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

No annotations are provided, so the description carries the full disclosure burden, and it discloses very little: "Runs the same code the tool page runs" hints at parity with the web UI but says nothing about what the result contains (tech names, versions, confidence), rate limits, or whether the target is actively probed. For a network-touching check, that leaves the agent guessing about behavior and cost.

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?

It is short, but the brevity comes from under-specification rather than efficiency. The first sentence is front-loaded usefully; "Scope: check" is internal filler that earns no place in the description.

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?

With no annotations, no output schema, and no statement of what a "fingerprint" returns, an agent cannot predict the response shape or decide how this differs from check_cms or check_schema. Given the crowded sibling set, the definition is too thin to support correct selection.

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?

There is a single required parameter, and the schema already documents it at 100% coverage ("Full URL including scheme"). The description adds nothing about the URL — no notes on redirect handling, scheme requirements beyond the schema, or whether subpaths matter — so the baseline 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?

"Technology fingerprint" does name the resource being inspected, but it is a noun phrase rather than a clear verb+resource statement, and it never says it takes a URL and identifies the tech stack behind it. Among ~40 sibling check_* tools the subject matter does distinguish it, but the phrasing is terse enough that an agent gets only the gist.

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?

There is no guidance on when to use this versus siblings like check_cms, check_schema, or check_seo_audit, which overlap heavily with technology detection. "Scope: check" is not a usage rule — it restates the tool-name prefix rather than defining selection criteria or exclusions.

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