ring_query_event_history

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

With no annotations, the description carries the burden of behavioral disclosure. It conveys a read-only operation ('Retrieve') and explains the two modes, but it does not mention potential rate limits, the definition of 'recent', or that no events will be deleted. There is no contradiction, but richer behavioral context would be helpful.

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?

Two concise sentences front-load the main action and examples, and the second sentence clarifies the targeting modes. Every word earns its place without redundancy.

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?

For a simple retrieval tool with two optional parameters, the description covers the key usage modes. It lacks an output schema and annotations, but the description sufficiently explains what the tool does and how to choose between device-specific and aggregate queries.

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 coverage is 100%, so the baseline is 3. The description adds meaning by explaining the semantics of omitting deviceId (aggregates across all devices) and that deviceId can be a name in addition to an ID, going beyond the schema's bare parameter descriptions.

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 uses a specific verb ('Retrieve') and clearly identifies the resource ('recorded historical events') with concrete examples (motion alerts, doorbell presses, live views). It distinguishes itself from sibling tools that list devices, get statuses, or manage streams, leaving no ambiguity about its function.

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 clear context for how to use the tool: target a specific device by ID/name or aggregate across all devices. It implies when this is useful, though it does not explicitly state exclusions or alternatives, which are not needed given the distinct sibling names.

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