create_directory

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It doesn't state whether the directory can be nested, what happens if it already exists (error or silent success?), whether parent directories are created automatically, or whether permissions are inherited. For a state-mutating operation, this is a minimal disclosure gap.

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 with no wasted words. It delivers the core purpose in minimal space, which is appropriate for a tool with one self-explanatory parameter.

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 moderately simple (one parameter, no output schema, no nested objects), but the absence of annotations and any behavioral guidance (error handling, nesting behavior, 'allowed folder' definition) leaves meaningful gaps. Given the file-system mutation context and sibling tools like delete_file, the description should clarify behaviors beyond the single sentence to be complete.

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?

There is only one parameter, 'path', and schema description coverage is 0%, meaning the schema itself provides no description. However, for a directory creation tool, 'path' is highly self-descriptive and the single-parameter simplicity reduces the need for elaboration. The description adds minimal semantic value beyond the schema, but the low parameter count mitigates the gap.

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 states a clear verb+resource combination ('Create a directory') though the qualifier 'inside an allowed folder' is somewhat vague. It distinguishes from siblings like create_file and rename_file adequately since 'directory' is a distinct resource type.

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?

There is no guidance on when to use this tool versus alternatives, nor any exclusions or prerequisites described. The phrase 'inside an allowed folder' implies a constraint but doesn't explain what 'allowed' means or how to determine it, leaving the agent without actionable usage context.

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