device_detail

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so 'Read-only' in the description is redundant. It adds some value by specifying what 'detailed status' includes (connect state, loader mode, connection-pool entry), but does not describe error behavior for unknown devices or return format.

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 short sentences, front-loaded with the action and the status fields inspected. There is no filler; the trailing 'Read-only' is redundant but does not bloat the description.

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 one-parameter read tool with rich annotations and no output schema, the description is largely complete: it names the inspected facets and scope. It does not state what happens for an unknown device_id or whether all three status fields are always present, which is a minor gap.

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 sole device_id parameter is fully documented in the schema, including its provenance from device_list. The description adds no further syntax, format, or validation semantics beyond what the schema already provides, so baseline 3 applies.

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 states a specific verb ('Get') and resource ('detailed status') scoped to one device, and enumerates the status facets returned. It distinguishes itself from list-oriented siblings such as device_list, but not from close siblings like device_status or device_pool_state.

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 no explicit when-to-use or when-not-to-use guidance; 'Read-only' is a property, not a routing rule. It does not name alternatives such as device_status or device_list, leaving selection largely to inference from the name.

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