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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, so safety is covered. The description goes beyond them by disclosing the shape of the response (renewal window, fee, method of online/mail/reapply, and required forms), which is meaningful added context given there is no output schema. It stops short of stating data freshness, source of truth, or that results may be unavailable for unknown license types.

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 clauses — what it determines and what it returns — front-loaded with the domain and no filler. Every phrase corresponds to a capability or a returned field.

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 read-only, three-parameter query with no output schema, the description covers purpose and return fields explicitly, which is most of what an agent needs. The one gap is the optional `expires` input and its documented downstream effect, which the agent must discover from the schema alone.

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%, so the schema already documents all three parameters including the optional `expires` date. The description restates the two required inputs conceptually but adds nothing about `expires` and its effect of adding three fee-step dates to the result; baseline 3 is appropriate when the schema carries the load.

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 ("Say how a Texas electrician license renews") and enumerates the returned fields (window, fee, method, forms), so the agent knows exactly what it gets. It never names or contrasts the nearest siblings (lookup_license, get_form, list_license_types), so differentiation is left to inference.

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 by the phrase "for a license type and the months since it expired," which tells the agent the precondition implicitly (you need a license type and an elapsed-months count). There is no explicit when-to-use / when-not-to-use guidance and no pointer to lookup_license for basic facts or list_license_types for resolving the type.

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