estimate_music_cost

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

No annotations are provided, so the description carries full burden. It mentions a specific cost ('$0.68 (Suno V5)') which hints at pricing, but doesn't disclose behavioral traits like whether this is a read-only operation, if it requires authentication, rate limits, or what the output format looks like. For a cost estimation tool with zero annotation coverage, this leaves significant gaps in understanding how the tool behaves.

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 extremely concise—just one sentence with no wasted words. It front-loads the core purpose and includes a specific cost detail that's directly relevant. Every part of the description 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 no annotations and no output schema, the description is incomplete. It mentions a base cost but doesn't explain how the estimation works, what factors influence cost beyond duration and format, or what the return value looks like. For a cost estimation tool with two parameters, this leaves too many unanswered questions about functionality.

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 the schema fully documents both parameters (duration and audio_format). The description adds marginal value by noting 'WAV adds +$0.10' for the audio_format parameter, but doesn't provide additional context beyond what's in the schema. This meets the baseline for high schema 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?

The description clearly states the tool's purpose: 'Estimate the cost of music generation.' It specifies the resource (music generation) and verb (estimate cost). However, it doesn't explicitly differentiate from sibling tools like 'estimate_cost' or 'estimate_video_cost', which reduces clarity about when to choose this specific music-focused estimator.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention sibling tools like 'estimate_cost' (general) or 'estimate_video_cost' (video-specific), nor does it specify prerequisites or appropriate contexts for music cost estimation versus other estimation tools.

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