get_device_settings

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

With no annotations, the description carries the full burden of disclosing behavior. It states that it returns device configuration and lists the included settings, but it does not mention potential errors (e.g., device not found) or the exact output structure. This provides some transparency but not comprehensive detail.

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 well-structured. It uses two short sentences for the purpose and a clear parameter explanation, with no wasted words or redundant information.

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 read operation with one optional parameter, the description provides enough context for an agent to invoke the tool correctly. It explains the return content, and the parameter guidance covers how to obtain the device ID. The output schema is marked as present, so the absence of explicit return fields in the description is acceptable.

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 fully explains the only parameter (device_id): it is optional, defaults to the most recently used device, and can be obtained from specific sibling tools. This adds significant meaning beyond the schema, which only specifies type and default with no description.

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 verb 'Get' and the resource 'settings for a specific Garmin device', and it lists the types of settings returned (time/date format, units, activity tracking, alarms). This distinguishes it from sibling tools like get_devices and get_device_last_used, which return device lists or IDs.

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 provides guidance on how to obtain the device_id parameter via get_devices or get_device_last_used and explains the default behavior when omitted. It does not explicitly state alternatives for the same purpose (since there are none), but the guidance is sufficient for typical use.

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