get_filter_rule

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

Annotations already declare readOnlyHint=true and idempotentHint=true, confirming a safe read operation. The description adds useful context about the rule_id format (e.g., '*1' or '0') but does not disclose other behaviors such as error handling or response structure. This aligns with the annotations, so no contradiction.

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 long, front-loaded with the primary purpose, and includes a clearly formatted note for the rule_id parameter. No wasted 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?

For a simple get-by-ID tool, the description covers the purpose and key parameter. An output schema exists for return values, and annotations handle safety. It could be more complete by explicitly directing users to list_filter_rules for enumeration, but it is largely sufficient.

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. It provides meaningful guidance for rule_id, explaining that the ID comes from list output and giving examples. However, the optional 'device' parameter is not mentioned at all, leaving a gap in 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 states a specific verb and resource: 'Gets detailed information about a specific firewall filter rule.' This clearly distinguishes it from list_filter_rules and other filter rule tools by emphasizing 'specific'.

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 usage is implied by the purpose—use when you need details on a known rule. However, it doesn't explicitly mention when to use this over list_filter_rules or how to obtain the rule_id (beyond a note about its format). No exclusions or alternatives are provided.

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