A command reference for Ludus, a system for managing virtual computer labs from a terminal. It explains commands, options, and workflows for deploying and managing lab environments.

Use it to configure and deploy ranges, watch logs, check status, manage templates, enable testing mode, handle users and groups, and run diagnostics.

It removes the need to remember command syntax and flags when setting up ranges, checking progress, or diagnosing failures.

ludus-cli — Skill for Codex by badsectorlabs/ludus-skills

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.

Any agent

npx skills add badsectorlabs/ludus-skills --skill ludus-cli

Clone the repo

git clone --depth 1 https://github.com/badsectorlabs/ludus-skills

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/badsectorlabs/ludus-skills/ludus-cli/github.svg)](https://agentmods.dev/skills/badsectorlabs/ludus-skills/ludus-cli)

Your own site

<a href="https://agentmods.dev/skills/badsectorlabs/ludus-skills/ludus-cli"><img src="https://agentmods.dev/badge/skills/badsectorlabs/ludus-skills/ludus-cli/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/badsectorlabs/ludus-skills/ludus-cli"><img src="https://agentmods.dev/badge/skills/badsectorlabs/ludus-skills/ludus-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 528 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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 5.1	$0.00054	$0.00528
Opus 5.5	$0.00022	$0.00211
Sonnet 5.5	$0.00011	$0.00106
Haiku 4.5	$0.00005	$0.00053

Measured 2mo ago against content hash 97d380104520, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ludus-cli 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 2mo ago.

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.

skills/ludus-cli/SKILL.md · 64 lines

What it actually says

Ludus CLI Reference

Reference for Ludus CLI command syntax, flags, and workflows. Use this when users need to run CLI commands directly or when the Ludus API is unavailable.

Key Concepts

Command Pattern

ludus COMMAND [SUBCOMMAND] [ARGS] [--FLAGS]

Global Flags (Available on All Commands)

--json - Format output as JSON
--url string - Server URL (default: https://198.51.100.1:8080)
-u, --user string - Impersonate user (admin only)
-r, --range string - Target range ID
--proxy string - HTTP(S) proxy URL
--verbose - Verbose output
--verify - Verify HTTPS certificate

All flags can be set via environment variables: LUDUS_FLAG_NAME (uppercase).

Common Workflows

Initial Setup:

ludus apikey                    # Store API key
ludus templates list            # Check available templates
ludus range config get example  # Get example config

Deploy a Range:

ludus range config set -f config.yml  # Set config
ludus range deploy                     # Full deploy
ludus range logs -f                    # Watch progress
ludus range status                     # Check status

Testing Mode:

ludus testing start                      # Snapshot + block internet
ludus testing allow -d example.com       # Allow a domain
ludus testing stop                       # Revert snapshots + restore internet

Template Management:

ludus templates add -d ./my-template   # Add template
ludus templates build                   # Build all unbuilt
ludus templates build -n name1,name2   # Build specific
ludus templates logs -f                 # Watch build progress

References

Use references/commands.md for the complete command reference with subcommands, flags, and examples.
Use https://docs.ludus.cloud/docs/cli as the authoritative source for CLI behavior and changes.

Files

What ships with it

2 files 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.

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.

2mo ago First seen · 64 lines · 54 tokens per session scan A 97d380104520

Subscribe to this mod's changes

ludus-cli is a skill published in the GitHub repository badsectorlabs/ludus-skills (10 stars, last pushed 2mo ago), licensed MIT. It adds 54 tokens to every session and 528 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

ludus-cli next to 6 skills from other repositories
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ludus-clibadsectorlabs/ludus-skills	Skill	10	2mo ago	MIT	A	54	Codex
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local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	today	MIT	A	200	Claude Code, Codex
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