A read-only tool that lists running Docker containers, including their status and port information.

Use it to inspect running containers, check whether they are active, and view their port details.

It lets you see what containers are active and how they are exposed without changing them.

docker-list — Skill by KeyArgo

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 skills/keyargo/custodian-kernel/docker-list

Any agent

npx skills add KeyArgo/custodian-kernel --skill docker-list

Clone the repo

git clone --depth 1 https://github.com/KeyArgo/custodian-kernel

Made for: Claude Code, Codex.

Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 302 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.

Model	Per session	Once invoked
Fable 5	$0.00012	$0.00302
Opus 5	$0.00006	$0.00151
Sonnet 5	$0.00002	$0.00060
Haiku 4.5	$0.00001	$0.00030

Measured 2d ago against content hash 0f49e7cfa942, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

docker-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 2d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/execute.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

docker-logs — 89% identical, 10 lines differ

custodian/bundled_skills/docker/docker-list/SKILL.md · 51 lines

What it actually says

Docker List

List running Docker containers with status and port info

Authority band

This tool runs under L0 authority in the Custodian kernel. Read-only; no real-world effects — always autonomous.

Inputs

Parameter	Type	Required	Description
(see execute.py for full schema)

Configuration

No additional configuration required — uses credentials already wired to Custodian.

Usage

custodian tools run docker-list --param value

Custodian governance

Every call to this tool passes through the Custodian kernel authority check before executing. The kernel verifies the current authority band, checks spending caps where applicable, logs the action to the OCSF audit trail, and escalates to a human operator if the action exceeds the declared band.

Adding this tool to any Hermes agent session requires no code changes — declare custodian-band: L0 in the SKILL.md frontmatter and the kernel wraps it automatically.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

scripts/execute.py 871 B runs code

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.

2d ago First seen · 51 lines · 12 tokens per session scan A 0f49e7cfa942

Subscribe to this mod's changes

docker-list is a skill published in the GitHub repository KeyArgo/custodian-kernel (118 stars, last pushed 11d ago), licensed MIT. It adds 12 tokens to every session and 302 once invoked, about $0.0001 per session on Opus 5. 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.

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