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Anjos2

mcp-android-emulator

by Anjos2

force_stop

Force stop an Android app by specifying its package name. Terminates the app process directly to resolve issues or clear its state.

Instructions

Force stop an application

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
packageYesPackage name of the app
Behavior2/5

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

With no annotations, the description carries the full burden of disclosure. 'Force stop' implies abrupt termination but does not mention whether app data is preserved, what side effects occur, or any prerequisites. This is minimal behavioral transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise at five words, with every word contributing meaning. There is no redundancy or irrelevant information, making it highly efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description is adequate for a simple one-parameter tool with complete schema coverage, but lacks usage context and side-effect details. It is minimally viable but leaves gaps in guidance and behavioral disclosure.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% coverage, already describing the package parameter with a clear definition. The description adds no additional semantic value beyond the schema, so the baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action (force stop) and the resource (an application). It is distinct from siblings like launch_app and clear_app_data, but does not explicitly contrast with them.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives such as clear_app_data or launch_app. The description only states what it does, not when it should be used.

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

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