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

With no annotations, the description carries the full burden of disclosure. It mentions the API key requirement, the creation side effects (email invites), the return values (claim + HR dashboard links), and the fulfillment flow. It omits details on reversibility or idempotency, but primary behaviors are transparent.

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 dense sentences, front-loaded with purpose and auth, and conveys all necessary high-level information without wasted words.

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 no output schema and no annotations, the description covers the purpose, authentication, flow, and return values. It could mention edge cases or failure modes, but for a creation tool with a clear goal, it is reasonably complete.

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 descriptive property definitions, so the baseline is 3. The description adds minimal extra meaning beyond the schema (e.g., 'chosen kit' maps to kitProductSlug). No compensation needed.

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 a specific verb+resource: 'Creates a Swag Drop for the chosen kit, invites each employee by email, and returns the claim + HR dashboard links.' This uniquely identifies the tool's function and distinguishes it from siblings like request-quote or track-order.

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 clear context for use: 'turn new hires into welcome-kit claim links in one call' and 'HR/HRIS automation.' It doesn't explicitly mention alternatives or exclusions, but the context is strong enough to infer when this tool is applicable.

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