producer_generate_custom_music

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

No annotations are provided, so the description must carry full burden. It states that the tool generates music and returns a Task ID and audio information. However, it does not disclose behavioral traits such as whether the operation is synchronous or asynchronous, any destructive actions, auth requirements, rate limits, or other side effects. The mention of callback_url hints at async but is not explicitly stated.

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 with a front-loaded purpose, then usage guidelines, and a returns section. It is not overly verbose, but the usage guidelines section could be more concise. However, every sentence adds value.

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 schema coverage is 100% and output schema is described in the description (returns Task ID and audio info), the description is fairly complete. It explains when to use and what parameters provide, though it could explicitly mention that 'lyric' and 'title' are required as per schema.

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 baseline is 3. The description does not add additional meaning to the parameters beyond what the schema already provides. It mentions lyrics, title, and style but the schema descriptions are already detailed.

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 'Generate AI music with full control over lyrics, title, and style', using a specific verb and resource. It distinguishes itself from the sibling 'producer_generate_music' by explicitly stating it is for when you have specific lyrics and want precise control, while the sibling is for quick generation without writing lyrics.

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 explicit when-to-use conditions ('Use this when: - You have specific lyrics... - You want precise control over the music style - You need a specific song title') and explicitly names the alternative ('For quick generation without writing lyrics, use producer_generate_music instead').

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