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

No annotations are provided, so the description must disclose behavioral traits itself. It does not mention whether it mutates session state, requires an active session, produces a one-off output, or has side effects; 'Generate a softer afterglow' is too thin to establish this.

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?

The description is a single short sentence with no filler, so it is concise. However, it is so sparse that the brevity reflects under-specification rather than efficient completeness.

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 tool with four parameters, one required enum, no output schema, and no annotations, a one-line description is insufficient. The agent cannot determine what result to expect or how parameters shape the output.

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?

Schema description coverage is 0% and the description mentions none of the four parameters. The agent gets no help understanding mode, flavor, intensity, or duration_minutes beyond raw schema types/enums.

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 clear action ('Generate') and target ('a softer afterglow and integration experience'), so an agent can infer it relates to the come-down phase. It does not explicitly contrast with siblings like take_hit or extend_hit, so it lacks sharp differentiation.

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 about when to call this tool instead of siblings such as extend_hit or check_state. The description only says what it does and leaves all selection logic to the agent.

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