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

Annotations already declare readOnlyHint=true and destructiveHint=false. The description reinforces 'Read-only' (redundant) but adds 'free' and the specific output fields (email, role, status), which are not in annotations. This adds information about cost and returned data, going beyond what annotations provide.

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 a single sentence that front-loads the action and resource, lists the output fields, and appends 'Read-only, free.' Every word serves a purpose; no fluff or repetition beyond the necessary.

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?

Given zero parameters, no output schema, and annotations covering read-only and destructive behavior, the description adequately covers purpose, output, and safety. It is complete for an agent to call correctly without needing additional information.

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?

With zero parameters, the description need not explain parameters. Schema coverage is 100% vacuously. The description adds value by stating the output content, which is the only relevant semantic here.

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 clearly states the action (list), the resource (members of the current brand workspace), and the exact fields returned (email, role, status). It distinguishes itself from the many other list_* tools by scoping to team members within a brand workspace, leaving no ambiguity about what it does.

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 implies when to use it (when team member details are needed) but does not explicitly mention alternatives like invite_member, remove_member, or list_creators, nor does it state when not to use it. However, the phrase 'current brand workspace' provides useful context about the scope.

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