Prevalidate

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

Annotations already declare readOnlyHint=false, openWorldHint=true, and destructiveHint=false, so the safety profile is partly covered. The description adds meaningful SSO-flow context, but it does not clarify what 'pre-validate' actually does operationally or why a validation step is marked non-read-only, leaving a gap around side effects.

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, front-loaded sentence with no wasted words. It could have included a little more useful detail without becoming verbose, but the existing text is efficiently structured.

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 tool with three undocumented parameters, no output schema, and an SSO-related workflow, one sentence is not enough. The agent does not know which parameter carries the organization identifier, what a successful or failed pre-validation looks like, or what side effects to expect beyond the annotations.

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%, and the three parameters (form, params, json_body) are completely undocumented in both schema and description. The description mentions an 'SSO organization identifier' but does not map it to any parameter, leaving the agent with almost no guidance on what to supply.

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 states a specific action (pre-validate) and target (SSO organization identifier) within a clear flow context (before redirecting to the IdP). It effectively distinguishes this tool from the many unrelated Vaultwarden siblings, though it does not explicitly name alternatives.

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 phrase 'before redirecting to the IdP' implies the correct stage in an SSO flow, giving some when-to-use guidance. However, it provides no exclusions, no alternative tools, and no prerequisites, leaving the agent to infer the exact invocation conditions.

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