install

Additional install commands

macOS

Homebrewverified · 100%

brew install fence

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#fence

nixpkgs package indexes · pkgs/by-name/fe/fence/package.nix · source: api.github.com

overview

Package summary

Lightweight sandbox for commands with network and filesystem restrictions

Project links

Commands and aliases

fence

history

Project history and usage

Fence is a command sandbox and permission layer for running semi-trusted commands with default-deny network access and configurable filesystem and command rules.

Project history

The official README states that Fence moved from github.com/Use-Tusk/fence to github.com/fencesandbox/fence, with migration instructions for Homebrew tap users and Go installs. GitHub releases show an initial v0.1.0 release in December 2025 and frequent v0.1.x releases through June 2026.

The documentation positions Fence as a host-native sandbox rather than a container or VM. On macOS it uses sandbox-exec; on Linux it uses bubblewrap with Landlock and seccomp.

Adoption history

Fence's official README emphasizes AI coding-agent workflows and names Claude Code, Codex, Amp, Gemini CLI, GitHub Copilot, OpenCode, and Factory CLI as compatible commands. Packaging is still young, with Homebrew tap, Nix, curl installer, Go install, and source builds documented by upstream.

How it is used

Basic usage wraps a command with network access blocked by default. Users can apply templates, monitor blocked requests, deny dangerous commands, configure filesystem read/write rules, and inspect the merged config with fence config show.

Why package nerds care

Fence is significant as a post-agent-era CLI package: instead of being an agent, package manager, or container runtime, it wraps arbitrary developer commands with reusable policy. That makes it relevant to package installation scripts, build scripts, CI jobs, and coding-agent sessions.

Timeline

2025: v0.1.0 released on 2025-12-19.
2026: Project README documents migration from Use-Tusk/fence to fencesandbox/fence.
2026: v0.1.61 released on 2026-06-22.

Related projects

The README credits Anthropic's sandbox-runtime as inspiration.
bubblewrap, Landlock, seccomp, and macOS sandbox-exec are underlying or related sandboxing technologies.

Sources

security posture

No protected-tool coverage found yet

No matching local secret-handling manifest was found for fence. Nucleus package metadata is still published here so future coverage has a stable package URL.

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix: ./fence.jsonc./fence.json~/.config/fence/fence.jsonc~/.config/fence/fence.json

executables

Installed executables

Command	Kind	Exposure	Note
`fence`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version0.1.62

manager updated2026-07-04

local dataok

upstreamcurrent

latest detectedv0.1.62

https://github.com/fencesandbox/fence

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:fence
Version	0.1.62
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/fence
Homepage	https://github.com/fencesandbox/fence
Repository	https://github.com/fencesandbox/fence
Upstream docs	https://fencesandbox.com/docs
License	Apache-2.0
Source archive	https://github.com/fencesandbox/fence/archive/refs/tags/v0.1.62.tar.gz
Last updated	2026-07-04T17:45:23Z
Pulse	updated
Build dependencies	go
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	fence
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

fence

nix profile install nixpkgs#fence

normalized package name match
Matched by: Fence

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/fe/fence/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/fence.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install fence with Homebrew, Nix