ebay_get_fulfillment_policies

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It mentions required OAuth scopes, indicating authentication needs. However, it does not state that this is a read-only operation (implicit from 'get'), nor does it describe the return format, pagination, or any side effects. Given the lack of annotations, more context is needed.

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 concise with two short sentences. It front-loads the purpose and then provides OAuth details. While the OAuth info could be structured separately, it does not waste words. Score 4 for efficiency.

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 tool's simplicity (one parameter, no output schema, no annotations), the description is incomplete. It does not explain that the tool returns a list of fulfillment policies, what the response structure might be, or any limitations. The OAuth scope is useful but not sufficient for complete understanding.

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% (the parameter already has a description). The tool description adds no additional meaning beyond repeating 'Required OAuth Scope' and the marketplace ID enum values. Baseline of 3 is appropriate since the schema does the heavy lifting.

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 states 'Get fulfillment policies for the seller' which clearly indicates the action and resource. However, it does not differentiate from sibling tools like 'ebay_get_fulfillment_policy' (singular) or 'ebay_get_fulfillment_policy_by_name', both of which suggest fetching specific policies versus listing all. The phrase 'fulfillment policies' is plural, implying a list, but this is not explicit.

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 does not mention scenarios, prerequisites, or that it retrieves all policies rather than a specific one. The OAuth scope requirement is stated but does not help with usage context.

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