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Server has 5 well-structured tools with complete input schemas and descriptions. Tool names follow verb_noun pattern (list, get, set, turn_on, turn_off). Descriptions are substantive (100-200 chars), explaining WHAT and WHEN. However, parameter descriptions lack detail on constraints (e.g., hue/saturation/brightness ranges stated as 0.0-1.0 but no guidance on what these mean to users). Output schemas are not documented, LLMs cannot predict response structure. Error handling is minimal; no recovery guidance. Color parameters use nested objects but lack examples or validation hints. Overall solid foundation but missing output documentation and constraint clarity.
Get the current state of one or more LIFX lights, including their colors, whether they're on or off, and what groups and locations they belong to (if any).
List all Lifx lights currently available on the user's local area network (LAN).Each light is specified by a unique string label.Use this to get which lights the user wants to interact with, as the label is used in other tools to interact with lights.Also includes additional information about the light, such as group and location
Set the color of one or more Lifx lights. Must specify hue, saturation, brightness, and may optionally specify kelvin temperature (otherwise 3500 is used).
Turn off one or more Lifx lights.
Turn on one or more Lifx lights, optionally at specific color.
Output schemas not documented. LLMs cannot predict what fields are returned (e.g., does list_lights return group, location, brightness, color?). This forces agents to guess or make extra calls.
Color parameter constraints lack clarity. Hue/saturation/brightness described as 0.0-1.0 but no explanation of what these values mean (e.g., is 0.5 hue red, green, or blue?). Kelvin range stated (1500-9000) but no guidance on typical values or defaults.
No error handling guidance. If a light label is invalid or unreachable, what error is returned? How should the agent recover? No recovery hints provided.
Inferred effective spec: <=2025-11-25.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | C | 60 | <=2025-11-25 | v2 |
Optional color parameters in turn_on_lights lack dependency documentation. Description says 'if not existing light color is used' but does not clarify: if hue is provided but saturation is omitted, what happens? Are all color fields required together or independently optional?
No pagination or result limits documented. list_lights returns 'all Lifx lights', if a user has 500 lights, does the response include all? No limit or pagination guidance provided.