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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does state 'No disk access,' which is a useful non-side-effect guarantee, but it does not define what 'safe' means, what the return value looks like, or whether the path must exist. The wide schema also leaves uncertainty about which inputs are actually used.

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?

Two sentences with no filler, and the key 'No disk access' constraint is front-loaded. This is appropriately concise for a simple checker, though it sacrifices detail needed for full clarity.

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 has nine parameters, no output schema, and no annotations, leaving the description as the only context source. One sentence about path safety and no-disk-access is insufficient to explain the broad schema, expected return type, or safety criteria, so the definition is not complete enough for confident invocation.

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%, so the baseline is 3. The description adds no parameter-level detail beyond the schema; the 'path' property is already described as 'File path to check.' The many unrelated optional parameters could confuse an agent about which field to populate, and the description does not help disambiguate.

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 and resource: 'Check whether a path looks safe,' and it adds a distinguishing behavioral trait with 'No disk access.' This clearly differentiates it from sibling URL/title checkers, though the broad input schema with nine unrelated parameters slightly muddies the exact scope.

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 tool versus alternatives like browser-url-ok or wiki-title-ok. The only contextual hint is 'No disk access,' which implies a lightweight validation use, but no explicit conditions, prerequisites, or exclusions are given.

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