chmod

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

No annotations are provided, so the description carries the full burden. It discloses that the tool converts between formats and provides an explanation, and hints at a PRO trial limit, but it does not describe the output structure, error handling, or how the trial limit works. This is adequate for a pure conversion utility but lacks deeper behavioral detail.

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 core description is a single, front-loaded sentence that clearly states the action and scope. The promotional suffix '[PRO - 3 free trials]' is minor noise, but the overall structure is compact and efficient.

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?

The tool is simple, has one required parameter, and the schema is complete. There is no output schema, and the description does not specify the exact return format or behavior for invalid input, though these can be reasonably inferred for a conversion tool. It is sufficient but not thorough.

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?

Schema description coverage is 100%, and the description mirrors the schema's examples ('755' and 'rwxr-xr-x') without adding extra constraints. It adds chmod context but no additional meaning beyond what the schema already provides.

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 has a specific verb ('Convert'), a clear resource ('chmod permissions'), and a precise scope ('numeric (755) and symbolic (rwxr-xr-x)'). It clearly distinguishes this utility from the sibling tools, none of which relate to chmod permission conversion.

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 use case is implied by the verb 'Convert' and the chmod context, but the description does not explicitly state when to use this tool versus alternatives or mention any exclusions. It provides a clear function but no direct routing or decision guidance.

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