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Poll a change group

qsys_poll_change_group

Poll a change group to get controls that changed since last poll. Monitor dynamic state updates in Q-SYS audio/video systems.

Instructions

Poll a change group; returns the controls that changed since the last poll (ChangeGroup.Poll).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesChange group id
Behavior3/5

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

No annotations are provided, so the description carries the burden. It states the tool returns changed controls since last poll, implying a non-destructive read. However, it does not disclose error handling or any potential side effects.

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

Conciseness5/5

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

The description is a single sentence with no unnecessary words. It is front-loaded and efficient, earning its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (one parameter, no output schema, no nested objects), the description is mostly complete. It explains the return value. Minor gap: no mention of error conditions or prerequisites.

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?

The single parameter 'id' is described in the schema as 'Change group id'. The description adds no additional semantic meaning beyond the schema, which already fully covers it (100% coverage).

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 polls a change group and returns changed controls. It distinguishes from siblings like create/destroy/connect by specifying polling behavior.

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 when to use (to get updates from a change group) but does not explicitly mention alternatives or when not to use. The context is clear enough but lacks explicit guidance.

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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