esxi_transfer_status

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

Annotations already cover the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false), and the description adds useful behavioral context by specifying what is returned and explicitly excluding signed URLs or arbitrary server paths. This negative disclosure is valuable for an agent deciding whether this tool is appropriate.

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, front-loaded sentence that lists the key returned information and then states a clear exclusion. It is compact and contains no filler, though its terse list format could be slightly more structured for readability.

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 (one required parameter) and has a rich annotation set plus an output schema, so the description need not explain return values. However, it omits any usage context and does not clarify the required job_id, leaving clear gaps for an agent to fill by inference.

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 0% and the only parameter, job_id, is not mentioned or explained anywhere in the description. The description therefore does not compensate for the missing schema-level parameter documentation, leaving an agent to infer what job_id refers to and where it comes from.

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 the resource ('transfer/staging') and enumerates what it returns (progress, byte counts, checksums, errors), making the tool's purpose clear. It does not explicitly differentiate itself from sibling status tools such as esxi_operation_status or esxi_guest_process_status, so it stops short of a 5.

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 no positive guidance on when to use this tool versus alternatives like esxi_transfer_start, esxi_transfer_read_chunk, or esxi_operation_status. The only boundary provided is a negative output constraint ('does not output signed URL or arbitrary server paths'), which is not enough to constitute usage guidance.

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