create_channel_category

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

No annotations are provided, so the description must carry the full behavioral burden. It discloses only that the new category starts empty; it says nothing about permission requirements, whether duplicate names are rejected, whether the operation is reversible, or what identifier is returned for later use with move_channel_to_category.

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 well-formed sentence with no filler and the key qualifier ("empty") front-loaded before the noun. It is efficiently sized for the tool's simplicity, though it offers no structure beyond that one clause.

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?

This is a mutation tool with no annotations and no output schema, yet the description explains neither permissions nor the result of the call. For a create operation whose output (a category ID or object) is presumably needed to add channels afterwards, that omission is significant.

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%, so both team_id and display_name are already documented in the input schema. The description adds only the implicit point that no channel list parameter exists because the category is created empty. That matches the schema baseline of 3.

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 uses a specific verb and resource: "Create an empty custom channel sidebar category." The word "empty" usefully signals that no channels are included, distinguishing it from move_channel_to_category. It does not name the sibling tools it complements, but the core action is unmistakable.

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 use this versus update_channel_category, list_channel_categories, or delete_channel_category. It also omits prerequisites, such as whether the caller must be a team admin or whether an existing category with the same display_name is allowed. The agent must infer all usage context.

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