Login using otp. Connect to your P-Link wallet using the one time password you received by email

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

Annotations indicate readOnlyHint=true, suggesting a safe operation, but the description doesn't add behavioral context beyond this. It doesn't disclose what happens upon login (e.g., session creation, token return, error handling) or any rate limits. With annotations covering safety, the description adds minimal value, earning a baseline score for not contradicting them.

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 repetitive, echoing the title without adding value, making it inefficient. It consists of two redundant sentences that don't earn their place. While brief, it's under-specified rather than concise, failing to front-load useful information.

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 an authentication tool with no output schema and minimal annotations, the description is inadequate. It doesn't explain what happens after login (e.g., returns a session token, grants access to other tools) or error conditions. Given the complexity of authentication and lack of output details, more completeness is needed.

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%, with clear documentation for both parameters (email and otp). The description doesn't add any meaningful semantics beyond what the schema provides, such as format details or usage tips. Given high schema coverage, a baseline score of 3 is appropriate as the description doesn't compensate but also doesn't detract.

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?

Tautological: description restates name/title.

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 explicit guidance on when to use this tool versus alternatives is provided. While it mentions receiving OTP via email, it doesn't clarify prerequisites (e.g., must have an account, OTP must be valid) or contrast with other authentication methods. The context is implied but lacks explicit when/when-not instructions.

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