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

Annotations already cover read-only, idempotent, non-destructive, closed-world, so the description adds value with content-level disclosure: results are quoted from Trimi's state page with the link, and the 'not FDA-approved' compounding caveat. It does not say what happens for an unknown or unsupported state input, which is the main remaining gap.

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?

A single front-loaded sentence carries the availability answer, the ancillary billing/ordering content, the source attribution and the eligibility exclusion in order of importance, followed by two short disclaimer clauses. It is dense but each clause does work; the opening clause is slightly overpacked.

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 nonetheless tells the agent what comes back (state-page wording plus link) and what it explicitly does not decide (individual eligibility). Only the invalid/unsupported-state behavior and any fallback routing to eligibility_and_states are missing.

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% and the single state parameter already documents accepted forms (full name, two-letter abbreviation, slug) and the no-personal-details constraint. The description only says 'when someone names their state', adding little beyond the schema, so baseline 3 applies.

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/resource/scope: whether residents of a named US state can get Trimi's evaluation for compounded semaglutide or tirzepatide, plus how ordering, billing and payment work there. It also returns the source's own wording and link, which tells the agent the output shape and distinguishes it from a generic lookup.

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?

'Use when someone names their state' is an explicit trigger, and 'Does not assess any individual's eligibility; a licensed provider decides' draws a clear boundary against the eligibility_and_states sibling. It does not name that sibling directly or say what to call instead when the user asks about personal eligibility, so routing is left partly implicit.

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