Ensure Package State

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

Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=true, which match the description's implied behavior. The description does not add new behavioral context beyond what the annotations provide, but it is consistent and does not contradict.

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 concise sentence with no superfluous words, making it efficient and easy to parse.

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?

Given the input schema (100% coverage), annotations covering safety, and an output schema (not shown but indicated), the description is adequate. It does not explain return values, but the output schema handles that. Minor missing context like supported package managers is not critical.

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 coverage is 100%, with each parameter having a description. The description adds slight context by linking state to package installation/removal, but does not provide additional semantics beyond the schema's 'Desired state' and 'Package name'.

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 verb ('ensures') and resource ('package'), specifying two possible states (installed or removed). It is specific enough to understand the tool's function, though it does not explicitly distinguish from sibling tools like 'ensure_service'.

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?

The description provides no guidance on when to use this tool versus alternatives, nor any prerequisites or conditions for choosing between 'present' and 'absent'. Sibling tools exist for similar operations (e.g., 'ensure_service'), but no differentiation is made.

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