lm_link

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

Annotations already declare destructiveHint=true, readOnlyHint=false and openWorldHint=true, so the safety profile is covered. The description adds genuine context beyond that: it discloses that it operates by shelling out to installed CLI commands and that sign-in may still require the separate app — a real capability caveat. It still never says which actions are destructive or what changes are reversible.

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 with no filler, and the core statement is front-loaded. Slight deduction because the terseness leaves the operational scope unclear rather than crisp.

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 destructive, open-world mutation tool with no output schema and 0% parameter documentation, the description is too thin. It should state what each action mutates and how the `value` parameter is used; the CLI/app caveat is a good start but not sufficient.

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% across two parameters, so the description carries the full burden and fails it: neither the meaning of each `action` value nor the purpose/format of `value` (which presumably pairs with set-device-name/set-preferred-device) is explained. The enum names are suggestive but the description adds nothing.

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 verb is generic ('Manage') and the resource ('official LM Link') is never explained — an agent cannot tell what LM Link actually is. The action enum hints at the real operations (status/enable/disable/set-device-name/set-preferred-device), but that detail lives in the schema, not the description. It does not differentiate itself from the large lm_* sibling set.

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 statement of when to call this versus alternatives, nor which of the five actions to pick. The only guidance-like sentence ('Account sign-in may still require the app') describes a limitation, not a usage condition, and is not tied to a specific action.

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