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lazyants
by lazyants

Update Firewall

hetzner_update_firewall
Idempotent

Update a Hetzner firewall's name and labels using its resource ID. Modify metadata for existing firewalls in your Hetzner Cloud.

Instructions

Update a firewall name or labels.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesResource ID
nameNoNew name for the firewall
labelsNoLabels as key-value pairs
Behavior3/5

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

Annotations already indicate non-readonly, non-destructive, idempotent, open world. The description adds nothing beyond stating the updatable fields. No behavioral details like whether labels merge or replace.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, zero waste. Efficiently conveys the core action.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple update with 3 parameters and no output schema, the description is minimally adequate. However, it omits details like whether labels are appended or replaced, which could affect usage.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with clear descriptions for each parameter. The description 'Update a firewall name or labels' adds no new meaning beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Update a firewall name or labels,' specifying the exact fields affected. It distinguishes from sibling tools like set_firewall_rules, which updates rules.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool vs. alternatives (e.g., set_firewall_rules for rules). The agent must infer context from the name.

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

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