Create Firewall

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

Annotations indicate a write operation (readOnlyHint=false) and nondestructive (destructiveHint=false). The description adds no extra behavioral details beyond the annotations, such as idempotency, side effects, or error conditions. With openWorldHint=true, the agent might expect unknown side effects, but the description doesn't clarify.

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 a single concise sentence without redundancy. It gets the point across efficiently, but could be slightly more informative without becoming verbose.

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 complexity (nested objects, 4 parameters, no output schema), the description is insufficient. It does not explain what the response contains, whether creation succeeds immediately, or any constraints like name uniqueness. For a creation tool, more context is expected.

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 coverage is 100%, meaning every parameter has a description in the schema. The tool description merely echoes that rules and apply_to are optional, adding no new semantic nuance. Baseline 3 is appropriate.

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 states 'Create a new firewall with optional rules and resource assignments.' This clearly identifies the verb (create) and resource (firewall), and distinguishes from siblings like hetzner_apply_firewall (which applies existing firewalls) and hetzner_set_firewall_rules (which modifies 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?

No guidance is provided on when to use this tool versus alternatives such as hetzner_apply_firewall or hetzner_set_firewall_rules. The description lacks any prerequisites, exclusions, or context for choosing this action.

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