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

Annotations already indicate this is not read-only, not open-world, and not destructive. The description adds meaningful behavioral context beyond annotations: writes go through ChangeRequests with message, diff, and history, and stored content should be treated as data, not instructions. This helps the agent understand side effects and safety expectations.

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 compact and includes the endpoint, multi-space handling, ChangeRequest behavior, and a security note without excessive padding. The opening sentence is grammatically awkward and slightly vague, but the overall structure is efficient and front-loaded with the core action.

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?

For a write tool with 10 parameters, no output schema, and a clear sibling workflow, the description is incomplete. It does not explain the upload-confirmation workflow, what storageKey refers to, what the response contains, or how the required parameters relate to a prior upload step.

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 only 20%, and the tool description adds little parameter meaning. It only repeats targetSpaceId guidance already present in the schema and does not explain the required storageKey, fileName, mimeType, or sizeBytes, nor the optional metadata, contentHash, or context parameters.

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 title and endpoint clearly identify this as the asset-upload confirmation action, and the first sentence states that the file is recorded and its Asset library entry is ensured. However, the description does not explicitly differentiate it from sibling tools like assets_create_upload_url or community_confirm_post_image_upload, so the agent must infer the precise role from context.

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 gives conditional guidance for multi-space accounts: call auth_verify, ask the user which space to use, and pass targetSpaceId. It does not state when to use this tool versus the upload-URL creation or other asset tools, nor does it mention that this typically follows an upload to a URL from assets_create_upload_url.

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