list

A command for listing sandboxes and showing their current status, runtime backend, and exposed ports. A sandbox is an isolated environment for running code, and a backend is the system that runs it.

In plain words
What is it for?
Use it to list all sandboxes or filter the results to those associated with the current Git project, including their Docker, Podman, Firecracker, or Apple backend and port mappings.
Why use it?
It makes it easier to see which sandboxes exist and whether they are running or stopped, without checking each one separately.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/thrashr888/agentkernel/list
Clone the repo
git clone --depth 1 https://github.com/thrashr888/agentkernel
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 328 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00328
Opus 5 $0.00000 $0.00164
Sonnet 5 $0.00000 $0.00066
Haiku 4.5 $0.00000 $0.00033

Measured yesterday against content hash 5d2b46af1da1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

list scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

docs/commands/list.md · 60 lines

What it actually says

agentkernel sandbox list

List all sandboxes and their status.

Usage

agentkernel sandbox list [OPTIONS]

Options

Option Description
--project Filter to sandboxes matching the current git project

Output

NAME                           STATUS     BACKEND   PORTS
my-project                     running    docker
claude-sandbox                 stopped    docker
web-app                        running    docker    8080:80, 3000:3000
myrepo-feature-auth            running    docker

Columns

Column Description
NAME Sandbox name
STATUS running or stopped
BACKEND Backend used: docker, podman, firecracker, apple
PORTS Port mappings (if any)

Examples

# List all sandboxes
agentkernel sandbox list

# Filter to sandboxes for the current git project
# (matches sandboxes whose name starts with the project directory name)
agentkernel sandbox list --project

# No sandboxes
$ agentkernel sandbox list
No sandboxes found.

Create one with: agentkernel sandbox create <name>

Notes

  • Lists sandboxes from all backends
  • Running status is checked live against the container runtime
  • Sandbox state is stored in ~/.local/share/agentkernel/sandboxes/
  • --project uses git rev-parse to detect the current project name and filters by prefix
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 60 lines · 0 tokens per session scan A 5d2b46af1da1

Subscribe to this mod's changes

list is a command published in the GitHub repository thrashr888/agentkernel (58 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 328 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.