ebay_update_fulfillment_policy

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

There are no annotations, and the description does not disclose any behavioral traits such as idempotency, permission requirements, or side effects. It only states the action, which is insufficient for understanding the tool's behavior. Score is 2 due to lack of information.

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 a single sentence, which is concise and front-loaded. However, it lacks necessary detail, making it too minimal. It is not overly verbose, but it could be improved. Score 3 reflects adequate conciseness but insufficient content.

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 complexity (nested objects, many fields, no output schema), the description is too brief. It does not explain return values or any complex behaviors. The context signals indicate a complex tool, and the description does not compensate for that. Score is 2.

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 schema has 100% coverage with descriptions for all properties. The tool description adds no extra meaning beyond what is in the schema. According to the rules, when schema coverage is high (>80%), baseline is 3. The description does not improve or contradict the schema, so score 3.

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 the action 'Update' and the resource 'existing fulfillment policy'. It is specific but does not differentiate from sibling tools like 'ebay_create_fulfillment_policy' or 'ebay_get_fulfillment_policy'. The verb and resource are clear, so it scores 4.

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?

No guidance is provided on when to use this tool versus alternatives. For example, when should one update an existing policy instead of creating a new one? The description lacks context for decision-making, so it scores 2.

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