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.
npx agentmods add skills/0xdarkmatter/claude-mods/cli-opsnpx skills add 0xDarkMatter/claude-mods --skill cli-opsgit clone --depth 1 https://github.com/0xDarkMatter/claude-modsWrote 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.
[](https://agentmods.dev/skills/0xdarkmatter/claude-mods/cli-ops)<a href="https://agentmods.dev/skills/0xdarkmatter/claude-mods/cli-ops"><img src="https://agentmods.dev/badge/skills/0xdarkmatter/claude-mods/cli-ops.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00053 | $0.04095 |
| Opus 5 | $0.00026 | $0.02048 |
| Sonnet 5 | $0.00011 | $0.00819 |
| Haiku 4.5 | $0.00005 | $0.00409 |
Grade A, and why
cli-ops 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 635 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLI Patterns for Agentic Workflows
Patterns for building CLI tools that AI assistants and power users can chain, parse, and rely on.
Philosophy
Build CLIs for agentic workflows - AI assistants and power users who chain commands, parse output programmatically, and expect predictable behavior.
Core Principles
| Principle | Meaning | Why It Matters |
|---|---|---|
| Self-documenting | --help is comprehensive and always current |
LLMs discover capabilities without external docs |
| Predictable | Same patterns across all commands | Learn once, use everywhere |
| Composable | Unix philosophy - do one thing well | Tools chain together naturally |
| Parseable | --json always available, always valid |
Machine consumption without parsing hacks |
| Quiet by default | Data only, no decoration unless requested | Scripts don't break on unexpected output |
| Fail fast | Invalid input = immediate error | No silent failures or partial results |
Design Axioms
- stdout is sacred - Only data. Never progress, never logging, never decoration.
- stderr is for humans - Progress bars, colors, tables, warnings live here.
- Exit codes have meaning - Scripts can branch on failure mode.
- Help includes examples - The fastest path to understanding.
- JSON shape is predictable - Same structure across all commands.
Command Architecture
Structural Pattern
<tool> [global-options] <resource> <action> [options] [arguments]
Every CLI follows this hierarchy:
<tool>
├── --version, --help # Global flags
├── auth # Authentication (if required)
│ ├── login
│ ├── status
│ └── logout
└── <resource> # Domain resources (plural nouns)
├── list # Get many
├── get <id> # Get one by ID
├── create # Make new (if supported)
├── update <id> # Modify existing (if supported)
├── delete <id> # Remove (if supported)
└── <custom-action> # Domain-specific verbs
What ships with it
4 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.
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.
- 4d ago First seen · 635 lines · 53 tokens per session scan A 95f8337f871f
cli-ops is a skill published in the GitHub repository 0xDarkMatter/claude-mods (32 stars, last pushed 11d ago), licensed MIT. It adds 53 tokens to every session and 4,095 once invoked, about $0.0003 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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