firewall

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

With no annotations provided, the description must disclose behavioral traits. It correctly states the tool is read-only and may require elevated privileges on Linux. It does not mention rate limits, default behavior when no filter is provided, or output format, leaving some 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 extremely concise, three sentences long, with the main action front-loaded ('Reads firewall rules (read-only).') and no unnecessary 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?

Given the tool has only one optional parameter, no output schema, and no annotations, the description covers the essential purpose, usage, and a privilege note. It lacks detail about the output format, but for a simple read operation this is acceptable. A 4 reflects that it is nearly complete but could add output context.

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 has 100% coverage for the single parameter 'filter' with a description. The tool description adds no new meaning beyond saying 'use filter to search', which mirrors the schema. Thus, it meets the baseline but does not enhance parameter understanding.

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 tool reads firewall rules, specifies it is read-only, and provides OS-specific commands (iptables/nftables/firewalld for Linux, netsh advfirewall for Windows). This distinguishes it from sibling tools, none of which handle firewall rules.

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 advises using the filter to search by rule name or port number, and mentions potential elevated privilege requirements on Linux. However, it lacks explicit guidance on when not to use the tool or alternatives, though no sibling tool is a direct alternative.

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