create_fulfillment

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

No annotations are provided, so the description must carry the full burden. It mentions marking items as shipped and optional tracking, but does not disclose side effects like inventory changes, irreversibility, or notification behavior (though notify_customer parameter exists). Lacks depth.

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?

Single sentence, front-loaded with action and resource. No extraneous words. Efficient and clear.

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 5 parameters, 1 required, and no output schema, the description is minimal. Misses prerequisites (e.g., fulfillment orders must be in a fulfillable state), return value format, or confirmation of success. Could be more helpful.

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% (all parameters described). The description adds context about marking shipped and tracking info, but does not provide additional meaning beyond the schema descriptions.

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 it creates a fulfillment, marks items as shipped, and optionally adds tracking info. It uses specific verbs and resource, and is distinct from siblings like 'cancel_fulfillment' or 'update_fulfillment_tracking'.

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 when to use (to create a fulfillment after orders are ready), but does not explicitly state when not to use or compare with alternatives like 'list_fulfillments' or 'update_fulfillment_tracking'.

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