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

With no annotations, the description carries the burden. It does disclose a critical behavior: the widget is created as a disabled draft, not live until manually enabled by a human. This is valuable. However, it doesn't disclose potential side effects like whether creating a draft counts against limits, if any content is validated, or what happens on failure. It adds some context but not comprehensive.

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, two sentences, and front-loaded with the core purpose and the key behavioral constraint (disabled draft). It uses clear, direct language without unnecessary filler. Slightly more could be added about parameters, but it is efficient for its length.

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 tool's moderate complexity (5 params, 3 required), the description covers the main purpose and the critical draft behavior. However, it lacks guidance on required parameters (name, widget_type, headline) and how they relate to the widget's purpose. Without an output schema, it also doesn't explain return values. Enough for a basic call but with clarity gaps.

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 0%, so the description must compensate. The description mentions 'widget_type' implicitly by listing types, but does not explain other parameters like 'name', 'headline', 'body', or 'button_text'. The schema provides structure but no semantics. The description adds some context about widget types but leaves other parameters' purpose unclear.

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 creates a website growth widget and lists specific widget types (popup, slide-in, bar, embed box). It distinguishes it from siblings by focusing on widget creation rather than flows or landing pages, though it doesn't explicitly name a sibling to differentiate from.

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 implies its use case (signup popups, announcement bars, embedded capture boxes) which helps an agent understand when to use it. However, it doesn't explicitly state when not to use it or mention alternatives like create_landing_page or create_flow. The guidance is implied but not fully explicit.

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