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

Annotations already declare read-only, idempotent, non-destructive behavior, so the baseline is lower. The description adds useful context beyond annotations: no key/auth requirement, role-based ranking, and that returned tools are grouped by action. It does not describe exact return shape or pagination, but the annotations and schema carry much of that burden.

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?

The description is short, but the first sentence is a fragment and the final sentence is confusing and partly redundant. The role sentence largely repeats the schema, so not every sentence earns its place.

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 simple search tool with full schema coverage and safety annotations, the definition is mostly complete. The main gap is the absence of an output schema combined with only a vague indication of what the returned tool list looks like.

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%, so the baseline is 3. The description earns an extra point by giving concrete query examples and explaining that role ranks that role's tools first; limit is left to the schema, which is reasonable.

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 indicates that the tool accepts a plain-language description of an action and returns matching tools, supported by examples like "ship an order" and "post a request". It is clear enough to identify a tool-search resource, though it never explicitly says "search" and does not distinguish itself from sibling discovery tools such as commercebook_capabilities.

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 examples imply when this tool is useful, and "No key needed" plus the role-ranking note provide operational context. However, there is no explicit statement of when to use this versus siblings, and no exclusions or alternatives are named.

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