fingerprint_url

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

No annotations are provided, so the description bears full burden. It describes the expected return (technologies, headers, server info) but does not disclose behavioral traits such as safety, destructiveness, rate limits, or authentication needs. The description is adequate 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 extremely concise with two sentences plus a structured Args/Returns section. Every sentence adds value, and the main purpose is front-loaded. There is no extraneous information.

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 simplicity (one parameter, clear purpose) and the existence of an output schema, the description provides sufficient context: what it does, what input it needs, and what it returns. It could be slightly more detailed about usage scenarios, but overall it is complete enough for an agent to understand and invoke the tool.

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 has 0% description coverage, but the description adds a clear description of the 'url' parameter ('Target URL to fingerprint'). This provides meaningful context beyond the bare schema, helping the agent understand the parameter's purpose.

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 a specific verb 'fingerprint' and clearly states the resource (URL) and purpose (detect technologies, frameworks, CMS). It distinguishes itself from siblings like fingerprint_headers and fingerprint_waf by specifying the broader scope of technology detection.

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 (when you need to fingerprint a URL for technology detection) but does not explicitly state when to use or avoid, nor does it mention alternatives. It provides no exclusions or context about prerequisites.

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