create_email_qrcode

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

With no annotations, the description must disclose behavioral traits. It states the QR code is 'static' and 'opens a prefilled email', which conveys basic behavior. However, it omits details like whether creation is reversible, permissions required, or what happens on error. Transparency is adequate but not thorough.

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 with no filler, achieving conciseness. It front-loads the key action and behavior. However, it could be slightly expanded to include critical usage hints without losing efficiency.

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 5 parameters (including optional ones) and no output schema, the description is too brief. It does not mention what the tool returns (e.g., a QR code ID or image URL), nor how the result is used. For a creation tool, agents need to know what output to expect.

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 low (20%—only 'style' has a description). The tool description does not elaborate on any parameter beyond the general purpose. Missing explanation for parameters like 'subject', 'body', and 'name' leaves ambiguity about their format or optionality.

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 specifies the verb 'Create' and the resource 'email QR code', and explains the behavior: 'static; opens a prefilled email when scanned'. This clearly distinguishes it from sibling tools like create_url_qrcode or create_phone_qrcode, which serve different purposes.

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 (e.g., create_url_qrcode for URLs). It lacks context about prerequisites, limitations, or when not to use it. The agent must infer usage from the name alone.

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