Reproducir una locución en una llamada

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

Annotations already indicate it is not read-only, open-world, and not destructive. The description adds a warning ('⚠️ Audio en una llamada real') that emphasizes real-world side effects, providing additional context beyond the structured annotations.

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 front-loaded, stating the core action first. The warning is placed appropriately. However, it could be slightly more structured by separately explaining each parameter.

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 output schema and simple parameters, the description captures the essential purpose but omits details like return behavior, error conditions, or how to obtain the announcementId (though siblings like pbx_list_announcements exist). It is adequate but not fully complete.

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?

The description explains 'announcementId' as the locución to inject, partially compensating for the 0% schema coverage. However, 'callId' is not explicitly described (only implied by 'llamada en curso'), leaving ambiguity about its format or purpose.

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 action ('Inyecta/reproduce una locución') and the resource ('dentro de la llamada en curso'). It distinguishes from sibling call manipulation tools by specifying audio injection, and the warning about live calls adds specificity.

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 implies the tool is for active calls ('llamada en curso', 'Audio en una llamada real') but does not explicitly state when to use it over alternatives, nor does it provide usage exclusions or prerequisites.

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