Create a OneDrive folder

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

Annotations already establish that this is not read-only and not destructive. The description adds useful behavioral context by stating the return value includes folder id + webViewLink, which is beyond the annotations. It could mention idempotency implications or duplicate-name behavior, but the essential side effect is clear.

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?

Three compact sentences, each earning its place: the first explains the action, the second explains how to consume the result, and the third clarifies a critical distinction from save_to_onedrive. No filler or repetition.

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, with only two well-documented parameters and no output schema. The description supplies the missing return-format information (folder id + webViewLink) and how to use it in dependent tools, making the definition fully actionable.

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%, so name and parentId are already documented. The description adds 'optionally nested under parentId' and mentions the root default, but this is largely restating what the schema already provides. It does not add significant new parameter meaning beyond the structured schema.

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 uses a specific verb and resource: 'Create a folder in the user's OneDrive'. It immediately distinguishes this from Google Drive siblings by naming OneDrive, and it includes the optional parentId nesting behavior. The tool's role is unambiguous.

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 explicitly explains how to use the returned folder id — as update_onedrive_file's moveToFolderId or as parentId for a nested folder. It also warns that save_to_onedrive's `folder` parameter expects a NAME, not this id, which prevents a likely misuse and distinguishes this tool from a related sibling.

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