How do I install the Knowledge skill?

Run npx skillmds@latest add x-cmd/knowledge in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Knowledge safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Knowledge?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Knowledge free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Knowledge?

x-cmd (@x-cmd) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Knowledge

Name: Knowledge
Author: x-cmd

Search Hacker News, Wikipedia, DuckDuckGo, RFC docs, and Stack Exchange from the command line. Zero barrier — install x-cmd and start searching. Use for "search", "hn", "hacker news", "wikipedia", "ddgo", "duckduckgo", "rfc", "stack overflow".

x-cmd ffffc86 1.3 KB Updated Sep 17, 2026

Coding & Dev Tools

Install

Press C to copy

$ npx skillmds@latest add x-cmd/knowledge

Installs into ~/.claude/skills (or .claude/skills inside a project). Restart Claude Code to pick it up.

Download SKILL.md

＋ Add to collection

README badge

[![SkillMD](https://skillmd.com/badge/x-cmd/knowledge.svg)](https://skillmd.com/skills/x-cmd/knowledge)

Trust & safety

Audits pending

Not yet audited · commit ffffc86

Works with: Claude Code Claude.ai OpenAI Codex +

File contents

knowledge — skill0

Search the internet's knowledge sources from the command line.

Quick Start

# Install x-cmd
eval "$(curl https://get.x-cmd.com)"

# Hacker News top posts
x hn top

# Wikipedia search
x wkp "artificial intelligence"

# DuckDuckGo search
x ddgo "rust programming language"

# RFC documents
x rfc 2616

# Stack Exchange search
x se "how to exit vim"

What's Available

Command	Source	Example
`x hn top`	Hacker News	Top 10 trending posts
`x hn new`	Hacker News	Latest submissions
`x wkp <query>`	Wikipedia	Search articles
`x ddgo <query>`	DuckDuckGo	Web search
`x rfc <number>`	RFC docs	Read RFC specifications
`x se <query>`	Stack Exchange	Search Q&A

This skill0 grows

Starting with the essentials. Will add:

More sources (Project Gutenberg, arxiv)
Advanced search patterns
Result filtering and formatting tips

Full experience

x knowledge --help for all options after installing x-cmd.

x-cmd/x-cmd/tree/main/mod/skill0/lib/skill0/data/knowledge commit ffffc867fc

Frequently asked questions

npx skillmds@latest add x-cmd/knowledge