camera_status

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It implies a read-only operation by stating it 'returns' data, but it does not explicitly confirm that no state is modified, nor does it mention potential failure modes (e.g., camera not connected) or authentication requirements. This is adequate for a simple status tool but not fully transparent.

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 concise sentence in Japanese that front-loads the main action and output. It contains no fluff or repetition, and every word contributes to understanding the tool's purpose. This is an exemplary model of conciseness.

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 is simple (zero parameters) and has an output schema, so the description need not exhaustively explain return values. It covers the key aspects: connection status, settings, and running timelapse job. However, it omits potential edge-case behavior (e.g., what happens when the camera is disconnected) but this is minor given the output schema likely handles it.

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 tool has zero parameters, and the input schema is an empty object with 100% schema coverage. The baseline for 0 parameters is 4, and the description does not need to explain any parameter semantics. The description adds no parameter-related information, which is appropriate given the absence of parameters.

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 that the tool returns camera connection status, current settings, and the running timelapse job. It uses a specific verb ('返す' meaning 'returns') and identifies the resource (camera). However, it does not explicitly differentiate itself from sibling tools like timelapse_status, which might also return timelapse-related information, so it misses the full 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 provides no guidance on when to use this tool versus alternatives, nor does it mention any exclusions or prerequisites. It simply states what the tool does without context, leaving the agent to infer usage from the tool's name and sibling list.

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