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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description goes further by disclosing the shape of what comes back (address, phone, maps link, facilities per studio) and adds a genuine business fact, 'One pass works at all four', which an agent could not derive from structured fields. It says nothing about caching or how static the data is, but that is minor here.

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?

One short sentence, front-loaded with the resource and its contents, followed by a compact caveat. Nothing is repeated and every clause carries information an agent can act on.

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?

With no output schema, the description carries the burden of telling the agent what it gets, and it does so by listing address, phone, maps link and facilities. The phrase 'what each has' is slightly vague about amenity detail, but an agent has enough to decide whether to call it and what to expect.

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 no parameters, so there is nothing about arguments that the description could or should explain. The baseline for a zero-parameter tool applies, and the description wastes no space on argument talk.

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 the exact resource and enumerates its contents: the four studios (Rathmines, Ranelagh, Harold's Cross, Charlemont) plus address, phone, maps link and facilities. It is unambiguously distinct from the sibling tools (classes, prices, schedule, teachers, workshops). It lacks an explicit action verb, but for a zero-parameter lookup resource the purpose is still fully clear.

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?

Usage is only implied: an agent can infer this is the tool for location/contact/facility questions and that the other five siblings cover classes, pricing, schedule and staff. There is no explicit when-to-use statement and no stated exclusions or alternatives, so routing has to be inferred from the resource name.

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