get_connection_status

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

No annotations are provided, so the description must disclose behavioral traits. It describes what is checked but does not state whether the operation is read-only, what it returns, or what happens if the connection fails. For a status-check tool, this is a notable omission.

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-loaded with the action and purpose. The second sentence gives targeted usage guidance. No fluff or 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 is simple (no params) and has an output schema (not shown) that likely explains return values. The description provides the purpose and a clear usage context. It could be slightly more explicit about the nature of the 'status' but remains complete for an agent to call it correctly.

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?

There are zero parameters, and the schema has no properties. Per the rubric, the baseline is 4. The description adds no parameter-related information because none exists, which is appropriate.

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 ('Check') and names the exact resources (ELM327/ECU connection, port, OBD-II protocol). This clearly distinguishes it from sibling tools like read_sensor or read_dtc, which are data-gathering operations.

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?

Explicitly states a usage condition: 'Use this first when a vehicle may be off or disconnected.' This gives clear context on when to invoke it, though it doesn't mention exclusions or compare to alternatives directly.

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