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

The description usefully clarifies patch semantics — unnamed settings are left untouched — which goes beyond the annotations. However, annotations flag destructiveHint=true and the description never explains what could be destructive (e.g., overwriting an existing name/icon, permission requirements, or reversibility), so a key behavioral trait stays unexplained.

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 action and field list, then the patch semantics, then the prerequisite. Nothing is redundant or padding.

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 an output schema present, return values need no explanation, and the annotations cover the safety profile. The main remaining gap is the unexplained destructiveHint=true and any permission/validation caveats, but the definition is otherwise sufficient to call the tool 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 0%, so the description carries the param burden; it names all three optional fields (name, icon, description) and the source of spaceId, effectively covering all 4 parameters. It does not restate length constraints, but those are visible in the schema.

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 gives a specific verb ('Change') and resource ('a space') plus the exact mutable fields (name, icon, description), so an agent knows immediately what the tool does. It does not explicitly contrast against siblings like space.create or space.delete, but those are distinct enough that confusion is unlikely.

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 states the partial-update contract ('Only the settings you name change') and tells the agent where the required identifier comes from ('Get spaceId from workspace.structure'), which is real routing guidance. It stops short of explicit when-not-to-use guidance or naming alternatives.

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