get_qrcode_analytics

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

No annotations are provided, so the description carries the burden. It discloses the data returned but does not mention prerequisites (e.g., QR code must exist), error behavior, or side effects. The read-only nature is implied by 'Fetch' but not explicitly stated.

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 that clearly states the action and enumerates the analytics categories without unnecessary words.

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?

With no output schema and only 2 parameters, the description provides a good overview of what will be returned (the specific analytics metrics). It lacks details on response structure or error cases, but for a simple fetch tool, it is reasonably complete.

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 50%: the 'days' parameter is well-described, but 'id' lacks a description. The tool description mentions 'one QR code' which implies the 'id' parameter, but does not add detail for 'days' or format expectations. It provides minimal value beyond the schema.

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 uses the specific verb 'Fetch' and clearly identifies the resource as 'scan analytics for one QR code'. It enumerates the exact metrics returned (total scans, unique scanners, breakdown by country, device, hour), distinguishing it from sibling tools like get_qrcode or list_qrcodes.

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 clear context: use this tool when you need scan analytics for a specific QR code. It doesn't explicitly mention alternatives or exclusions, but the sibling tool list makes the differentiation obvious, and the description's specificity implies when it should be used.

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