create_item

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

With no annotations, the description must fully disclose behavior. It only states that an item is created and that parent_id is required, but lacks information on side effects, permissions, return values, or whether fields are validated. This is insufficient for a mutation tool.

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?

The description is very short (two sentences), which is concise but lacks essential information. It could be expanded without becoming verbose. Front-loading is fine, but the brevity sacrifices utility.

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?

Given 4 required parameters including a nested object, no output schema, and no annotations, the description is drastically incomplete. It provides almost no context beyond the creation action and one parameter's requirement, leaving the agent unable to use 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 must compensate. It explains parent_id as '親ノードで必須' (required parent node), but does not describe project_id, item_type_id, or the nested fields object, leaving the agent without crucial parameter semantics.

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 clearly states that the tool creates an item ('アイテムを作成する'), and it is distinct from siblings that deal with relationships, comments, etc. However, it does not explicitly differentiate itself from similar creation tools like create_relationship or create_test_plan, though the resource type differs.

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?

The description offers no guidance on when to use this tool versus alternatives. Sibling tools include update_item, search_items, and various creation tools, but no conditions or exclusions are provided.

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