led_set_brightness

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

Annotations already declare readOnlyHint=false, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds nothing beyond that — no mention of device state requirements, whether the value persists, whether an LED device must be discovered via led_scan, or what happens on out-of-range input.

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?

A single front-loaded fragment with no wasted words; the range is stated immediately. Slight redundancy with the schema's identical range description, but nothing is padded.

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 one-parameter setter with annotations covering the safety profile and a fully described schema, the description is sufficient to invoke the tool correctly. Minor gaps remain around LED device readiness, but the core call is unambiguous.

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?

Only one parameter exists and schema coverage is 100% — the schema already documents 'level' as a 0-100 percentage. The description merely repeats that range, adding no new semantics such as clamping behavior or integer/float expectations.

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?

States a specific verb + resource ('Set LED strip brightness') with a value range, which cleanly separates it from the generic set_brightness sibling that targets screen brightness. It stops short of explicitly naming that sibling, so an agent must infer the distinction from the 'LED strip' qualifier alone.

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?

There is no guidance on when to use this versus set_brightness/increase_brightness/decrease_brightness, nor on prerequisites such as whether the strip must be powered on via led_power first. Usage is only implied by the tool name.

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