caesar_cipher

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

With no annotations provided, the description carries full behavioral disclosure burden. It fails to mention critical behavioral traits such as case preservation, handling of non-alphabetic characters, or shift direction (positive/negative). This omission could mislead the agent about tool 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 extremely concise: two sentences plus a parameter list. The purpose is front-loaded, and every sentence serves a purpose. No extraneous information.

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's complexity (a cipher with behavioral nuances) and lack of annotations, the description is incomplete. It does not explain edge cases (e.g., non-letters, negative shift) or the output format, even though an output schema exists. The agent lacks sufficient context to use the tool reliably.

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 description adds minimal meaning beyond the schema: it restates parameter names and default values, and clarifies that mode accepts 'encrypt' or 'decrypt'. This adds value since the schema lacks an enum for mode, but overall it mostly duplicates schema information. Schema coverage is 0%, and the description compensates slightly.

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 clearly states 'Encrypt or decrypt text using the Caesar cipher.' It specifies the action (encrypt/decrypt) and the resource (text), and uniquely identifies it from sibling cipher tools (e.g., atbash_cipher, vigenere_cipher) by explicitly naming the Caesar cipher.

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 offers no guidance on when to use this tool versus alternatives (e.g., other ciphers). It does not mention prerequisites, limitations, or context scenarios. The lack of explicit usage context reduces its helpfulness for an AI agent deciding between sibling tools.

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