cdn_detect

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

The description lacks behavioral details such as error handling, rate limits, or permission requirements. With no annotations provided, the minimal description fails to disclose important aspects like what happens if the URL is invalid or if detection fails.

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 concise with two sentences: one for purpose and one for the parameter. It front-loads the core functionality, making it easy to scan.

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 presence of an output schema, the description does not need to explain return values. However, it omits context about error states, network requirements, or what constitutes a valid URL. Combined with no annotations, the description feels incomplete for a tool that makes external requests.

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 description adds meaning to the single parameter 'url' with an example URL, which is more informative than the schema's minimal 'Url' title. Since schema coverage is 0%, the description partially compensates, though it could detail acceptable formats or constraints.

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's purpose: 'Detect which CDN or reverse proxy is serving a website.' It specifies a specific verb ('Detect') and resource ('CDN or reverse proxy'), and is distinct from sibling tools that detect languages or text encoding.

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?

No usage guidelines are provided. The description does not indicate when to use this tool versus alternatives like http_client or dns_lookup, nor does it mention prerequisites or limitations.

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