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

No annotations exist, so the description carries the full behavioral burden. It hints that a new check is executed (as opposed to a cached read), but says nothing about cost/quota consumption, expected latency for a scan-like operation, authentication needs, or whether repeated calls are safe.

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?

A single front-loaded sentence that states the action and the return payload with zero filler. Nothing could be removed without losing meaning.

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?

Minimally adequate for a two-parameter tool with no output schema: it names the returned fields (grade, score, findings). However, with no annotations and no output schema, it leaves cost, latency, and auth behavior entirely undisclosed.

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 100% and both parameters (domain, path with its default) are documented in the schema, so the baseline of 3 applies. The description adds no extra meaning beyond the schema, such as expected domain format or path handling rules.

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?

States a specific verb ('Run a fresh check'), names the resource (one site), and lists what comes back (grade, score, findings). The word 'fresh' implicitly distinguishes it from the stored-result reading that get_site presumably does, but no sibling is named explicitly.

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?

Usage is only implied: 'fresh' suggests using this when current results are needed rather than cached ones. It never states when to prefer get_site or list_sites, nor any prerequisite or exclusion, so the agent must infer the routing.

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