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encoding_decoding_rot13

Encode or decode text using the ROT13 cipher, a simple letter substitution that shifts each letter by 13 positions. Custom rotation for other Caesar ciphers.

Instructions

Menu ID: rot13. ROT13 Encoding. Encode and decode text with ROT13 cipher online. Simple letter substitution cipher that replaces each letter with the letter 13 positions ahead in the alphabet. Use describe_tool with tool_id "rot13" for full page guidance.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
textYes
operationYes
rotationYes
Behavior2/5

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

The description lacks key behavioral traits. The tool is named 'rot13' but the schema includes a 'rotation' parameter, creating potential confusion about whether rotation is fixed or adjustable. No annotations are present to clarify safety or side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is short but includes extraneous 'Menu ID: rot13' and a reference to describe_tool that may not be actionable. It could be more concise by focusing on parameter semantics.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 3 undocumented required parameters and no output schema, the description is incomplete. It explains the cipher but fails to guide parameter usage or clarify the role of rotation, leaving significant gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description provides no explanation of the three required parameters (text, operation, rotation). With 0% schema coverage, the agent is left guessing parameter purposes and allowed values. Operation and rotation are not defined.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it encodes/decodes text using ROT13 cipher, specifying the substitution rule. However, it does not differentiate from similar sibling tools like encoding_decoding_caesar or encoding_decoding_rot, which have overlapping functionality.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No usage guidelines are provided. The description does not specify when to use this tool over alternatives, nor does it mention prerequisites or limitations. The reference to describe_tool for guidance is vague.

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

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