# Install chamber with Homebrew, Nix

CLI for managing secrets through AWS SSM Parameter Store. Version 3.1.5 via Homebrew; verified 2026-07-27. Also installable with nix: nix profile install nixpkgs#chamber.

## Install

```sh
sudo av install brew:chamber
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install chamber
```

  Evidence: local Homebrew formula metadata

### Linux

- Nix (92%):

```sh
nix profile install nixpkgs#chamber
```

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

## Package facts

- **Package key:** brew:chamber
- **Package manager:** Homebrew
- **Version:** 3.1.5
- **Source summary:** CLI for managing secrets through AWS SSM Parameter Store
- **Homepage:** <https://github.com/segmentio/chamber>
- **Repository:** <https://github.com/segmentio/chamber>
- **Last updated:** 2026-07-27T19:20:59+02:00
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- chamber (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 3.1.5
## 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

- <https://github.com/segmentio/chamber#readme>
- <https://github.com/segmentio/chamber/releases>
- <https://api.github.com/repos/segmentio/chamber>


## Security Notes

narrow executable package without higher-risk signals.

- **Geiger risk:** green / low
- narrow executable package without higher-risk signals

## Other Package-Manager Records

- Nix - chamber: normalized package name match | nixpkgs package indexes: pkgs/by-name/ch/chamber/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1


## Combined YAML source

View the package source record on GitHub. [combined/chamber.yml](https://github.com/mxcl/pkgdb/blob/main/combined/chamber.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph