Containarium

v0.16.7 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 21d Virtualization

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

agent-native agentic-ai cloud-cost-efficiency dev-environment lxc lxc-container

+2 more

multi-tenant ssh

ReleasePort's take

Light signal

editorial:auto 13d

Release v0.16.7 adds three binaries—`containarium`, `mcp-server`, and `agent-box`—and enables MCP client integration via JSON configuration.

Why it matters: Three new executables are shipped; verify SHA256SUMS.txt checksums before deployment to ensure installation integrity.

Summary

AI summary

Three binaries introduced: containarium daemon/CLI, mcp-server admin tool, and agent-box in‑container MCP.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	MCP client can be wired into Claude Code via JSON configuration. MCP client can be wired into Claude Code via JSON configuration. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Agent-box can be invoked through SSH for in‑the‑box file and shell operations. Agent-box can be invoked through SSH for in‑the‑box file and shell operations. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Release includes three binaries: `containarium`, `mcp-server`, and `agent-box`. Release includes three binaries: `containarium`, `mcp-server`, and `agent-box`. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Low	Quick install script available for Linux hosts via curl pipe sudo bash. Quick install script available for Linux hosts via curl pipe sudo bash. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Feature	Low	Manual installation instructions given for any binary on any platform. Manual installation instructions given for any binary on any platform. Source: granite4.1:30b@2026-05-22-audit Confidence: low	—
Performance	Medium	Checksum verification via SHA256SUMS.txt for all binaries. Checksum verification via SHA256SUMS.txt for all binaries. Source: llm_adapter@2026-05-21 Confidence: low	—

Full changelog

Containarium v0.16.7

The open-source, self-hostable, agent-native sandbox.

Binaries

Three binaries ship in this release:

| Binary | Where it runs | What it does |
|---|---|---|
| containarium | The host (and your laptop, for the CLI) | The platform daemon + CLI. create, list, expose-port, ssh-config, etc. |
| mcp-server | Your laptop | The platform MCP — outside-the-box admin (create_container, list_containers, expose_port, list_backends). Wire it into Claude Code / Cursor. |
| agent-box | Inside each Containarium container | The in-the-box MCP — shell_exec, read_file, write_file, etc. Reached over stdio, typically via SSH. |

Quick install (Linux host)

curl -fsSL https://raw.githubusercontent.com/footprintai/containarium/main/hacks/install.sh | sudo bash

Manual install (any binary, any platform)

# containarium CLI / daemon (Linux x86_64 example)
curl -L -o /usr/local/bin/containarium \
  https://github.com/footprintai/containarium/releases/download/v0.16.7/containarium-linux-amd64
chmod +x /usr/local/bin/containarium

# platform MCP (your laptop, e.g. macOS arm64)
curl -L -o /usr/local/bin/mcp-server \
  https://github.com/footprintai/containarium/releases/download/v0.16.7/mcp-server-darwin-arm64
chmod +x /usr/local/bin/mcp-server

# agent-box (drop into your container image, Linux x86_64)
curl -L -o /usr/local/bin/agent-box \
  https://github.com/footprintai/containarium/releases/download/v0.16.7/agent-box-linux-amd64
chmod +x /usr/local/bin/agent-box

Verify checksums via SHA256SUMS.txt.

MCP client setup

Wire the platform MCP into Claude Code (~/.claude.json):

{
  "mcpServers": {
    "containarium": {
      "command": "/usr/local/bin/mcp-server",
      "env": {
        "CONTAINARIUM_SERVER_URL": "http://your-host:8080",
        "CONTAINARIUM_JWT_TOKEN": "<your-token>"
      }
    }
  }
}

Wire agent-box for in-the-box file/shell ops:

{
  "mcpServers": {
    "containarium-box": {
      "command": "ssh",
      "args": ["user@your-box", "agent-box"]
    }
  }
}

See README.md for the full agent-native walkthrough.

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