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

No annotations are provided, so the description carries full responsibility for disclosing behavior. It mentions packaging, uploading, fallback, and default extraction, which are useful, but it does not mention potential side effects like overwriting existing files, permission requirements, or failure modes beyond the tunnel fallback.

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 front-loaded, stating the main action in the first sentence and supplementary details (fallback and default extraction) in the second. No unnecessary words.

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 description provides enough context for a correct invocation, including the default extraction behavior and the fallback mechanism. It does not describe return values or error scenarios, but no output schema exists, so that is not required. It briefly mentions defaults but not all parameter defaults, though the schema covers those.

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 the baseline is 3. The description does not add extra meaning to individual parameters beyond what the schema already provides; it only summarizes the overall workflow.

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 action: packaging and uploading a local project directory to a sandbox workspace. It also distinguishes itself by mentioning the creation of a tar.gz archive and extraction, which differentiates it from file-level upload tools like huaweicloud_sandbox_upload_file.

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 explains the mechanism (HTTP tunnel with base64 fallback) but does not explicitly state when to use this tool versus alternatives such as huaweicloud_sandbox_upload_file or huaweicloud_sandbox_exec_one_shot. The context is clear enough for a project-directory upload scenario, but there is no explicit when/when-not guidance.

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