Vaultwarden System

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

No annotations are provided, so the description carries the full disclosure burden. It implies a harmless read ('Read', 'public configuration'), but says nothing about whether authentication is required, rate limits, or what happens on a failing/offline server — significant gaps for an ops tool with zero annotation coverage.

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 core sentence is short, front-loaded, and waste-free. The trailing 'CONCEPT:VW-ECO.mcp.system-operations' tag adds little value for an agent but is brief enough not to be a serious defect.

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?

An output schema exists, so return values need not be explained, and the required 'action' parameter is documented in the schema. However, for a system-operations tool with no annotations, the description omits any guidance on auth requirements or when each action is appropriate, leaving it only minimally viable.

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%, and the schema enumerates the three valid 'action' values, so the baseline is 3. The description restates the same three capabilities without adding syntax or format detail beyond the schema.

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 uses a specific verb ('Read') plus a concrete resource set ('Vaultwarden server liveness, version, and public configuration'), which maps to the three schema enum values alive/version/config. It does not name any sibling tool to differentiate itself, so it falls short of a 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?

There is no statement of when to use this tool versus alternatives such as vaultwarden_metadata or vaultwarden_admin, nor any exclusion conditions. Usage (health/version checks) can only be inferred from the word 'liveness', which is thin guidance.

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