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bbernstein

LacyLights MCP Server

by bbernstein

bulk_update_look_board_buttons

Update multiple LacyLights look board buttons in one call, changing labels, colors, positions, and sizes to revise theatrical lighting layouts.

Instructions

Update multiple buttons in a single operation.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
buttonsYesArray of button updates to apply

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv1.7.0

TDQS

C2.9/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. 'Update' implies mutation but nothing is said about whether the batch is atomic, what happens on partial failure, whether fields are merged or replaced, or what permissions are needed. For a bulk write tool this 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?

A single front-loaded sentence with zero waste. It is efficient, though the terseness contributes to the overall under-specification of a mutating batch operation.

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?

For a batch mutation tool with no annotations and no output schema, the description is too thin. It omits atomicity, partial-failure behavior, and result reporting, which an agent needs before invoking a bulk write.

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

Parameters3/5

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

Schema description coverage is 100% and the array items are self-documenting (buttonId required, plus color/label/width/height/layoutX/layoutY), so the schema does the heavy lifting. The description adds no meaning about how updates are applied per item, so baseline 3 is appropriate.

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

Purpose4/5

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

States a clear verb (Update) and resource (multiple buttons) with a batch scope qualifier. It implicitly distinguishes itself from the singular update_look_board_button and from the create/delete bulk siblings, but never names them explicitly.

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?

Provides no when-to-use guidance, no prerequisites, and no mention of alternatives such as update_look_board_button for single edits or update_look_board_button_positions for layout-only changes. Usage is only implied by the word 'multiple'.

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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