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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds value the annotations cannot: it discloses what the response contains (plan, usage, monthly cost) and that results are scoped to "this connection". It does not mention ordering, pagination or failure modes, but for a zero-argument read that is acceptable.

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?

Two sentences, no filler. The primary purpose leads, and the follow-on sentence about reusing the workspace name is actionable rather than decorative.

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 and zero parameters, the description is the only source of return-value information, and it names the key fields. It stops short of noting whether the list can be large or ordered, which would matter for an agent consuming it programmatically.

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 tool takes no parameters, so the baseline is 4. The description goes slightly further by explaining the meaning of the "workspace" argument as it is used in other tools, clarifying the identifier vocabulary an agent will need downstream.

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 (see/list) and resource (AvianSuite workspaces this connection can use) and even names the payload fields returned (plan, usage, monthly cost). No sibling tool lists workspaces, so it is trivially distinguishable from the rest of the set.

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 second sentence gives concrete workflow guidance: take a workspace name from here and pass it as the "workspace" argument of any other tool. That implies when to call it (before acting on a workspace) but states no exclusions or alternatives, which is a minor gap given no sibling overlaps.

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