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

The phrase 'with metadata but no samples' is useful behavioral context and goes beyond the annotations, making clear that this call does not create or attach audio samples. However, the description does not disclose required permissions, whether the operation can be repeated safely, what the returned object contains, or how a created PVC voice fits into the overall sample-upload/training flow. Since annotations are generic, some behavioral burden remains unmet.

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 short and the second sentence adds the key distinction 'with metadata but no samples.' However, the first sentence 'Create Pvc Voice.' is a tautological restatement of the tool name and adds no value. The description could be improved by removing that first sentence and adding a more useful workflow hint instead.

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?

This is a creation tool with no annotations that describe safety or lifecycle details, no output schema, and no parameter descriptions. The description only scratches the surface by saying no samples are created. It leaves out the deeper context needed to use it reliably in a multi-step PVC workflow, such as what happens after creation, which differentiates it from the many sibling PVC-related tools.

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 0%, and the description does not explain any of the five parameters: name, labels, account, language, or description. It only says metadata is included, which does not clarify required values, formats, or meaning. The parameter semantics are essentially undocumented at the description level.

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 states the core action clearly: 'Creates a new PVC voice with metadata but no samples.' This specifies the resource (PVC voice) and adds a useful scope distinction, which differentiates it from general voice-creation tools like elevenlabs_create_voice. The opening sentence 'Create Pvc Voice' is redundant, so it does not earn a 5.

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 gives no guidance on when to use this tool versus alternatives. It does not mention that this tool only initializes a voice and that samples must be added or training must be run later via sibling tools such as elevenlabs_edit_pvc_voice_sample or elevenlabs_run_pvc_voice_training. No exclusions, prerequisites, or recommended workflows are provided.

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