compare_markets

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

With no annotations, the description carries the full burden of behavioral disclosure, but it only says the tool 'compares' and 'gives AI analysis.' It does not reveal whether the operation is read-only, how location affects behavior, what the output structure is, or any side effects. This is insufficient for a tool with no other behavioral metadata.

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 extremely short (a single sentence) and contains no fluff, but it is under-specified. It communicates the core action yet lacks the detail needed to be genuinely helpful. This is not mere conciseness but a sparse specification that fails to earn a higher score.

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?

The tool has no output schema, no annotations, and several overlapping siblings. The description does not explain the nature of the 'AI analysis,' the expected return format, or how coordinates are used. This is insufficient for an agent to select and invoke the tool correctly in a broader context.

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 input schema provides full descriptions for all three parameters, so the description adds no additional parameter-level semantics. The schema already explains keywords, latitude, and longitude, meeting the baseline score of 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 states the action ('compares') and resource ('markets') but is vague about what 'markets' refers to and does not differentiate this tool from siblings like compare_prices or get_ai_recommendations. The mention of 'AI analysis' adds some distinction, but it is not specific enough to fully clarify the purpose.

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 on when to use this tool versus alternatives such as compare_prices or find_cheapest. The description lacks any context about prerequisites, typical use cases, or what makes this tool preferable.

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