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 skills add vibeeval/vibecosystem --skill cli-referencegit clone --depth 1 https://github.com/vibeeval/vibecosystemWrote 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/vibeeval/vibecosystem/cli-reference)<a href="https://agentmods.dev/skills/vibeeval/vibecosystem/cli-reference"><img src="https://agentmods.dev/badge/skills/vibeeval/vibecosystem/cli-reference/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.
<a href="https://agentmods.dev/skills/vibeeval/vibecosystem/cli-reference"><img src="https://agentmods.dev/badge/skills/vibeeval/vibecosystem/cli-reference.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00017 | $0.02127 |
| Opus 5 | $0.00009 | $0.01064 |
| Sonnet 5 | $0.00003 | $0.00425 |
| Haiku 4.5 | $0.00002 | $0.00213 |
Grade A, and why
cli-reference 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 5d 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.
This is a copy
89% identical to cli-reference — 454 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLI Reference
Complete reference for Claude Code command-line interface.
When to Use
- "What CLI flags are available?"
- "How do I use headless mode?"
- "Claude in automation/CI/CD"
- "Output format options"
- "System prompt via CLI"
- "How do I spawn agents properly?"
Core Commands
| Command | Description | Example |
|---|---|---|
claude |
Start interactive REPL | claude |
claude "query" |
REPL with initial prompt | claude "explain this project" |
claude -p "query" |
Headless mode (SDK) | claude -p "explain function" |
cat file | claude -p |
Process piped content | cat logs.txt | claude -p "explain" |
claude -c |
Continue most recent | claude -c |
claude -c -p "query" |
Continue via SDK | claude -c -p "check types" |
claude -r "id" "query" |
Resume session | claude -r "auth" "finish PR" |
claude update |
Update version | claude update |
claude mcp |
Configure MCP servers | See MCP docs |
Session Control
| Flag | Description | Example |
|---|---|---|
--continue, -c |
Load most recent conversation | claude --continue |
--resume, -r |
Resume session by ID/name | claude --resume auth-refactor |
--session-id |
Use specific UUID | claude --session-id "550e8400-..." |
--fork-session |
Create new session on resume | claude --resume abc --fork-session |
Headless Mode (Critical for Agents)
| Flag | Description | Example |
|---|---|---|
--print, -p |
Non-interactive, exit after | claude -p "query" |
--output-format |
text, json, stream-json |
claude -p --output-format json |
--max-turns |
Limit agentic turns | claude -p --max-turns 100 "query" |
--verbose |
Full turn-by-turn output | claude --verbose |
--dangerously-skip-permissions |
Skip permission prompts | claude -p --dangerously-skip-permissions |
--include-partial-messages |
Include streaming events | claude -p --output-format stream-json --include-partial-messages |
--input-format |
Input format (text/stream-json) | claude -p --input-format stream-json |
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.
- 5d ago First seen · 228 lines · 17 tokens per session scan A a4cf1c1628e9
cli-reference is a skill published in the GitHub repository vibeeval/vibecosystem (529 stars, last pushed 1mo ago), licensed MIT. It adds 17 tokens to every session and 2,127 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to cli-reference, differing in 454 lines, and is treated as a copy.
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Use before starting work in a domain you don't know well, to surface the "unknown unknowns" — the things you don't even know to ask about — and learn just enough to prompt and decide well. Implements the "blind spot pass" pattern from Anthropic's Fable "finding your unknowns" field guide. Triggers when you say "I'm…
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Use when searching, installing, or improving AI skills and prompts via prompts.chat or skills.sh. Triggers on skill search, prompt lookup, install skill, improve prompt, prompts.chat.
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Quick-reference card for all caveman modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /caveman-help, "caveman help", "what caveman commands", "how do I use caveman".