ebay_update_item_price_markdown_promotion

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

No annotations are provided. The description only states 'Update', implying mutation, but lacks details on prerequisites, side effects, error conditions, or what changes are applied. For a mutation tool without annotations, this is insufficient behavioral disclosure.

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, very concise and front-loaded. It provides the essential verb and resource. However, it could benefit from slightly more detail without becoming lengthy.

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 complexity of the 'promotion' object parameter and no output schema, the description is incomplete. It does not explain the structure of the promotion configuration or what the update returns. This leaves gaps for the agent.

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%, with basic descriptions for 'promotionId' and 'promotion'. The description adds no additional meaning beyond what the schema provides. Baseline score of 3 is appropriate.

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 verb 'Update' and the resource 'existing item price markdown promotion'. However, it does not differentiate from the similar sibling tool 'ebay_update_item_promotion', which could lead to confusion. The purpose is clear but lacks sibling distinction.

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 on when to use this tool versus alternatives like 'ebay_update_item_promotion' or other update tools. The description provides no context for selection among siblings.

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