ebay_update_bidding_strategy

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

The description is consistent with readOnlyHint=false, so there is no annotation contradiction. However, it adds no behavioral context beyond the word 'update': it does not disclose whether the strategy is replaced partially or fully, what side effects may occur, whether certain fields are required conditionally, or any API-specific constraints. With only a false readOnly hint, the description carries more burden than this sentence carries.

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 front-loaded sentence with no obvious filler. It is appropriately short for the tool's simplicity, though 'through the eBay Marketing API' adds little. It earns a 4 for conciseness but not a 5 because the brevity leaves important behavioral and usage context unstated.

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 nested request body, no output schema, and many sibling bidding/campaign tools, the description is not complete enough for reliable invocation. It does not explain valid biddingStrategy values, the meaning or format of bidPercentage, or whether the update has any prerequisites or consequences. An agent could infer the endpoint's purpose but not confidently know how or when to use it correctly.

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%, so the baseline is 3 even though the description adds no parameter-level meaning. The schema documents campaignId and the request object, but the nested bidPercentage and biddingStrategy fields lack value-domain explanations, and the description does not compensate for that. The description adds no practical meaning beyond what the schema already exposes.

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 a specific action ('Update bidding strategy') on a specific resource, and identifies the API domain ('eBay Marketing API'). It reads as clear and actionable rather than vague, and it is sufficiently distinct from related siblings like ebay_update_ad_rate_strategy and ebay_update_bid. It does not explicitly call out sibling differentiation, so it stops short of a 5.

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?

There is no guidance about when to use this tool versus alternatives such as ebay_update_bid, ebay_update_ad_rate_strategy, or ebay_update_campaign_budget. No context, prerequisites, or exclusions are provided. The only usage signal is implied by the verb 'update,' which is not enough guidance.

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