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Glama

setup_three_point_lighting

Creates key, fill, and rim area lights aimed at a target object for a balanced three-point lighting setup. Adjust distance, height, intensity ratios, and color temperature.

Instructions

围绕目标布 Key/Fill/Rim 三盏面光并对准它;color_temp 为开尔文色温。

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
heightNo
targetYes
distanceNo
rim_ratioNo
color_tempNo
fill_ratioNo
key_energyNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.2/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states it sets up lights and aims them, but does not mention whether it creates new lights, replaces existing ones, or what happens to the current scene lighting. For a mutation tool, this lack of side-effect disclosure is a significant gap.

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 a single sentence that front-loads the core purpose. It is concise and wastes no words, though it lacks structured formatting or elaboration on the parameters. The brevity is good, but it sacrifices necessary detail.

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?

Given 7 parameters, no output schema, and no annotations, the description is far from complete. It does not cover parameter semantics, return values, or side effects. For a complex lighting setup tool, an agent would need much more guidance to call it correctly with the right values.

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?

The schema has 0% description coverage, so the description must explain all parameters. It only explains color_temp (as Kelvin color temperature). Other parameters like height, distance, rim_ratio, fill_ratio, and key_energy are left undefined in both schema and description, leaving the agent guessing about units, ranges, and meanings.

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 (setup) and the resource (Key/Fill/Rim three area lights) and that it aims them at a target. It is distinct from siblings like create_light (single light) or set_light (modify existing), leaving no ambiguity about what this tool accomplishes.

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

Usage Guidelines3/5

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

The description implies usage for standard three-point lighting but does not explicitly state when to use it over alternatives (e.g., setup_studio_scene or manual light creation). No exclusions or alternative recommendations are given, leaving the agent to infer the appropriate context from the name and description.

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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