control_service

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

With no annotations, the description carries the burden of behavioral disclosure. It does make the mutating nature explicit ('start, stop, or restart') and notes a precondition about command control. However, it does not mention permissions, reversibility, side effects, or what happens if command control is not enabled.

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 a single concise sentence with no filler. The core action is front-loaded and the enabling-condition is included without bloating the text.

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 mutating control tool with no annotations and three required parameters, the description is too sparse. It omits how command control is enabled, whether elevated privileges are needed, what happens on failure, and how the device parameter influences the operation. The output schema may cover return values, but preconditions and operational context are missing.

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 adds meaning for 'service' as the target and for the action values via the verbs, but it does not explain the 'device' parameter, its allowed values, or how services are named or resolved on each device.

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 function: start, stop, or restart a systemd service. It names the resource type and the specific actions, distinguishing it from sibling read-only tools like get_service_status and get_service_logs.

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 guidance is given about when to use this tool versus alternatives such as run_command or get_service_status. The prerequisite 'after command control is explicitly enabled' is mentioned but not explained, and no exclusions or alternative tool routing are provided.

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