shuffle_1

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

With no annotations, the description must fully disclose behavior. It claims to 'shuffle string' but the input schema has zero parameters, implying no input is taken. This is misleading and lacks transparency about how the tool operates or what it expects.

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 extremely short (two words), but conciseness is not achieved at the expense of clarity. Critical information is missing, making the tool unusable based solely on the definition.

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 tool has no parameters and no output schema, the description should clarify behavior. It fails to explain what 'shuffles string' means, how to use it, or what the result is. The definition is entirely incomplete.

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?

Although there are no parameters (baseline 4), the description implies a string parameter exists, contradicting the schema. This misleads the agent about expected inputs. The description adds no meaningful information and is counterproductive.

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 'Shuffles string' provides a vague verb+resource but lacks specificity. It does not clarify whether it shuffles characters in a single string or shuffles a list of strings. There is no differentiation from the sibling tool 'shuffle', leading to ambiguity.

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 usage guidance is provided. The description does not indicate when to use this tool, nor does it compare or contrast with sibling tools like 'shuffle'. The agent has no context for proper selection.

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