create

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

No annotations are provided, so the description carries full burden for behavioral disclosure. 'Create' implies a write/mutation operation, but the description doesn't state whether the vault needs to be unlocked, what happens to existing items with the same name, whether this triggers syncing, or what the response/return value looks like. For a mutation tool with zero annotation coverage, this is a significant gap.

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, efficient sentence with no wasted words. However, it's arguably under-specified rather than concise — there's room to add useful guidance without bloating it. Still, for what it contains, the structure is clean and front-loaded.

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?

The tool has 5 parameters, no annotations, no output schema, and a generic name ('create'). The description is minimal and doesn't explain return values, failure conditions, or behavioral semantics. Given the complexity and zero annotation support, the description should do substantially more than one sentence to be considered complete.

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 100%, so all 5 parameters are documented in the schema itself. The description adds no parameter-level detail beyond the schema. Baseline 3 applies since the schema does the heavy lifting and the description doesn't need to compensate for undocumented parameters.

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 'Create a new login item in your vault' states a clear verb+resource action with a specific scope ('login item', 'in your vault'). It distinguishes from siblings reasonably, though 'create' is a generic tool name and the description doesn't contrast against 'edit' or other mutations. It's clear but lacks the specificity that would make it a 4-5.

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 is provided on when to use this tool versus alternatives like 'edit', 'generate', or 'delete'. The description implies usage context (creating login items) but offers no exclusions, prerequisites, or alternative recommendations. The agent gets no direction about the vault being locked versus unlocked or other conditions.

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