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firewall_set

Change firewall configuration on an SFR NB6VAC fibre box to enable the firewall or block SMTP, ICMP ping, and Windows sharing.

Instructions

Modifie la configuration du pare-feu.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
activeNo
block_smtpNo
block_icmp_pingNo
block_windows_sharingNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

D1.7/5.0
Behavior1/5

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

No annotations are provided, so the description carries the full burden, yet it discloses nothing about behavior. It does not say whether this is a partial patch or a full replacement of the firewall config, whether omitted fields are left untouched or reset, what permissions are required, or whether changes are reversible.

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

Conciseness3/5

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

A single front-loaded sentence with no filler, so it is concise in form. But the brevity reflects under-specification rather than efficiency: for a four-parameter mutation tool the sentence is too small to carry its job.

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

Completeness1/5

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

A mutation tool with no annotations, no output schema, and zero parameter documentation leaves the agent without any of the information it needs to call this safely. Nothing about scope, semantics of the null defaults, or effects is conveyed.

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

Parameters1/5

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

All four parameters (active, block_smtp, block_icmp_ping, block_windows_sharing) have 0% schema description coverage, and the description mentions none of them. In particular it never explains the null default, which determines whether a setting is modified at all.

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

Purpose3/5

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

The description states a specific verb and resource ('Modifie la configuration du pare-feu'), so an agent knows it mutates firewall settings rather than reading them. However, it gives no indication of which settings are affected and does nothing to distinguish it from the sibling firewall_status.

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

Usage Guidelines1/5

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

There is no guidance on when to use this tool versus firewall_status or any other sibling, no prerequisites, and no conditions or exclusions. The agent is left to infer usage entirely from the name.

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