live12_track_set_properties

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

With no annotations, the description carries the full behavioral burden. It implies mutation and that the track must already exist, but says nothing about whether changes are undoable, what happens on an out-of-range track_index, whether the Live set must be connected, or what a successful call returns.

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?

One sentence, front-loaded with the verb and resource, then the property list. No filler, though the enumerated fields duplicate the schema rather than adding routing information.

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 mutation tool with no annotations and no output schema, the description should at least note error behavior and result shape. It covers the what but leaves the agent guessing on failure modes and return value.

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 description coverage is 100%, so all six parameters and their formats (including the RGB integer example) are already documented. The description only restates the field list, adding no format or constraint information beyond the schema.

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?

Specific verb+resource ("Updates properties of an existing track in Ableton Live 12") with the affected fields enumerated. It is clearly distinct from create/delete/duplicate siblings but does not distinguish itself from live12_mixer_set or live12_lom_set, which could plausibly touch the same fields.

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 statement of when to use this tool versus alternatives such as live12_mixer_set, live12_lom_set, or live12_track_duplicate. The only implied context is "existing track," which the agent must infer as a precondition.

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