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

With no annotations provided, the description discloses key behaviors: section structure, velocity multipliers, and instrumentation per section. It states it transforms loop-based arrangements and returns sections created and energy profile. It does not mention whether it overwrites existing data or requires specific permissions, but the core transformation is well-described.

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 well-structured: purpose statement, section breakdown, parameter explanations, examples. It is front-loaded with essential info and each sentence adds value. No redundancy.

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 complexity (9 params, no schema descriptions, no annotations), the description covers the main concepts and parameters. It explains the section energy progression, parameter usage, and return values. However, it lacks explanation for track indices and unit_index, which are needed for full integration.

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 0%, so the description must explain parameters. It does well for genre, section_lengths, bpm, and root with examples and defaults. However, it does not explain bass_track, drum_track, harmony_track, melody_track, or unit_index, leaving 5 of 9 parameters undocumented.

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 creates a multi-section electronic track with defined sections (intro, buildup, drop, breakdown, outro). It specifies the action ('transforms loop-based arrangements into song structure') and distinguishes from siblings by limiting to electronic genres.

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 includes usage context: 'For electronic genres only' and lists allowed genres. It provides examples with different section_lengths. However, it does not explicitly compare with sibling genre-specific arrangement tools (e.g., create_dnb_arrangement) or state when to use this generic vs. specific tool.

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