random_bytes

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

With no annotations, the description carries full responsibility for behavioral disclosure, but it only states the action without contextual details. It does not mention whether the bytes are cryptographically secure, what the return format is, or any error conditions.

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, concise sentence with no wasted words, earning a high score for brevity. However, it is so short that it omits useful context, slightly detracting from structure.

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?

There is no output schema, so the description should clarify return values or behavior, but it does not. The tool's purpose is simple, yet the lack of any mention of output format or security properties leaves gaps for an agent deciding on usage.

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 schema fully describes both parameters (count and encoding) with clear descriptions, so the baseline is 3. The description adds no additional meaning, but the schema already covers the parameter semantics sufficiently.

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 'Generate random bytes' uses a specific verb (generate) and resource (random bytes), clearly distinguishing it from sibling tools like random_uuid or random_integer. The focus on 'bytes' uniquely identifies the tool's output type.

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. It does not mention that one should use it for raw byte generation, nor does it note any exclusions such as 'prefer random_password for string tokens'.

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