subnet_check_tool

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

No annotations are provided, so the description carries the full burden. It transparently discloses the tool's behavior: it retrieves host IP, subnet mask, and gateway, calculates the subnet range, and determines if the target IP is in the subnet. This is sufficient for a read-only analysis tool, though it does not mention error handling or limitations.

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 two sentences, with the first stating the main purpose and the second listing the specific computations and output. Every word contributes value, no redundant phrases, and it is appropriately sized for a single-purpose tool.

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 only one parameter and no output schema, the description provides a comprehensive list of what the tool calculates and returns, including network address, broadcast address, usable host range, CIDR, and the same-subnet determination. This is enough for an agent to understand what to expect, though the exact output format is not specified.

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 input schema fully documents the single parameter target_ip with a description and example, so the description doesn't need to add much. The description's mention of 'target IP' adds no extra meaning beyond the schema's definition, and with 100% schema coverage the baseline is 3.

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 'Analyze' with the resource 'subnet information for a target IP address' and clearly lists the distinct calculations and outputs (network address, broadcast address, usable host range, CIDR) and the final comparison result. This distinguishes it from sibling tools like network_scan_tool and port_scan_tool, which are more about scanning than single-IP subnet analysis.

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 implies the tool is for checking if a target IP is in the same subnet as the host, but it does not explicitly state when to use it versus alternatives like network_scan_tool, nor does it mention any exclusions or prerequisites. The usage context is clear but not explicitly contrasted with other tools.

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