Mastering Claude Code Skills (This Changes EVERYTHING)

Description

Claude Skills are WAY better than I thought - In this video I talk about how to create your own Agent skills, which can be used with whatever you want to - whether that's Codex, Claude Code, or otherwise Thanks for watching and PEACE Hamish Get the GitHub: https://github.com/IncomeStreamSurfer/claude-skills-collection 🛠️ I'll show you how to create a custom Claude Code skill for building OpenAI Agent SDK agents. This skill works in Cursor, Codex, VS Code, Gemini CLI, and more. Skills are an open format that lets you give any AI coding assistant specialized knowledge. Instead of copying documentation every time, you create the skill once and use it forever. ⚡ What we build in this video: → A complete OpenAI Agent SDK skill from scratch → Includes web search, code interpreter, image generation, file search → Uses GPT-5 Nano (insanely cheap: $0.40 per million output tokens) → Live test: URL finder agent that actually works 🧠 Key clarification from yesterday's video: → GPT-5 Nano alone is NOT better than Sonnet 4.5 → GPT-5 Nano + Agent SDK IS better than Sonnet 4.5 without agentic flow → Wrapping workflows with Agent SDK increases intelligence dramatically 💡 Tips for creating skills: → Use LLMs.txt files (most sites have them now) → Use hashtags to split large documentation for Claude → If pasting fails, convert to .txt and drag into the terminal → Add the skill to your personal skills folder for global access 📊 Real example: → Built a URL finder agent in minutes → Takes keyword + URL, outputs 10 relevant URLs from that site → This same task took me 3 months to build a year ago The skill will be on GitHub for anyone to use. Start building agents, guys. It's stupidly cheap now. Keywords claude code skills, agent skills tutorial, openai agent sdk, create claude skill, gpt 5 nano agents, claude code tutorial, ai coding skills, llms.txt, agent sdk skill, claude code agents, cursor skills, codex skills, cheap ai agents, build ai agents, openai web search, claude code tips, agent development, skill creation, gpt 5 nano pricing, ai workflow automation Hashtags #claudecode #agentskills #openai #agentsdk #gpt5nano #aitools #aidevelopment #coding #tutorial #cursor #vscode #aiagents #webdevelopment #techtuorial #llm #cheapai #buildinpublic #devtools #automation #programming Have a SaaS or Web App idea? Get it built today - https://calendar.app.google/9N6RQjjNgyn3BWABA Have a business and Need SEO? Talk to us today - https://calendar.app.google/DrfDvjCEQbbfw7vJ9 Join the skool: https://www.skool.com/iss-ai-automation-school-6342/about Try Z.AI GLM4.6 Coding plan: https://z.ai/subscribe?ic=FEG0YCC6XE Try Grove: https://seogrove.ai Try Harbor: https://harborseo.ai Try Bright Data: https://brightdata.com/?promo=incomestreamsurfers Subscribe to my other channel :) https://www.youtube.com/@shopifysurfers 00:00 - Creating an Agent Skill for Claude Code 00:19 - What Are Skills? (Works Everywhere) 00:47 - Getting the Skills Documentation 01:03 - Harbor SEO Sponsor Break 02:43 - Starting the Skill Creation Process 03:04 - Finding the LLMs.txt Resource 03:52 - Workaround: Pasting Large Documents 05:02 - Using Hashtags to Split Large Files 06:14 - Why I'm Making This Skill (GPT-5 Nano + Agent SDK) 07:27 - Clarifying Yesterday's Video: Agents Make Cheap Models Smart 08:28 - Reviewing the Generated Skill 09:05 - Web Search vs Traditional Scraping 09:40 - Installing and Activating the Skill 10:27 - Live Test: Building a URL Finder Agent 11:44 - First Run: Found URLs but Wrong Source 12:50 - Second Run: Perfect Results in Seconds 13:36 - This Took Me 3 Months a Year Ago 14:02 - Why You Need to Get Into Agents 14:52 - GPT-5 Nano Pricing is Absurd