create_subtask

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

With no annotations provided, the burden is on the description to disclose behavior. 'Create' implies a write operation, but the description does not mention side effects, required permissions, idempotency, or whether the parent task is validated. The procedure is a black box, which 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 a single sentence with no waste, and it is front-loaded with the core action. It is concise and clear, though it could be slightly more informative without hurting conciseness.

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 this is a mutation tool with 7 parameters, no annotations, and no output schema, the description is too thin. It does not explain return values, error handling, or prerequisites like ensuring the parent task exists. An agent may need to guess at behavior beyond the basic operation.

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 coverage is 100%, so all parameters are already described. The description adds no extra meaning beyond the hierarchy implied by 'under an existing task'. The baseline of 3 is appropriate since the schema carries the parameter documentation, but the description does not clarify parameter relationships beyond what the schema says.

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 verb 'create' and the resource 'subtask' under an existing task, which is specific. However, it does not explicitly distinguish from similar tools like create_task or update_subtask, though the phrase 'under an existing task' provides some differentiation.

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 implies that the parent task must exist, but does not explicitly state when to use this tool versus create_task (e.g., when you need a child task) or when not to use it. No alternatives are mentioned, so usage context is only weakly implied.

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