watermark_audio

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

With no annotations, the description carries the behavioral burden. It clarifies that the tool returns metadata and instructions and mentions fingerprinting/metadata embedding, suggesting no direct audio modification. However, it does not explicitly state whether file operations, permissions, or side effects are involved, leaving some ambiguity.

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 concise and well-structured with a clear purpose statement followed by Args and Returns sections. The second sentence ('This tool provides metadata and instructions...') is slightly redundant with the first but adds context, so it retains 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?

For a relatively simple metadata-generation tool, the description covers the purpose, all parameters, and the output structure. The presence of an output schema offset the need for detailed return-value documentation, but usage guidance and examples are still missing, preventing a score of 5.

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?

Despite 0% schema coverage, the description explains each parameter in detail: audio_description as a brief description, generator as the AI system name, and format_type with valid values (mp3, wav, opus). This adds significant meaning beyond the schema's titles and defaults.

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 explicitly states 'Generate watermarking metadata for AI-generated audio per Article 50(2)' with a specific verb and resource. The 'audio' scope clearly distinguishes this from sibling tools like watermark_text, watermark_image, and watermark_video.

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?

Usage context is implied through the tool name and reference to AI-generated audio, but the description does not explicitly state when to prefer this over sibling watermarking tools or mention any exclusions. No alternatives are given, so the guidance remains implicit.

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