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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the description's job is to add context, and it does: it discloses what is returned per business (location, a few services, booking link) and the fact that results are limited to Timio-bookable businesses. It omits result-count limits or pagination behavior, which matters for a search tool.

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?

Three tight sentences: what it finds, where, how to search, and what comes back. Nothing is redundant and the most important scope information leads.

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 three-optional-parameter search tool with no output schema, the description is nearly complete — coverage, verticals, query styles, and return contents are all stated. Only result-set sizing and behavior on empty/ambiguous queries are left unaddressed.

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 coverage is 100%, so all three parameters are already documented, and the description largely echoes that (city/neighborhood, name, service). It adds mild value by emphasizing multilingual query terms in non-English languages, but gives no guidance on combining query with location or country.

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 a specific verb (find) and resource (beauty businesses that book through Timio), and enumerates the supported verticals, so an agent knows exactly what this tool returns versus get_services or get_available_slots. The geographic scope and searchable facets are stated up front.

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 implied rather than prescribed: it makes clear this is the entry point for locating a business, and the examples ('gel nails', 'Dublin') show valid search styles. However, it never states when to prefer this over get_services, nor does it say whether all parameters are optional or what happens with an empty query.

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