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

The readOnlyHint annotation already communicates the non-mutating nature. The description adds the workspace scope and enumeration scope, but it does not disclose pagination behavior, ordering, or response format beyond the cursor parameter in the schema.

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 six words with no filler: verb, object, scope. Every word carries meaning and the core purpose is front-loaded.

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 read-only list tool with one optional cursor, the description and schema together provide a clear contract. Minor missing context includes explicit mention of the return shape or pagination behavior, but these are not critical for an agent to know what this tool does.

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?

The sole parameter 'cursor' is fully documented in the schema as 'Pagination cursor', so the description does not need to add much. Since schema coverage is 100%, the baseline agreement of 3 is appropriate.

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 states a specific verb ('List'), a clear resource ('brands'), and a scope ('in the workspace'), which makes the tool's purpose immediately understandable. The word 'all' also differentiates it from single-brand retrieval and from sibling list tools targeting other resources.

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 description clearly indicates this should be used when all brands in the workspace are needed. It does not explicitly name alternatives like get_brand for single-brand lookups, but the plural scope and 'all' wording provide a clear usage context with no ambiguity.

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