roll_dice

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

The description discloses the cost via x402 but omits other behavioral aspects such as how randomness is simulated, what the output format is, or any constraints. With no annotations to rely on, the description is insufficient for understanding the tool's behavior.

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 brief and front-loaded with the core action, but it includes the filler phrase 'Other Utilities tool' and omits necessary details. It is not overly verbose, but the brevity results in under-specification.

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?

Given the lack of annotations, output schema, and informative parameter descriptions, the tool description should provide more context. It fails to explain what parameters are accepted, what the result looks like, or how to use it correctly within the broader tool ecosystem.

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?

The input schema has one 'params' object with a generic description that provides no specific parameter details. Since schema coverage is 100%, the baseline is 3, but the description adds no information about what parameters (e.g., number of dice, sides) should be passed.

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 the tool rolls dice, which is a specific verb+resource pairing that clearly conveys the action. It distinguishes itself from the sibling flip_coin by focusing on dice, though it doesn't explicitly contrast them.

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 guidance on when to use this tool versus alternatives like random number generators or flip_coin. No context or exclusions are provided; the description only mentions the cost, not usage scenarios.

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