capitalize

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states what the tool does but doesn't mention any behavioral traits such as error handling (e.g., what happens with empty strings or non-alphabetic characters), performance characteristics, or side effects. The description is purely functional without operational context.

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, efficient sentence that directly states the tool's function without any unnecessary words. It's front-loaded with the core action and uses minimal verbiage, making it easy to parse and understand immediately.

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 low complexity (single parameter, no annotations, no output schema), the description is complete enough for basic understanding. However, it lacks details on output format (e.g., whether it returns the transformed string or a success status) and edge cases, which would be helpful for an agent to use it correctly in varied scenarios.

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 has 0% description coverage, but the single parameter 'text' is self-explanatory. The description doesn't add any parameter-specific details beyond what's implied by the tool name, but since there's only one parameter with a straightforward purpose, the baseline is adequate. No additional syntax, format, or constraints are provided.

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 the specific action ('capitalize the first letter of each word') and distinguishes it from siblings like 'uppercase' (which would capitalize all letters) and 'lowercase' (which would make all letters lowercase). It uses precise terminology that differentiates its function from similar text transformation tools.

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 provides no guidance on when to use this tool versus alternatives like 'uppercase' or 'lowercase', nor does it mention any prerequisites or contextual constraints. While the purpose is clear, there's no explicit comparison or usage context provided to help an agent choose between sibling tools.

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