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 elsewhere. The description contributes only the filtering semantics ('owned active'), leaving unstated whether pagination is needed, what the result shape is, or how the 'active' filter is determined.

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?

A single front-loaded sentence with no filler or redundancy. It is efficient, though its brevity borders on under-specification given seven undocumented parameters.

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 seven parameters, weak schema coverage, and no output schema, the description should explain what a returned workspace record contains and how the ambiguous params (url, days, direction) apply to a listing call. Neither is addressed, leaving real ambiguity about how to invoke it correctly.

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 only 29% — url, area, days, limit, offset, and direction have no descriptions at all, and several (url, days, direction) look unrelated to a plain workspace listing. The description names no parameters and gives no hints about defaults, ranges, or how url/area/days interact with workspace selection, so the coverage gap is left unmitigated.

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 brand workspaces) plus meaningful scope qualifiers ('owned', 'active'), which separates it from list_agents, list_connections, and list_documents. It does not explicitly name a sibling alternative, but the resource noun alone is discriminating enough.

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?

'For subsequent reads' implies the intended workflow: call this first to obtain workspace IDs that later read tools consume. However, there is no explicit when-not guidance, no mention of what to do if the list is empty or if the desired workspace is unowned/inactive, and no named alternative.

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