vast42_create_creative

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

No annotations are provided, so the description carries the full burden of disclosing behavioral traits. It only says 'Create,' which implies mutation, but it does not mention side effects, required permissions, whether the creative is immediately active, or what the response contains. This is a significant transparency gap for a state-changing operation.

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 single sentence is front-loaded and has no waste, but it is under-specified to the point of being a tautology of the tool name. It does not add meaningful information beyond restating what the name implies, so it is not appropriately sized for the task.

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?

With no output schema and no annotations, the description should explain what the creation returns and any contextual details. It fails to do so. For a simple create tool with only two optional parameters, the description is somewhat usable but leaves critical context (e.g., return value, parent relationships) unaddressed.

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% coverage, with both 'name' and 'description' parameters having basic descriptions. The tool description adds no additional parameter context, but the baseline of 3 is appropriate since the schema already documents the parameters adequately, albeit minimally.

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 ('a VAST 4.2 creative'), making the basic purpose clear. However, it does not differentiate this tool from the many sibling create operations (e.g., vast42_create_ad, vast42_create_linear, create_video_creative), so it lacks the specificity needed to distinguish it from alternatives.

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. There is no mention of prerequisites, typical use cases, or exclusions. Given the large sibling list, this absence leaves the agent without context for choosing this tool over other create operations.

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