create_data_key_target

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only says 'Create a new data key target,' which implies a mutating operation but does not explain whether existing targets can be overwritten, whether the target must reference an existing data key, what the response will be, or any error conditions. This is a significant gap for a creation 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 concise sentence, front-loaded with the verb and noun. It avoids unnecessary detail, but it is arguably too sparse—omitting useful context that could fit without harming conciseness. Still, it is appropriately sized for a simple CRUD operation.

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?

The tool is relatively simple with only two fully documented parameters and no nested objects. However, there is no output schema, no annotations, and the description does not explain what a 'data key target' is, how it relates to data keys, or what the API returns upon creation. For a straightforward create operation, this is minimally viable but has clear gaps.

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 has 100% description coverage for both parameters ('name' and 'target'), including a concrete JSON example for the target logic. The description adds only the phrase 'targeting rule,' which offers marginal additional context beyond the schema. The baseline of 3 applies because the schema does the heavy lifting.

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 ('Create') and the resource ('data key target'), with a parenthetical clarification that it is a 'targeting rule.' It does not explicitly differentiate from sibling tools like update_data_key_target, but the verb 'create' and the resource name make the core purpose unambiguous.

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?

No guidance is provided on when to use this tool versus alternatives such as update_data_key_target, list_data_key_targets, or delete_data_key_target. There is no mention of prerequisites, contexts, or exclusions, leaving the agent to infer usage from the name alone.

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