sec.firewall

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

No annotations are provided, so the description carries the full disclosure burden. It hints at read-only behavior via "state" and usefully discloses that the underlying mechanism differs per OS, but says nothing about privilege requirements (ufw and socketfilterfw queries typically need elevated rights), failure modes on unsupported platforms, or what the returned state contains.

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 compact line with the resource stated first and the platform enumeration in a parenthetical. Nothing is padded, though the terseness tips into under-specification rather than economy.

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?

For a zero-parameter, read-only status tool the complexity is low, and the description covers the platform dimension. But with no annotations and no output schema, it should still say what "state" comprises and flag that results may require elevated privileges or be unavailable on some hosts.

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 nothing for the description to disambiguate; baseline 4 applies. The parenthetical does add the useful note that the backend varies by platform, which explains why no arguments are needed.

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 fragment names the resource and its content ("Firewall profile state") and enumerates the per-platform backends (win profiles / ufw / socketfilterfw), so an agent can tell roughly what comes back. However, it is a noun phrase with no verb and no statement of scope (profiles only? rule listings? enabled flag?), which keeps it in vague-purpose territory rather than a crisp verb+resource claim.

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?

There is no when-to-use guidance at all: no statement of which situations call for a firewall check, no mention that it complements siblings like sec.exposure or sec.listening, and no exclusions. The only implicit signal is that it is the sole firewall-oriented tool among the net/dns/lan/wifi/sec siblings.

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