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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds no behavioral context beyond that — no mention of rate limits, auth needs beyond the api_key param, or what a caller sees if unauthenticated. Content flavor ('verified by machine') is not behavioral disclosure.

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?

It is one long sentence with a parenthetical list dump that reads like a storefront blurb rather than instructions. It is not bloated enough to be harmful, but the key information (what the call returns) is not front-loaded.

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?

An output schema exists, so return values need not be explained, and annotations cover the safety profile. For a zero-required-param view tool this is minimally sufficient, but the description never says what the view actually surfaces (floors, progress, submissions), leaving the agent to guess at the payload's purpose.

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 optional parameter, api_key, and the schema documents it fully (100% coverage), so the schema already does the work. The description adds nothing about parameters, making the baseline 3 appropriate.

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 tells the agent what the Riddle Tower contains (floors, summit, proposal wall) but never states the action plainly, e.g. 'returns the current state of the tower'. A reader can infer it is a read-only view, but the verb+resource framing comes from the name, not the text. It also does not distinguish itself from the sibling tower_answer.

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 guidance on when to call tower_view versus tower_answer, city, or the frontier_* tools. Nothing indicates prerequisites (e.g. whether registration is needed) or what triggers a view. Usage is only implied by the tool name.

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