install

Additional install commands

macOS

Homebrewverified · 100%

brew install chamber

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#chamber

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

overview

Package summary

CLI for managing secrets through AWS SSM Parameter Store

Project links

Commands and aliases

chamber

history

Project history and usage

Chamber is Segment's CLI for managing secrets in AWS Systems Manager Parameter Store. It stores values under service/key paths and can inject them into process environments for application startup.

Project history

The public repository was created in June 2017 and v1.0.0 was released two days later. The README frames Chamber as a tool for managing secrets through SSM Parameter Store and documents AWS IAM and KMS requirements.

The README records important compatibility milestones: version 2.0 moved to Parameter Store's path-based API by default, and version 3.0 reserved the _chamber service name for internal use.

Adoption history

Chamber is packaged by Homebrew and Nix according to the input package facts, while upstream GitHub releases provide the main release channel. The README also recommends use with aws-vault, showing how it fits into AWS operator workflows.

How it is used

Common commands write, read, list, tag, export, import, and show history for secrets. The exec command loads secrets from one or more services, converts secret keys to environment variable names, and runs a child process with those values.

Why package nerds care

Chamber is significant because it made AWS SSM Parameter Store usable as a lightweight secrets backend from a single Go CLI. For package managers, it is the kind of small operational binary that replaced custom shell glue around AWS APIs.

Timeline

2017: GitHub repository created.
2017: v1.0.0 published on GitHub releases.
2018: README documents version 2.0 path-based Parameter Store behavior.
2025: v3.1.x releases continue maintenance.
2026: v3.1.5 published on GitHub releases.

Related projects

AWS SSM Parameter Store is the storage backend Chamber manages.
AWS KMS is used for encryption key configuration in the documented workflow.
aws-vault is recommended by the README as one way to provide AWS credentials safely.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

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.

executables

Installed executables

Command	Kind	Exposure	Note
`chamber`	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 version3.1.5

manager updated

local dataok

upstreamcurrent

latest detectedv3.1.5

https://github.com/segmentio/chamber

infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package key	brew:chamber
Version	3.1.5
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/chamber
Homepage	https://github.com/segmentio/chamber
Repository	https://github.com/segmentio/chamber
Upstream docs	https://github.com/segmentio/chamber#readme
License	MIT
Source archive	https://github.com/segmentio/chamber/archive/refs/tags/v3.1.5.tar.gz
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	chamber
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%

chamber

nix profile install nixpkgs#chamber

normalized package name match
Matched by: Chamber

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/ch/chamber/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/chamber.yml

Used sources

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

Install chamber with Homebrew, Nix