live12_rack_macro_control

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

No annotations are provided, so the description carries the full burden. It does not state that this is a mutating write, whether the target device must already be a Rack, what happens if the indices are out of range or the device isn't a Rack, or whether the change is undoable. Only the scope (16 macros, Rack-only) is disclosed.

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

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

A single well-formed sentence that front-loads the verb and scope with zero filler. It is efficient, though it is arguably too terse given the absence of annotations.

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

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

For a 4-required-parameter mutation with no annotations and no output schema, the description leaves notable gaps: no statement of mutation semantics, preconditions (device must be a Rack), or failure behavior. It is minimally adequate but not complete for a tool with zero structured behavioral metadata.

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

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

Schema coverage is 100%, so track_index, device_index, macro_index, and value are all documented with ranges and normalization. The description adds only the corroborating detail that there are 16 macros, matching the 0-15 range already in the schema. Baseline 3 is appropriate.

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

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

States a specific verb ('Controls') and resource ('one of the 16 macro controls on an Ableton Live 12 Rack device'), and enumerates the three Rack types it applies to. It distinguishes itself from generic device tools by scoping to Rack macros, though it never explicitly contrasts with the close sibling live12_rack_macro_config.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No when-to-use guidance, no prerequisites, and no mention of alternatives such as live12_device_set_parameter or live12_rack_macro_config. The agent must infer from the name alone whether this is the right tool versus the macro-config or variation-control siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.