device_set_parameter

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

With no annotations, the description fully carries the burden: it discloses idempotency (within 1e-4), name lookup cost (bridge call), and output (before/after value with verification diff).

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 main purpose, no wasted words.

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?

Despite good description, the missing parameters in the input schema severely limit completeness. Agent cannot invoke the tool without knowing what to pass. Output is described but that's not enough.

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 implies parameters (parameter_index, parameter_name) but the input schema has zero properties. Schema coverage is 100% only because it's empty; the description adds meaning but is not actionable without actual schema parameters.

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 action ('Set one device parameter'), the resource ('device parameter'), and the method (by parameter_index or parameter_name). It distinguishes itself from sibling device_get_parameters.

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 recommends using after device_get_parameters when possible, providing clear usage context. Also mentions idempotency and cost of name lookup.

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