create_vault

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

No annotations are provided, so the description carries the full burden for behavioral disclosure. It only states the action without any details on side effects, permissions, uniqueness constraints, or what happens upon successful creation. As a mutation tool, the lack of any behavioral context is a significant omission.

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 the action and resource front-loaded and no filler. It is efficient, though it may be too minimal to convey important context, but that is a completeness issue rather than conciseness.

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 lack of annotations and output schema, the description should provide more context about the operation's behavior, potential errors, or usage prerequisites. The simple sentence covers only the basic purpose, leaving important gaps for a mutation tool, making it incomplete.

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 input schema already fully describes the 'name' parameter as 'Vault name', and the description adds no additional parameter information. With 100% schema coverage, the baseline is 3, and the description does not enrich the parameter semantics.

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 action ('Create') and the resource ('a new Proton Pass vault'), providing a precise and unambiguous purpose. It inherently distinguishes from sibling tools like list_vaults or create_login by specifying the resource as a vault.

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 gives no explicit guidance on when to use this tool versus alternatives. The name implies it is for creating vaults, but there is no mention of prerequisites or situations where other tools (e.g., create_login, create_note) would be preferred. This is implied usage rather than explicit guidance.

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