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

Annotations already declare non-destructive, idempotent, closed-world behavior, so the bar is lower. The description adds real value beyond them by disclosing the admin permission requirement and by enumerating what is NOT affected (membership, document links, billing), which prevents an agent from assuming side effects.

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 with the most important constraint ('Admin only') front-loaded, followed by the action and then the scope limits. Every clause earns its place and nothing is padded.

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?

For a two-parameter mutation with no output schema, the description covers the safety-relevant essentials: permission requirement and non-effects. It stops short of describing the response or failure behavior on an over-length name, which is a minor gap rather than a blocking one.

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 must carry parameter meaning. It clarifies that `name` is a display name and that `workspace_id` identifies the target workspace, but it omits the 80-character limit and any format expectations, so it only partially compensates for the undocumented 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?

States a specific verb and resource ('Change the workspace display name') and immediately bounds the scope by excluding membership, document links and billing. This distinguishes it from siblings like update_workspace_member_role, rename_document, and create_workspace without needing to open any schema.

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?

'Admin only' supplies a clear precondition for use, and the exclusion list implicitly tells the agent this is not the tool for membership changes. However, it never names an alternative tool or states positively when to prefer this over e.g. rename_document, so guidance remains implied rather than explicit.

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