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

Beyond the readOnly/openWorld annotations, it discloses non-obvious query semantics (q matches name, alias, OR producer name) and a real behavioral trap (a combined producer-plus-product phrase may not match), plus the critical warning not to infer nonexistence from an empty result. That is substantive behavioral context the annotations cannot carry.

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?

Front-loaded with purpose and routing, and nearly every sentence carries actionable content. It is dense and slightly long, but there is little filler to cut.

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 5-param, no-output-schema search tool, it covers matching semantics, empty-result handling, and the downstream verification chain. It stops short of explaining pagination or category filtering, which an agent needs to call the full parameter surface.

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 0% for 5 parameters, so the description must compensate. It explains q (matching scope) and producer (must be an exact slug), but says nothing about page, limit, or category, leaving three parameters entirely undocumented.

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 ('Find a beverage by name or alias') and immediately differentiates from the sibling search_producers ('Start here for drink names, not search_producers'). An agent can route between the two search tools without opening either schema.

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?

Explicitly names alternatives and the conditions that select them: use this for drink names, use search_producers for producers, use the producer param with an exact slug to list a producer's drinks. It also prescribes follow-up chaining (get_beverage, then get_claim) and gives a fallback strategy when results are empty.

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