ebay_create_fulfillment_policy

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It only states the purpose and OAuth scope, omitting details on side effects, reversibility, rate limits, or any other behavioral traits of the creation 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 description is extremely concise, using two short sentences to convey the core purpose and required scope. It avoids any extraneous information, and the important information 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?

Given the complex nested input schema and the lack of an output schema, the description is insufficient. It does not explain return values, default behaviors, or prerequisites beyond OAuth scope. Minimal guidance for a creation tool with many optional fields.

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 the main policy parameter ('Fulfillment policy details'), but the description does not add explanatory value beyond what the schema's property names imply. For nested properties, no additional semantics are provided. Baseline 3 is appropriate given high schema coverage.

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 explicitly states 'Create a new fulfillment policy', clearly indicating the verb (create) and resource (fulfillment policy). This distinguishes it from sibling tools like ebay_update_fulfillment_policy and ebay_get_fulfillment_policy.

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. It only mentions required OAuth scope but does not specify scenarios or exclusions, leaving the agent without decision support.

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