

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