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lucamarien

OPNsense MCP Server

by lucamarien

opn_crowdsec_status

Get CrowdSec security engine status, active decisions count, and alerts count to monitor threat protection.

Instructions

Get CrowdSec security engine status and active decisions summary.

Use this when you need to check if CrowdSec is running, see how many active security decisions (bans/captchas) are in effect, and get a quick overview of the threat protection state. Note: Requires the CrowdSec plugin (os-crowdsec). Returns: dict with 'service_status', 'decisions_count', and 'alerts_count'.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior4/5

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

No annotations, but description clearly states it's a read operation returning specific keys. Discloses plugin dependency. Does not detail any side effects (likely none), which is fine.

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?

Three succinct sentences: purpose, usage guidance, return info. No wasted words, front-loaded.

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

Completeness5/5

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

Given no parameters and presence of output schema, description covers all needed: purpose, when to use, prerequisite, return keys. Complete for its complexity.

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

Parameters4/5

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

No parameters. Schema coverage is 100%, so description need not add param info. Baseline 4 for zero-param tools.

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?

Clearly states it retrieves CrowdSec status and decisions summary. Distinguished from sibling opn_crowdsec_alerts by focusing on status and total counts, not individual alerts.

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

Usage Guidelines4/5

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

Explicitly says when to use: to check if CrowdSec is running, see active decisions count, and get threat overview. Mentions plugin requirement. Could mention when not to use, but overall helpful.

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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