items-add_child

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

No annotations are provided, so the description must carry full weight. It only states the action without disclosing side effects, permissions, or behavior beyond the basic operation. The agent has no information about potential cycles, ownership changes, or error conditions.

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 a single, well-structured sentence with no wasted words. It is appropriately concise for a simple operation, though it could marginally benefit from additional details about the operation's effect.

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 the tool's simplicity and no output schema, the description provides minimum viable information. However, it lacks any context about side effects or relationship behavior, which an agent might need for safe invocation.

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?

The input schema fully describes both parameters with format hints. The tool description adds no extra meaning beyond repeating the purpose. With 100% schema coverage, the description's contribution is neutral, meeting the 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 clearly states the action 'Adds' and the resource 'existing item as a child of another item', making the tool's purpose unambiguous. It effectively distinguishes from sibling tools like 'items-list_children' or 'items-move'.

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 provides no guidance on when to use this tool versus alternatives such as 'items-move', 'items-link', or 'items-move_to_case'. The lack of context or exclusions leaves the agent without decision support.

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