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

With no annotations provided, the description carries the full behavioral disclosure burden. It usefully reveals that no disk access occurs, which is an important safety trait. However, it leaves 'safe' undefined and says nothing about the response shape or what kinds of path hazards are checked.

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 short sentences, front-loaded with the core action and an immediately useful safety qualifier. There is no redundant or filler text.

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?

For a tool with nine optional parameters, no annotations, and no output schema, this one-line description is incomplete. An agent cannot tell what 'safe' means, what result is returned, or whether only the path parameter is relevant to this tool. More guidance is needed for reliable 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 schema already documents all nine optional parameters, including 'File path to check.' The description adds no parameter-level meaning beyond the schema and does not explain why unrelated parameters like url, city, feed, and query are present.

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 adds the useful qualifier 'No disk access.' It is clear, but it does not explicitly differentiate itself from sibling tools like wiki-title-ok or browser-url-ok, so it stops short of a 5.

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 when-to-use or when-not-to-use guidance is provided. The 'No disk access' phrase hints that this is a lightweight syntactic check, but the description never names an alternative tool or gives conditions that should route an agent elsewhere.

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