start_talkback_session

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

No annotations are provided, so the description carries the full burden. It only states the action and parameter sourcing; it does not disclose side effects (e.g., a persistent two-way audio stream, potential privacy implications, or whether a session must be ended manually). This is a significant gap for a mutating action.

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 compact, front-loaded with the action, and includes only necessary parameter guidance without redundant phrasing.

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?

The tool has an output schema and only two parameters, but the description omits important operational context such as how the session is terminated, prerequisites for the camera, and whether talkback requires any special permissions. For an action with no explicit stop sibling, this leaves an agent without a complete picture.

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 adds meaningful parameter documentation beyond the raw string schema: it defines host as 'console name, ID, or composite ID (MAC:numericId format)' and instructs the agent to get camera_id from list_cameras. This compensates for the 0% schema description coverage.

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 opens with a specific verb ('Start') and resource ('talkback audio session on a Protect camera'). It accurately names the action and distinguishes from all sibling tools by identifying a unique camera capability.

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?

It gives clear context by explaining that camera_id must be obtained from list_cameras, and defines acceptable host formats. It does not explicitly contrast with alternatives, but no direct alternative for talkback exists among siblings, so the guidance is sufficient for selecting the tool.

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