get_host_info

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

No annotations are provided, so the description carries the full burden, and it does convey that this is a non-mutating informational read by naming only returned data. However, it says nothing about cost, permissions, side effects, or whether the call is slow, so behavioral coverage is only adequate for a trivial zero-parameter query.

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 front-loaded phrase with zero filler, and the parenthetical listing of returned fields earns its place. It is clipped enough to read as a label rather than a complete sentence, but nothing is redundant.

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?

With no output schema, the description usefully names the categories of data returned (CPU, memory, VirtualBox version), which is the main thing an agent needs to decide whether to call it. Given the tool's zero-parameter simplicity and lack of annotations, remaining gaps are minor.

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?

The tool takes zero parameters, so there is no parameter semantics to explain; the baseline for a parameterless tool applies. The description correctly does not spend words on nonexistent inputs.

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?

States the specific resource (VirtualBox host information) and enumerates what it covers (CPU, memory, VirtualBox version), which distinguishes it from the sibling get_vm_info that targets a single VM rather than the host. The verb is only implied by the name, but the resource 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?

Usage is only implied: an agent can infer this is for checking host capacity/version rather than VM-specific data, and no alternative or exclusion is named. There is no explicit when-to-use or when-not-to-use guidance beyond the contrast with get_vm_info carried by the wording 'host information'.

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