mcp-qemu-lab

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

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions the transfer method ('via SCP') but omits critical details: whether this requires authentication, network connectivity, specific VM states, error handling, or what happens if files exist at the destination. For a file copy operation with zero annotation coverage, this leaves significant behavioral gaps.

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, efficient sentence that front-loads the core action without unnecessary words. Every part ('Copy a host file into the guest filesystem via SCP') directly contributes to understanding the tool's function, making it appropriately concise and well-structured.

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?

Given the tool's moderate complexity (file transfer between host and guest), no annotations, 0% schema coverage, but presence of an output schema, the description is incomplete. It covers the basic purpose but misses parameter details, behavioral context, and usage guidelines. The output schema may help with return values, but the description alone doesn't provide enough context for safe and effective use.

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%, so the description must compensate for all parameter documentation. It mentions 'host file' and 'guest filesystem' but doesn't explain what 'vm_id', 'host_path', 'guest_path', or 'timeout_sec' mean or their expected formats (e.g., absolute paths, VM identifier syntax). The description adds minimal semantic value beyond the parameter names themselves.

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 ('Copy') and resources involved ('a host file into the guest filesystem via SCP'), making the purpose immediately understandable. However, it doesn't explicitly differentiate from its sibling 'guest_copy_out' (which presumably copies from guest to host), missing full sibling distinction.

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 provides no guidance on when to use this tool versus alternatives like 'guest_copy_out' or other file transfer methods. It lacks context about prerequisites (e.g., VM must be running), exclusions, or comparison with sibling tools, offering minimal usage direction.

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