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

No annotations are provided, so the description carries the full burden. It simply restates the tool's name and function without disclosing that uninstalling permanently removes the app and its data, or that it may fail on system apps. For a destructive mutation, this lack of side-effect disclosure is a significant gap.

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?

A single sentence with no wasted words. The verb 'uninstall' is front-loaded, and all essential scope (Android device, package name) is included. This is an ideal level of conciseness for a simple operation.

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 is simple (2 parameters, no nested objects, no output schema), so the description is nearly sufficient for an agent to invoke it. However, it omits safety context (permanent data loss, irreversibility) and mentions no behavior on errors (e.g., app not found). Given no annotations and no output schema, a few more words about side effects would make it contextually complete.

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 both udid and packageName clearly. The description's phrase 'by package name' merely echoes the schema's property description and adds no new meaning about format, validation, or relationships between parameters. Baseline 3 is appropriate.

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 uses a specific verb ('uninstall'), a clear resource ('app'), and platform ('Android device'), with the method ('by package name'). This clearly distinguishes it from siblings like ios_uninstall_app, device_terminate_app, and device_clear_app_data. No ambiguity about what the tool does.

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 provides no guidance on when to choose this tool over alternatives such as device_terminate_app, device_clear_app_data, or app_delete. It does not mention prerequisites like the app being installed or how it differs from app_delete. The only hint is 'by package name,' which implies a prior lookup but does not explicitly direct the agent.

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