device

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

No annotations are provided, so the description must fully disclose behavioral traits. It mentions 'load browser/desktop/store tools on demand' for module actions, hinting at side effects, but does not describe the mutability of device settings, persistence, required permissions, or potential destructive consequences. This is a significant gap for a tool with mutation-like actions (set, set_target).

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 extremely concise with only two sentences. It front-loads the main purpose and efficiently groups actions. Every part serves a purpose with no redundant or wasted words.

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 6 parameters, no output schema, and moderate complexity. The description provides a high-level overview but lacks detail on how actions relate to parameters (e.g., which parameters are required for each action). The agent must rely heavily on the schema descriptions (83% coverage), but the description could be more helpful by linking actions to their required inputs.

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 high (83%), so the baseline is 3. The description adds context for module actions ('load on demand') but does not elaborate on other parameters (deviceId, platform, target, category) beyond what the schema already provides. It offers marginal value.

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 clearly states the tool's purpose: 'Device management + module loading.' It explicitly lists the actions grouped into two categories (device operations: list/set/set_target/get_target; module operations: enable_module/disable_module/list_modules). This distinguishes the tool from sibling tools (app, flow, etc.) which likely handle other domains.

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?

The description implies usage by stating the actions available, but provides no explicit guidance on when to use this tool versus alternatives, nor any conditions or prerequisites. It does not mention when not to use it or compare with sibling tools, so the guidance is only implied.

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