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obsbot_zoom_vendor

Set the camera zoom ratio (1.0–2.0) with adjustable speed (0=default, 1–10, 255=max) for precise framing.

Instructions

Vendor zoom path with adjustable speed: zoom to a ratio at a chosen speed. This tool's ratio scale differs from obsbot_zoom_uvc's and may not land exactly on the requested target. ratio is clamped to [1.0,2.0]; speed 0=device default, 1-10 slow→fast, 255=maximum.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
ratioYes
speedNo
cameraNo
Behavior4/5

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

With no annotations, the description carries the full burden. It reveals that the ratio is clamped, speed has special values, and landing may not be exact. This offers good insight into tool behavior, though it does not disclose whether the operation is safe or requires authorization.

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

Conciseness4/5

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

The description is concise, consisting of two sentences that front-load the main purpose and then add differentiation and parameter details. It avoids unnecessary words, though a more structured format could improve readability.

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?

For a tool with 3 parameters, no output schema, and no annotations, the description covers the main purpose, parameter ranges, and differentiation from siblings. However, it omits the camera parameter entirely and does not mention return values or error conditions, leaving some context incomplete.

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%, so the description should fully compensate. It explains ratio and speed semantics (clamping, range, special values) but provides no explanation for the 'camera' parameter, leaving its purpose unclear.

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 tool's purpose: it zooms to a ratio at a chosen speed on a vendor zoom path. It distinguishes itself from the sibling tool obsbot_zoom_uvc by noting a different ratio scale and potential inexact landing.

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

Usage Guidelines4/5

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

The description provides guidance on when to use this tool versus obsbot_zoom_uvc, noting the scale difference and inexact landing. It also gives specific ranges for ratio and speed parameters. However, it does not specify prerequisites or when not to use the tool.

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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