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set_device_parameter

Set a specific parameter value on a device in Ableton Live by providing the track, device, parameter indices, and the desired value.

Instructions

Set a device parameter value.

Parameters:

  • track_index: The index of the track containing the device

  • device_index: The index of the device on the track

  • parameter_index: The index of the parameter to set

  • value: The new value for the parameter (will be clamped to valid range)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
valueYes
track_indexYes
device_indexYes
parameter_indexYes
Behavior2/5

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

With no annotations, the description must disclose behavioral traits. It mentions value clamping, but does not cover side effects, reversibility, required states, or error conditions. Significant gaps remain.

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 short and front-loaded with purpose, then lists parameters in a clear structured format. Every sentence adds value without redundancy.

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

Completeness3/5

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

Given 4 required parameters and no output schema, the description provides the basic purpose and parameter semantics but lacks information on return values, error handling, or necessary preconditions, leaving gaps for a complete understanding.

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

Parameters4/5

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

Schema coverage is 0%, so the description provides essential meaning for all four parameters, including that value 'will be clamped to valid range'. Descriptions are clear, though could specify index ranges or 0-based convention.

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 ('set') and the resource ('device parameter'), making it distinct from sibling tools like get_device_parameters or other set_* tools for different resources.

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?

No guidance is provided on when to use this tool vs alternatives, nor any prerequisites (e.g., device must exist, valid indices). The description only lists parameters without contextual usage advice.

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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