render_voiceover

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

With no annotations provided, the description carries the full burden of disclosing side effects and behavioral traits. The one-sentence description only states the basic action—rendering text to a file—but does not disclose overwrite behavior, provider-specific quirks, file creation details, or failure modes. The rich behavioral details are buried in parameter descriptions, but the main description fails to summarize them.

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 a single, focused sentence that states the core purpose without unnecessary words. It is front-loaded and immediately communicates what the tool does. There is no bloat, and the sentence 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 8 parameters, full schema coverage, and an output schema, the description is not required to explain every parameter. However, it lacks contextual guidance on when to use this tool versus alternatives, and does not hint at the short/long distinction that the sibling names imply. The description is adequate for the basic function but incomplete for selection decisions.

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 baseline is 3. The description itself adds no parameter-specific meaning beyond what the schema already provides. However, the schema descriptions are detailed (e.g., overwrite behavior, forward-only for instructions, numbering of siblings), which makes the overall parameter handling strong. Since the description text does not augment the schema, it stays at the baseline.

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 verb ('render') and resource ('narration text to a local audio file') and mentions the transport ('via OpenRouter'). However, it does not explicitly differentiate from the sibling 'render_long_voiceover' other than by name, which leaves some ambiguity about when each is appropriate.

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 its siblings (e.g., render_long_voiceover, preview_voice). It does not mention prerequisites, typical scenarios, or alternatives. The agent must infer usage from the name and parameter descriptions, which is insufficient.

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