ncloud_complete_multipart_upload

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

With empty annotations, the description carries full burden. It states the completion action but fails to disclose that this is a final, irreversible mutation, that it requires all parts to be successfully uploaded, or any error/return behavior. This is a significant gap for a state-changing operation.

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?

A single sentence with 11 words, immediately clear and front-loaded. No wasted 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 tool has 4 required parameters and no output schema, yet the description provides no information about the return value, prerequisites, or workflow relationship to sibling multipart tools. It lacks the behavioral context needed for an agent to understand the full completion 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 100%, so the description need not add parameter details. The mention of 'assembling previously uploaded parts' loosely relates to the 'parts' parameter but adds no extra semantics beyond the 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 the specific verb 'Complete' and the resource 'multipart upload', clearly distinguishing it from related part operations like upload_part or abort_multipart_upload.

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 phrase 'previously uploaded parts' contextually indicates this is the final step after parts are uploaded, providing clear usage context. However, it does not explicitly mention alternatives or when not to use it, so it doesn't earn a 5.

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