devices

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

No annotations are provided, so the description must disclose behavior on its own. It reveals that the operation involves local cache and inspection, but it does not state whether this triggers a refresh or fetch, whether permissions are required, or what side effects, if any, exist.

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 short and free of filler, but it crams two distinct actions into one unpunctuated sentence with unexplained jargon. It is compact but not a model of clear front-loading.

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 zero-parameter tool with an output schema, the main missing piece is the core concept: what 'devices' means and how 'routes' and 'helper-profile expiry evidence' relate to it. Without that, an agent cannot confidently select or invoke the tool correctly.

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?

The input schema has zero parameters, so parameter documentation is not needed; schema coverage is trivially 100%. There are no parameter meanings for the description to clarify.

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 names two actions, 'List routes' and 'inspect local cached helper-profile expiry evidence,' but neither clearly maps to a 'devices' tool. It is not a tautology, but the resource and intended purpose are obscure, and it does not distinguish the tool from siblings like status or apps.

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 observe, act, status, apps, or control. The word 'freshly' hints at an on-demand refresh, but there is no explicit context, prerequisite, or exclusion.

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