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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered without description help. The description adds that the response includes policy links and support contact, which is content rather than behavior; it says nothing about auth needs, rate limits, or response shape. Adequate but adds limited behavioral value beyond the annotations.

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?

One sentence, front-loaded with the verb and resource, and the content enumeration is packed after a colon with no filler. Every clause carries information.

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 zero-required-parameter read tool with full annotation coverage and no output schema, the description does its job: it tells the agent what information comes back and that policy links are included. Only the absence of any statement about the language parameter or response format keeps it from a 5, and those gaps are minor here.

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% and the single 'language' parameter is fully documented in the schema with its default and enum values. The description never mentions localization, but per the baseline rule a 3 is correct when the schema carries the parameter semantics.

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 ('Read') and resource (store info and policies), then enumerates the content: what it sells, delivery, support contact, and links to terms/refund/privacy/FAQ. This is far more concrete than a tautology. It doesn't explicitly contrast itself with siblings like get_activation_guide or search_catalog, so it falls short of a 5.

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 content listing implies when to reach for it (agent needs store policies, delivery terms, or support contact), but there is no explicit when/when-not statement and no named alternative. With five siblings, an explicit pointer such as 'for product data use search_catalog' would have raised this.

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