Create a wallet for your email or get otp by email

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

Annotations provide readOnlyHint=true, indicating this is a safe read operation. The description adds minimal behavioral context by suggesting two possible outcomes (create wallet or get OTP), but doesn't explain conditions triggering each outcome, whether this is idempotent, or what happens if a wallet already exists. It doesn't contradict annotations, but adds only basic value beyond 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?

While technically concise with a single sentence, the description is under-specified rather than efficiently structured. It repeats the title verbatim without adding explanatory value, failing to front-load critical information about the tool's dual functionality or usage context. The brevity comes at the cost of clarity.

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 ambiguous dual functionality (create wallet OR get OTP), no output schema, and multiple sibling tools, the description is inadequate. It doesn't explain the relationship between the two operations, expected return values, error conditions, or how this integrates with the broader wallet system. The annotations provide basic safety information but don't compensate for the description's lack of completeness.

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 the email parameter fully documented in the schema. The description adds no parameter-specific information beyond what's already in the schema (e.g., no clarification on email format requirements or how it's used differently for wallet creation versus OTP retrieval). Baseline 3 is appropriate when the schema carries the full parameter documentation burden.

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?

The description provides no guidance on when to use this tool versus alternatives. There's no mention of prerequisites, when to choose this over 'fund_my_wallet' or 'login_with_otp', or whether this is for initial setup versus ongoing authentication. The agent receives no usage context beyond the ambiguous dual-purpose statement.

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