Solo a group of tracks

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

Annotations show readOnlyHint: false and destructiveHint: false, but the description adds context: the tool mutes other tracks (non-destructive), explains why this implementation is reliable, and notes it's a rollback unit. This enriches the behavioral understanding beyond annotations.

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?

Three sentences: purpose, implementation note, reverse operation. No wasted words, front-loaded with action. Every sentence earns its place.

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 the tool's simplicity, the description covers the core behavior and context. However, it omits mention of output or return value, though an output schema exists. Minor gap for a reversible mute operation, but overall sufficient.

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 input schema already describes both parameters with examples (category: 'drums', 'vocals', etc.; tracks: indices or substrings). The description merely repeats 'Use category or explicit tracks,' adding no new meaning. With 100% schema coverage, 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?

The description clearly states 'Isolate a group so only it is audible' and specifies it mutes every other track. The verb 'isolate' plus resource 'group of tracks' is specific, and it distinguishes from sibling tools like fl_mute_tracks and fl_set_mixer_solo by focusing on group muting.

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?

Explicitly says to use category or explicit tracks, provides implementation detail (mute-the-rest) and reliability note, names reverse operation fl_clear_mute_solo, and mentions 'One rollback unit' for undo. This fully guides when and how to use vs. alternatives.

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