Create Topic

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 behavioral disclosure. It explains the concept of topics but does not disclose what happens on creation, such as response format, duplicate handling, required permissions, or side effects. The immutability of 'defaultSubscription' is noted in the schema, not the description.

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 two concise sentences. The first sentence states the action and scope; the second provides useful domain context. There is no wasted information, and the key point is front-loaded.

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?

For a simple creation tool with full schema coverage, the description is largely complete: it states the action, scope, and explains the domain relevance of topics. The main gap is the lack of return value or post-creation behavior, but this is minor for such a straightforward 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 description coverage is 100%, so the schema already documents all parameters (name, description, defaultSubscription) with clear explanations. The description adds no additional parameter-level meaning, but the baseline of 3 applies because the schema carries the burden effectively.

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 uses a specific verb ('create'), names the resource ('topic'), scopes it to 'Resend', and adds value by explaining the purpose of topics (managing subscription preferences). This clearly distinguishes it from sibling tools like 'update-topic' and 'remove-topic'.

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 usage (create a topic when you need a new subscription preference group) and provides domain context, but it does not explicitly state when to use this tool versus alternatives, nor does it mention any exclusions or when-not-to-use scenarios. The guidance is implied rather than explicit.

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