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

Annotations already declare readOnlyHint=true, openWorldHint=true, destructiveHint=false, so the safety profile is covered. The description adds real value beyond that: the permission scope (owners/admins/moderators) and the authentication prerequisite (Cotlet API key with access to this app), which the annotations do not convey.

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 sentences, front-loaded with the metrics, then audience, then auth. Slightly redundant in restating 'all-time and last 7 days' twice, but every sentence carries actionable content.

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 naming the returned statistics, their time windows, and the Top Content ranking. Combined with the audience and auth notes, an agent has everything needed to call 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 100% and the single space_id parameter is documented in-schema as coming from list_my_spaces. The description adds no additional parameter meaning, so the baseline of 3 applies.

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 and resource ('Get Space stats') and then enumerates exactly what is returned: views, followers, upvotes, comments, notification clicks, all-time and last 7 days, plus Top Content ranked by views and upvotes. This clearly distinguishes it from siblings such as quora_list_my_spaces or quora_list_space_submissions.

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?

It gives useful access context ('Visible to Space owners, admins and moderators' and the Cotlet API key requirement), which tells the agent when the call will succeed. However, it never names an alternative tool or states a when-not-to-use condition, so routing guidance is only implied.

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