botindex_commerce_compare

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions ranking, trust scores, fees, and checkout details, which adds some context about output behavior. However, it lacks critical details such as rate limits, authentication requirements, error handling, or whether the operation is read-only or has side effects. The cost hint ('$0.05') is useful but insufficient for comprehensive transparency.

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 and front-loaded, stating the core functionality in a single sentence. The cost hint is included efficiently. However, it could be slightly more structured by separating functional details from metadata, but overall, it avoids unnecessary verbosity and earns its place.

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 comparing merchant offers across protocols and the lack of annotations and output schema, the description is incomplete. It mentions output elements like ranking and trust scores but does not detail the return format, error cases, or operational constraints. For a tool with 4 parameters and no structured output information, more context is needed to guide the agent effectively.

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 schema already documents all parameters thoroughly. The description does not add any additional meaning or context beyond what the schema provides (e.g., it doesn't explain how 'q' relates to merchant offers or how 'protocol' affects results). With high schema coverage, the baseline score of 3 is appropriate, as the description doesn't compensate but also doesn't detract.

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 tool's purpose: comparing merchant offers across specific commerce protocols (ACP, UCP, x402) with ranking, trust scores, fees, and checkout details. It uses specific verbs ('compare', 'ranked') and identifies the resource ('merchant offers'), but does not explicitly differentiate from sibling tools like 'botindex_commerce_protocols' or 'agorion_discover', which might have overlapping commerce-related functions.

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 mentions comparing offers across protocols but does not specify use cases, prerequisites, or exclusions. Sibling tools like 'botindex_commerce_protocols' might be related, but no explicit comparison or context is given, leaving the agent to infer usage.

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