Create MIO Folder

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

Annotations already declare readOnlyHint=false and destructiveHint=true, so the write nature is covered. The description adds nothing about what happens on a name collision, whether duplicates are allowed, whether the call fails or overwrites, or what is returned (a folder id?) — meaningful gaps for an operation the annotations themselves flag as destructive.

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. It is efficient, though the length means there is essentially no supporting detail.

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 one-parameter creation tool with no output schema, the description covers the what but not the outcome or failure modes. An agent still does not know what happens after creation or how to reference the new folder.

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?

There is a single required parameter with 100% schema description coverage ('Name for the new MIO folder'), so the schema already carries the semantics. The description adds no constraints such as allowed characters, length, or uniqueness rules, leaving it at the baseline.

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: 'Create a new custom folder in MIO', with a clarifying gloss that MIO is internal messaging. This clearly separates it from the read-style siblings like get-mio-folders, though no sibling is named explicitly.

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?

There is no guidance on when to create a folder versus using the default folders, no prerequisites, and no mention of the related siblings (move-mio-message, get-mio-folders) that would typically follow. Usage is only implied by the verb.

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