Create Horizons Website

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 only states that it creates a website using Horizons, but does not mention side effects, prerequisites, return behavior, or whether the operation is asynchronous. For a creation tool, this is a significant gap.

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, clear sentence that is front-loaded with the action and resource. It contains no unnecessary words or repetition, making it highly concise and well-structured.

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 is simple with one parameter and no output schema, but the description provides minimal context. It does not explain what happens after creation, what the response contains, or how to retrieve the created website (e.g., via horizons_get_website). This leaves the agent without enough information to handle the tool's outcome 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?

The input schema already provides full coverage for the single parameter 'prompt' with a clear description. The tool description adds no additional parameter semantics beyond what the schema states, so the baseline of 3 applies.

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 a specific verb 'Create' and resource 'new website', and distinguishes this tool from other website creation tools by specifying 'using Hostinger Horizons (AI website builder)'. This clearly differentiates it from siblings like hosting_websites_create and agency_website_provision.

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 usage by mentioning 'Hostinger Horizons (AI website builder)', indicating this is for AI-generated sites. However, it does not explicitly state when to use this tool versus alternatives or provide any exclusions. The guidance is implied rather than stated.

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