List Juggle cities and their sitting rates

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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered; the description adds meaningful context beyond that by disclosing the public, unauthenticated nature and that data comes from the public Locations page. It does not discuss response size, caching, or pagination, but for a read-only public lookup that gap is minor.

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?

Two tight sentences: the resource and payload are front-loaded, followed by the access and filtering constraints. No filler and nothing repeated from the schema.

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 usefully enumerates the returned fields (rates, support email) so the agent knows what to expect. The richness of the view modes is already handled by the schema. Only minor gaps remain, such as how many cities are typically returned.

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?

Schema description coverage is 100% and both parameters (view, state) are fully documented in the schema, so the baseline is 3. The description only adds a format example ("North Carolina") and reconfirms the filter is optional, which is marginal value over 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?

States a specific verb and resource (list the cities Juggle serves, by state) plus the exact payload fields (babysitting/petsitting hourly rates, support email) and the source of truth (Juggle's public Locations page). This is clearly distinct from sibling tools like juggle_list_sitters or juggle_get_sitter, which deal with people rather than service areas.

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?

"Needs no sign-in" tells the agent this is an unauthenticated public lookup, and the optional state filter gives a concrete usage context. It does not name an alternative tool or state when NOT to use it, so it stops short of full when/when-not guidance.

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