hue_beat_stop

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

Annotations already declare this is a non-read-only, non-destructive, idempotent mutation, so the safety profile is covered. The description adds one genuinely useful behavioral fact: the feature is an "optional extension", implying it may be unavailable on some setups. It does not say whether stopping restores prior light state or merely halts the loop, which is the main behavioral question for a stop operation.

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?

Six words, verb-first, zero filler. It is efficient but so terse that the key term ("hue_beat") is left as unexplained jargon rather than being briefly glossed.

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?

An output schema exists and there are no parameters, so the description need not explain returns or inputs. What is still missing for a mutation tool is what stopping actually does to the lights and whether a failure mode exists when the extension is absent.

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 tool takes zero parameters, so there is nothing for the description to disambiguate. Baseline 4 applies since the schema is empty and fully described.

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 ("Stop") and resource ("hue_beat"), making it distinguishable from hue_beat_start in the sibling list. However, "hue_beat" itself is never defined, so an agent must infer that it is a running effect or loop.

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?

No guidance on when to call this versus hue_beat_set or hue_beat_status, and no statement about what happens if hue_beat is not currently running. The "optional extension" note hints at availability conditions but does not say when the tool should be selected.

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