paths

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

With no annotations, the description carries the full burden of behavioral disclosure. It does add useful processing context: prepending is resolved, and results include collapsed paths with prepend counts. However, it does not state whether this is read-only, how results are bounded, what the output format is, or any caveats about the data.

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 one dense sentence with no filler, and the primary scope ('for a prefix') is front-loaded. It earns its place but is slightly cryptic because of heavy domain jargon and compressed phrasing.

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 three parameters, no output schema, no annotations, and a large sibling set, this description is not complete enough for reliable invocation. It omits semantics for start/end, expected return structure, and usage context. The existence of many related tools increases the need for clearer guidance.

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 0%, so the description must compensate. It clarifies that prefix is the core input, but it says nothing about the start and end parameters, leaving their meaning ambiguous. The two optional parameters are completely undocumented in both the schema and the description.

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 identifies a specific resource (a prefix) and a concrete output concept (transit structure with immediate upstreams, their share, and top paths with collapsed_path / prepend_count). This is much more informative than a tautology. However, it lacks an explicit verb like 'returns' or 'lists', and it does not clearly distinguish itself from sibling tools such as path_diversity or origin_history.

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, and no alternative sibling tool is mentioned. The phrase 'for a prefix with prepending resolved' implies a niche use case, but an agent selecting among 18 sibling tools gets no explicit decision rule.

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