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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered. The description adds genuine behavioral context beyond that: results are returned in the site's own ranking order, and a no-match term yields an empty list rather than an error, which prevents an agent from misreading an empty result as a failure.

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, front-loaded with the core purpose before the parameter note and the error behavior. No filler.

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?

An output schema exists, so return structure need not be explained. The description covers purpose, parameter meaning, ordering, error behavior, and downstream integration with homedepot_search — everything an agent needs to invoke it correctly.

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 0%, so the description must carry the load — it does, defining term as the partial search text with a concrete example ('drill'). That is enough for a single-parameter tool, though it does not mention length limits or casing behavior.

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 ('typeahead suggestions for a partial query') plus the scope ('Home Depot's own search-box', 'site's own ranking order'), which cleanly distinguishes it from homedepot_search and the category/product siblings.

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?

Explains the workflow role clearly — each returned suggestion's term is directly usable as homedepot_search's q parameter — so an agent understands when to reach for this vs. jumping straight to search. It stops short of an explicit when-not-to-use statement or naming homedepot_search as the direct alternative by name.

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