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obsbot_focus_manual

Set the focus motor position from near (0) to far (100) for OBSBOT Tiny 2 webcam, mapping the value to the device's focus range.

Instructions

Set the focus motor to position (0-100, near→far), mapped onto the device range.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cameraNo
positionNo
Behavior2/5

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

No annotations are provided, so the description must carry full behavioral disclosure. It mentions mapping onto the device range but does not state if the action is instant, reversible, or requires specific device state. No side effects or dependencies are noted.

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?

Single sentence, no filler, directly conveys the core action and range. Efficiently structured with no wasted words.

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

Completeness2/5

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

Despite low complexity (2 params, no output schema), the description omits clarification for the 'camera' parameter and lacks behavior details. Not sufficiently complete for an agent to use correctly without additional context.

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

Parameters2/5

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

Schema description coverage is 0%. The description only explains the 'position' parameter (range and mapping), but does not clarify the 'camera' parameter, which is a string with no format guidance. The agent may not know how to specify the camera.

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

Purpose5/5

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

The description clearly states the action (set), resource (focus motor), and range (0-100, near to far), distinguishing it from sibling tools like obsbot_focus_face which is presumably auto/manual focus.

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 on when to use this tool vs alternatives (e.g., obsbot_focus_face), no prerequisites or exclusions mentioned. The name implies manual control, but explicit advice is missing.

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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