list_bluetooth_devices

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is well covered. The description adds useful scope context about which devices are returned, but it does not add behavioral details beyond that, such as whether Bluetooth must be enabled or whether the result only reflects currently known paired devices.

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, front-loaded sentence that states the verb, resource, and scope without any filler. Every word contributes meaning, and the distinction between connected and paired devices adds precision without bloat.

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 zero-parameter, read-only, idempotent tool, the description is largely complete: the scope is clear and the return shape (a list of device names/identifiers) is reasonably inferable. The absence of an output schema means the description could optionally mention return fields or prerequisites, but this simplicity keeps the gap minor.

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 schema coverage is 100%, so there are no parameter semantics to document. Following the baseline for zero-parameter tools, this is appropriately handled; the description adds no unnecessary param information.

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 names a specific verb (List) and resource (Bluetooth devices), and further clarifies scope by distinguishing 'connected' from 'paired devices available to connect.' It clearly differentiates this read/list tool from sibling mutation tools like pair_bluetooth_device, unpair_bluetooth_device, and toggle_bluetooth.

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 clear context for when to use the tool: whenever the agent needs the set of connected or paired Bluetooth devices. There are no close alternative listing tools among the siblings, so explicit exclusions are not essential, though the description could have added a note that it does not scan for new/discoverable devices.

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