create_dfw_rule

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

Annotations indicate readOnlyHint=false and destructiveHint=false, consistent with a write operation. The description adds no extra behavioral context (e.g., side effects, permissions) beyond parameter defaults. With annotations present, the bar is lower, but no additional value is provided.

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 front-loaded with a concise purpose statement and uses a structured parameter list. It is efficient but slightly long; could be trimmed without losing detail.

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 high parameter count (15), the description covers all inputs thoroughly with defaults and allowed values. However, it does not describe the output format or behavior on error, which is a gap. Output schema is absent, but the description could specify return value.

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%, but the description compensates fully with detailed explanations for each parameter, including allowed values and defaults (e.g., 'action: Firewall action — ALLOW, DROP, REJECT, or JUMP_TO_APPLICATION'). This adds significant meaning beyond the bare schema.

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?

Description starts with '[WRITE] Create a DFW rule under the specified policy.', clearly stating the action (create) and resource (DFW rule). This distinguishes it from sibling tools like create_dfw_policy or update_dfw_rule.

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?

While the description implies usage for creating DFW rules within a policy, it does not explicitly mention when not to use it or alternatives such as update or delete tools. The sibling context is available but not referenced.

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