analyze_render_dir

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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is clear. The description adds context that this is a read-only batch analysis and names the prerequisite relationship (before auto_mix/preview_mix), which goes beyond the annotations. It's a batch operation over a directory which is a meaningful behavioral disclosure.

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?

Compact and well-organized: first sentence states purpose, second clarifies the batch nature and relationship to analyze_audio, third gives explicit workflow timing. Zero wasted words, information is front-loaded.

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?

Despite being a simple one-parameter tool, the description is complete: purpose, data input expectations, relationship to alternatives, and workflow placement are all covered. An output schema exists, so return-value explanation isn't required. Nothing significant is missing for effective use.

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% and there's only one parameter. The description reinforces the directory/parameter by restating the 'one WAV per track' constraint and the default renders/ directory, but doesn't add substantial new semantics beyond what the schema already documents. Baseline 3 is appropriate with full coverage.

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?

Description clearly states verb+resource+scope: 'Analyze every WAV in a directory of rendered tracks'. It explains the context (bounced Ableton tracks, one WAV per track) and explicitly differentiates from siblings as the 'batch variant of analyze_audio', distinguishing its purpose.

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?

Provides explicit timing guidance: 'Run this before auto_mix or preview_mix so the renders are measured against the style profile.' It names sibling tools (analyze_audio, auto_mix, preview_mix) and positions this tool's role in the workflow, effectively distinguishing when to use the batch variant vs the single-file variant.

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