How do I install the Little Snitch skill?

Run npx skillmds@latest add dvcrn/little-snitch in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Little Snitch safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Little Snitch?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Little Snitch free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Little Snitch?

dvcrn (@dvcrn) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Little Snitch by dvcrn — Agent Skill

Name: Little Snitch
Rating: 4.666666666666667 (3 reviews)
Author: dvcrn

Little Snitch

Control Little Snitch firewall on macOS. View logs, manage profiles and rule groups, monitor network traffic. Use when the user wants to check firewall activity, enable/disable profiles or blocklists, or troubleshoot network connections.

dvcrn Updated Sep 8, 2026 32 repo stars

File contents

Little Snitch CLI

Control Little Snitch network monitor/firewall on macOS.

Setup

Enable CLI access in Little Snitch → Preferences → Security → Allow access via Terminal

Once enabled, the littlesnitch command is available in Terminal.

⚠️ Security Warning: The littlesnitch command is very powerful and can potentially be misused by malware. When access is enabled, you must take precautions that untrusted processes cannot gain root privileges.

Reference: https://help.obdev.at/littlesnitch5/adv-commandline

Commands

Command	Root?	Description
`--version`	No	Show version
`restrictions`	No	Show license status
`log`	No	Read log messages
`profile`	Yes	Activate/deactivate profiles
`rulegroup`	Yes	Enable/disable rule groups & blocklists
`log-traffic`	Yes	Print traffic log data
`list-preferences`	Yes	List all preferences
`read-preference`	Yes	Read a preference value
`write-preference`	Yes	Write a preference value
`export-model`	Yes	Export data model (backup)
`restore-model`	Yes	Restore from backup
`capture-traffic`	Yes	Capture process traffic

Examples

View Recent Logs (no root)

littlesnitch log --last 10m --json

Stream Live Logs (no root)

littlesnitch log --stream

Check License Status (no root)

littlesnitch restrictions

Activate Profile (requires root)

sudo littlesnitch profile --activate "Silent Mode"

Deactivate All Profiles (requires root)

sudo littlesnitch profile --deactivate-all

Enable/Disable Rule Group (requires root)

sudo littlesnitch rulegroup --enable "My Rules"
sudo littlesnitch rulegroup --disable "Blocklist"

View Traffic History (requires root)

sudo littlesnitch log-traffic --begin-date "2026-01-25 00:00:00"

Stream Live Traffic (requires root)

sudo littlesnitch log-traffic --stream

Backup Configuration (requires root)

sudo littlesnitch export-model > backup.json

Log Options

Option	Description
`--last <time>[m\|h\|d]`	Show entries from last N minutes/hours/days
`--stream`	Live stream messages
`--json`	Output as JSON
`--predicate <string>`	Filter with predicate

Notes

macOS only
Many commands require sudo (root access)
Profiles: predefined rule sets (e.g., "Silent Mode", "Alert Mode")
Rule groups: custom rule collections and blocklists

---name: little-snitchdescription: Control Little Snitch firewall on macOS. View logs, manage profiles and rule groups, monitor network traffic. Use when the user wants to check firewall activity, enable/disable profiles or blocklists, or troubleshoot network connections.---# Little Snitch CLIControl Little Snitch network monitor/firewall on macOS.## SetupEnable CLI access in **Little Snitch → Preferences → Security → Allow access via Terminal**Once enabled, the `littlesnitch` command is available in Terminal.⚠️ **Security Warning:** The littlesnitch command is very powerful and can potentially be misused by malware. When access is enabled, you must take precautions that untrusted processes cannot gain root privileges.Reference: https://help.obdev.at/littlesnitch5/adv-commandline## Commands| Command | Root? | Description ||---------|-------|-------------|| `--version` | No | Show version || `restrictions` | No | Show license status || `log` | No | Read log messages || `profile` | Yes | Activate/deactivate profiles || `rulegroup` | Yes | Enable/disable rule groups & blocklists || `log-traffic` | Yes | Print traffic log data || `list-preferences` | Yes | List all preferences || `read-preference` | Yes | Read a preference value || `write-preference` | Yes | Write a preference value || `export-model` | Yes | Export data model (backup) || `restore-model` | Yes | Restore from backup || `capture-traffic` | Yes | Capture process traffic |## Examples### View Recent Logs (no root)```bashlittlesnitch log --last 10m --json```### Stream Live Logs (no root)```bashlittlesnitch log --stream```### Check License Status (no root)```bashlittlesnitch restrictions```### Activate Profile (requires root)```bashsudo littlesnitch profile --activate "Silent Mode"```### Deactivate All Profiles (requires root)```bashsudo littlesnitch profile --deactivate-all```### Enable/Disable Rule Group (requires root)```bashsudo littlesnitch rulegroup --enable "My Rules"sudo littlesnitch rulegroup --disable "Blocklist"```### View Traffic History (requires root)```bashsudo littlesnitch log-traffic --begin-date "2026-01-25 00:00:00"```### Stream Live Traffic (requires root)```bashsudo littlesnitch log-traffic --stream```### Backup Configuration (requires root)```bashsudo littlesnitch export-model > backup.json```## Log Options| Option | Description ||--------|-------------|| `--last <time>[m\|h\|d]` | Show entries from last N minutes/hours/days || `--stream` | Live stream messages || `--json` | Output as JSON || `--predicate <string>` | Filter with predicate |## Notes- macOS only- Many commands require `sudo` (root access)- Profiles: predefined rule sets (e.g., "Silent Mode", "Alert Mode")- Rule groups: custom rule collections and blocklists

Frequently asked questions