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

The annotations already declare destructiveHint=true, so the description does not need to restate that this is a non-read operation. However, the description adds no additional behavioral context, such as whether sending the email invalidates the current password, requires admin permissions, or is rate-limited. The description merely reiterates the action without enriching the agent's understanding of side effects or prerequisites.

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 redundant: 'Send reset password email - Send reset password email for a specific user' repeats the same information twice. While short, the repetition wastes words and does not add value. A concise version would state the action and the target once, without the duplicated title-like phrasing.

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?

With four parameters, no output schema, and no enums, the description must provide more context about what happens when the tool is invoked. It does not mention the return value, expected side effects, or the purpose of required headers like x-request-id. The description is too sparse to fully inform an agent, especially given the lack of structured schema descriptions.

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%, meaning all four parameters (userId, redirectUrl, x-trace-id, x-request-id) are undocumented in the schema. The description must compensate but only mentions 'specific user', which does not clarify which parameter holds the user ID or what the other parameters are for. This is a significant gap for a tool with four parameters and no schema descriptions.

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 'Send reset password email' and the target 'for a specific user', making it evident what the tool does. However, it does not differentiate this from sibling tools like 'resetPasswordAction' or 'resendEmailVerification', which could be similar in purpose. The verb+resource is specific enough for a 4, but the lack of distinguishing context prevents 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?

The description provides no guidance on when to use this tool versus alternatives. It does not mention any prerequisites, user roles, or scenarios where this tool is preferred over resetPasswordAction or resendEmailVerification. Without any contextual cues, users are left to infer the appropriate usage.

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