firewall_filter

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

With no annotations provided, the description carries the full burden, and it does disclose the key trait that this is read-only and never adds/modifies/removes rules. It stops there, saying nothing about permissions, pagination, or volume of results on a device with large rulesets.

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?

Two short sentences, front-loaded with the resource and followed by the safety constraint; nothing is padded or 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?

An output schema exists, so return values need no explanation, and the read-only statement is a useful addition. However, for a required-parameter query tool the agent still lacks guidance on obtaining a valid device_name and on how this differs from the other firewall listing tools.

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% and the single required parameter device_name carries no documentation in either schema or description. The description's "(chain, action, etc)" refers to output fields rather than explaining what device_name should contain or where to obtain it.

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 a specific verb+resource ("List IPv4 firewall filter rules") and disambiguates from the IPv6 counterpart by naming IPv4 explicitly. The parenthetical "(chain, action, etc)" hints at the returned fields, though it does not explicitly route the agent against firewall_nat or firewall_mangle siblings.

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?

No when-to-use guidance or alternatives are offered; the agent gets no hint that ipv6_firewall_filter exists for IPv6 rules or that firewall_nat/firewall_mangle cover other firewall tables. It only signals the read-only nature, not when this tool is the right pick.

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