move_device_left

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

With no annotations, the description must fully disclose behavior. It states the move action but fails to describe what happens on invalid indices, if the device cannot be moved further left, or any side effects. The agent lacks crucial behavioral details.

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 two sentences plus a parameter list. It is front-loaded with the action and includes no superfluous 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?

Given no output schema, the description should explain return value or success indication, but it does not. It also omits error scenarios. For a mutation tool, this leaves significant gaps in understanding the tool's full behavior.

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 description explicitly lists both parameters and provides clear semantic explanations ('track containing the device', 'device to move'), which adds value beyond the schema. However, it does not clarify index base (0 or 1) or valid ranges.

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 action: moving a device one position left in the device chain, with a specific verb and resource. It distinguishes from the sibling tool 'move_device_right' by the direction. However, it does not mention edge cases like when the device is already at the leftmost position.

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 gives minimal guidance on when to use this tool versus alternatives. It does not specify prerequisites (valid track and device indices) nor when not to use it (e.g., device already at leftmost). The sibling 'move_device_right' is implied but not explicitly contrasted.

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