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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so the safety profile is covered. The description adds real value beyond them: the members:read scope requirement, how the workspace is resolved (configured workspace vs. workspace-key binding), and the shape of each returned entry.

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 short sentences, front-loaded with the core action and scope, with the field list and scope requirement following. The quoted example phrasings are slightly informal but earn their place as usage cues.

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?

With no output schema, the description compensates by enumerating the returned fields (UUID, email, name, role, join timestamp) and stating the auth scope. It is complete enough to invoke correctly; only return-volume/pagination behavior is unaddressed.

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% and both parameters are richly documented in the schema, so the baseline is 3. The description's note about the selected workspace vs. workspace-key binding marginally reinforces the workspace param but says nothing about the account parameter or its ACCOUNT_REQUIRED failure mode.

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 ("List all members") plus the exact scope (selected workspace or workspace bound to a key), and enumerates the returned fields. This is clearly distinguishable from sibling listing tools such as pm_list_workspace_members or hub_get_workspace.

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?

Gives concrete usage contexts ("tag this person", "summarize who said what in the last call") and states the required members:read scope, which is a real gating condition. It does not name an alternative tool or say when not to use it, so it stops short of full routing guidance.

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