Fl Mixer Effect

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

With no annotations provided, the description carries the full burden. It discloses the dual read/write nature (listing vs. editing mix, mute, color, focus window) and hints at a UI side effect ('focus its window'). It doesn't detail validation behavior, range clamping, or other side effects, but the core behavior is adequately surfaced.

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?

The description is a single, compact sentence that efficiently packs the dual-mode behavior, parameter list, and range constraints. It avoids fluff and front-loads the primary action (list vs. edit), making it easy to parse quickly.

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?

Given that an output schema exists (relieving the need to describe return values) and the dual-mode behavior is explained, the description is reasonably complete. However, it doesn't address potential ambiguities like what happens when both slot and mix are provided, or whether slot omission with other edit parameters triggers an error, leaving some edge cases unexplained.

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?

The schema has 0% description coverage, so the tool description must carry parameter semantics. It covers all six parameters: track (implied by 'a track's'), slot ('omit slot' triggers list mode), mix (range 0-1), mute, color ('slot colour'), and focus ('focus its window'). The mix range and slot mode semantics add meaningful value beyond the bare 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?

The description clearly states the tool's dual purpose: listing a track's effect slots or editing one (mix, mute, color, focus). The verb is explicit ('List' / 'edit') and the resource ('a track's effect slots') is specific, distinguishing it reasonably from sibling mixer tools like fl_mixer_track_set, fl_mixer_send, or fl_mixer_eq.

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?

The description implies usage patterns ('omit slot' to list vs. edit one), giving some operational guidance. However, it doesn't explicitly state when to prefer this tool over sibling mixer-related tools (e.g., fl_mixer_track_set for track-wide settings), nor does it mention prerequisites or invalid parameter combinations.

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