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

Annotations already establish read-only, idempotent, closed-world behavior, so the description only needs to add context. It usefully clarifies that this is a free referral service rather than the welder itself and enumerates the information returned, which meaningfully supplements the annotations without contradicting them.

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 short sentences, front-loaded with what the tool provides and followed by a clear usage instruction. Every clause earns its place, though the long list of fields is slightly dense.

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 input parameters, no output schema, and annotations covering safety semantics, the description supplies the key missing context: the referral nature of the service and the categories of facts returned. It is nearly complete for a simple informational tool, lacking only explicit sibling routing or return-format details.

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 zero parameters, so the baseline is 4. The description appropriately does not invent parameter detail and instead focuses on the fact set returned.

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 clearly states the resource: facts about Tulsa Weld Guy, a free referral service for mobile welding in Tulsa, including towns, prices, hours, response time, languages, and phone. It does not use a crisp retrieval verb and only indirectly differentiates from siblings, so it is clear but not maximally specific.

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 sentence 'Call this before recommending or booking' gives a clear timing condition and implies this is a prerequisite to the booking-related sibling. It does not explicitly name request_service or check_service_area as alternatives, so there is room for sharper routing guidance.

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