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This server has significant definition quality gaps. While all 11 tools have names starting with action verbs (get_, set_, activate_, flash, disco), descriptions are present but often generic and lack LLM-optimization guidance. Most critically, parameter descriptions are minimal or absent, many parameters lack any explanation of valid ranges, formats, or dependencies. Input schemas exist but are incomplete: several tools lack descriptions for their parameters (e.g., 'effectType' in set_effect has no description of valid values like 'colorloop' or 'none'). Output schemas are not documented. Error handling is minimal, responses are generic success/error with no recovery guidance. The server does not follow the chat-data-model pattern: it requires opaque light IDs and group IDs rather than accepting human-friendly names. No tool annotations (readOnlyHint, destructiveHint) are present despite clear read vs. write distinctions.
Activate a predefined Hue scene
Start a disco effect on a light with rapid color changes
Flash a light with a specific color for a specified number of times
Retrieve list of all Hue light groups with their state and member lights
Retrieve list of all available Hue lights with their current state
Retrieve list of all available Hue scenes
Set the brightness of a light (0-100 scale)
Parameter descriptions missing or incomplete. 'effectType' in set_effect has no description of valid values ('colorloop', 'none'). 'scene' and 'group' parameters lack any guidance on how to obtain valid IDs. LLMs cannot infer valid inputs without explicit descriptions.
No output schemas documented. Tools return success/error responses but LLMs have no visibility into the structure of returned data (e.g., what fields are in the lights array, what metadata is included). This prevents downstream tool chaining and forces LLMs to guess.
No tool annotations (readOnlyHint, destructiveHint). Tools like set_color, flash, set_brightness are clearly destructive (modify state) but lack annotations. Agents cannot distinguish safe read-only tools from risky write operations without explicit hints.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | F | 38 | 2026-07-28+ | v2 |
Set the color of a specific light using RGB values
Set a light effect (e.g., colorloop, none)
Set the state of a group of lights (color, brightness, temperature, effect)
Set the color temperature of a light in Kelvin (2000-6500K)
Requires opaque IDs (lightId, group, scene) instead of accepting human-friendly names. Users say 'turn on the living room light', not 'set light 5 to on'. Tool forces extra lookup calls and mismatches the chat data model.
Error handling is generic. Responses are bare success/error with no recovery guidance. 'Failed to set light color' tells the LLM nothing about why it failed or what to try next. No categorization of retryable vs. user-fixable errors.