I’m not a Python developer, and I still managed to build a working SEO checker for my blog in about 20 minutes. This claude code tutorial shows you exactly how. This guide shows you exactly how.
This claude code tutorial focuses on the simplest beginner workflow: describe a small tool in plain English, let Claude Code build it, then improve it step by step. If you can describe a small, concrete problem clearly, Claude Code can often help you build a first working version.
This guide assumes Claude Code is already installed. If not, start with my installation guide — it covers what to do when the official method doesn’t work.
What This Tutorial Covers — And What It Doesn’t
What this covers:
- Building a real, usable tool from scratch using only natural language
- The exact prompts I used, step by step
- How to modify and improve your tool through conversation
- What I learned about working with Claude Code effectively
What this doesn’t cover:
- Installation — see my Install Claude Code guide
- Pricing — see my Claude Code Pricing breakdown
- Alternatives — see my Claude Code Alternatives comparison
- Student discounts — see my Claude Student Discount guide
This is the hands-on part. Let’s build something.
Claude Code Basics — Before Your First Project
If you’ve never used Claude Code before, here are the essential commands to know before starting any claude code tutorial project:
| Command | What it does |
|---|---|
claude | Starts a Claude Code session in your current folder |
claude -v | Shows your installed version |
/help | Lists all available commands inside a session |
/status | Checks your remaining usage allocation |
/cost | Shows token usage for the current session |
/doctor | Diagnoses common setup issues |
Updates: If you installed via the native installer, Claude Code updates automatically in the background. If you used WinGet or Homebrew, you’ll need to update manually (winget upgrade Anthropic.ClaudeCode or brew upgrade --cask claude-code). Check the official setup docs for details.
Safety tip for beginners: Start your first project in a new, empty folder — not inside an existing project with important files. Claude Code can create and modify files, so it’s safest to experiment somewhere with nothing to lose. Once you’re comfortable with how it works, you can point it at real projects.
From My First Project to This One — What Changed
A few months ago, I tried Claude Code for the first time. I asked it to analyze a folder and generate an HTML report. It worked — a program appeared in 34 seconds, and I was genuinely shocked.
But that project was more of a “wow, it works” moment. The folder analyzer wasn’t something I’d actually use again. This time, I wanted to build something I’d keep using — a tool that solves a real problem in my daily workflow.
The difference between then and now isn’t Claude Code. It’s me. Back then, I didn’t know what to ask for. Now, after months of running a blog and checking SEO manually, I know exactly what I need. That turns out to be the real skill with Claude Code: not coding, but knowing what you want.
The Project — A Blog SEO Checker
For this claude code tutorial, I picked a project I’d actually use. Every time I publish a blog post, I check the same things: Is the title under 60 characters? Is there a meta description? Is there exactly one H1? Do all images have alt text? How many internal and external links are there?
I do this manually or rely on Yoast’s feedback inside WordPress. But I wanted a standalone tool that checks everything at once and generates a visual report I can review at a glance.
What the tool does:
- Takes any URL as input
- Fetches the page and analyzes its HTML
- Checks 7 SEO elements: title, meta description, H1, H2 structure, image alt text, internal links, external links
- Generates a dark-themed HTML report with green checkmarks and red X marks
- Opens the report automatically in the browser
Here’s how I built it.
Step 1 — Describing What I Want
I opened Claude Code in the terminal and typed this prompt:
Build me a Python script called seo_checker.py that:
1. Takes a URL as input
2. Fetches the page
3. Checks these SEO elements:
- Title tag (exists? length under 60 chars?)
- Meta description (exists? length under 160 chars?)
- H1 tag (exactly one?)
- H2 tags (lists all of them)
- Images without alt text (lists them)
- Internal links (count)
- External links (count)
4. Generates an HTML report that opens in the browser
5. Uses green checkmarks for passing checks and red X for failing ones
Make it easy to run: python seo_checker.py https://example.com
◆ Prompt screen
Notice what’s happening here: I’m not writing code. I’m writing a specification — a list of what the tool should do, in plain English. This is the part that matters. The more clearly you describe what you want, the better Claude Code builds it. This is the core skill in any claude code tutorial — writing a good specification.
Tip I wish I’d known earlier: I actually designed this prompt in Claude’s web chat first, then pasted it into the terminal. If the terminal feels intimidating, start your thinking in the web interface where it’s more comfortable — then bring the finished prompt to Claude Code.
Step 2 — Claude Code Builds It
Claude Code immediately started writing the script. Within about 38 seconds, it generated a 223-line Python file.
◆ Permission request
This is Claude Code’s permission system. In the default permission mode I used, Claude Code asks before creating or editing any file. I clicked “Yes.” I didn’t review the code line by line, but I did verify the output and the generated files before trusting the result.
◆ Script complete
Claude Code told me the script was ready, showed me how to install the dependencies, and gave me the exact command to run it. In my test, it produced the first working script in about 38 seconds — though your time will vary depending on your setup and how specific your prompt is.
Step 3 — Running the Tool on My Blog
I asked Claude Code to run the script on one of my own blog posts:
Run the script on https://k-antenna.com/claude-code-pricing/
◆ Running the script
Claude Code ran the command, installed the required Python packages automatically (this assumes Python is already available on your system), fetched my blog post, analyzed the SEO elements, and opened the HTML report in my browser.
◆ Run complete
◆ The result
This is the SEO report for my Claude Code Pricing post. A few things jumped out immediately:
- Title Tag: ❌ — 72 characters, over the recommended 60. Worth noting: this checker uses a simple character count, while Yoast uses pixel width — so 72 characters might actually display fine in Google results. This is one of the tool’s limitations. It flags things based on rough rules, not nuanced SEO analysis.
- Meta Description: ✅ — 131 characters, within the 160 limit.
- H1: ✅ — Exactly one, matching my SEO title.
- H2 Tags: — All 9 listed. Useful for checking structure at a glance.
- Images: ✅ — All 4 images have alt text.
- Links: — 19 internal, 16 external. Good to see the ratio.
This is my blog, so every data point actually means something to me. That’s the difference between a demo and a tool you’d actually use.
Step 4 — Adding Features Through Conversation
The first version worked, but I wanted more. So I typed three lines:
Add these features to the SEO checker:
1. Show the actual title and meta description text, not just pass/fail
2. Add a "word count" check for the page body
3. Add an overall SEO score (percentage of checks passed)
◆ Change request
◆ Permission for edit
Again, Claude Code asked permission before editing the file. I said yes. About 90 seconds later, it re-ran the script and opened the updated report.
◆ Changes complete
◆ The updated result
Three lines of plain English. That’s all it took. The updated report now shows:
- 86% Overall SEO Score — with a green progress ring showing 6 out of 7 checks passed
- Title and Meta Description text — displayed in styled preview boxes so I can read the actual content
- Word Count: 2,090 words — pass, since the minimum is 300
The design even changed — styled preview boxes for the title and meta description, a circular progress indicator for the score. I didn’t ask for any of that design work. Claude Code decided how to present the new information visually, and it looked good.
The Full Picture — What I Built in 20 Minutes
From the first prompt to the final version with all features:
Time: About 20 minutes total (including the feature additions) Prompts written: 3 (initial build, run command, feature additions) Lines of code I wrote: 0 Lines of code Claude Code wrote: 223+ (original) → expanded with score, previews, word count
A working SEO checker that I can run on any URL and get a visual report in seconds. It’s not going to replace Yoast for daily use — opening a terminal and typing a URL every time is more friction than checking a sidebar inside WordPress. But as a standalone audit tool that works on any URL (not just my own WordPress posts), it does something Yoast can’t.
What I Learned About Using Claude Code Effectively
After completing this claude code tutorial project and my earlier folder analyzer, a few patterns are becoming clear.
Design your prompt in the web chat, execute in the terminal. If the blank terminal cursor intimidates you, open Claude’s web interface first. Have a conversation about what you want to build. Once the specification is clear, paste it into Claude Code. This two-step workflow removes the pressure of getting the prompt perfect on the first try.
Be specific about outputs, not about code. I never said “use BeautifulSoup” or “create a tempfile.” I said “check if the title is under 60 characters” and “generate an HTML report.” Claude Code handles the implementation. Your job is to describe what the result should look like.
Start simple, then iterate. The first version had 5 features. The second version added 3 more. If I’d tried to describe everything in one prompt, it would’ve been overwhelming and probably less accurate. Small iterations work better.
Errors aren’t as scary as they look. When something goes wrong, you don’t need to fully understand every error message. Copy the full message and paste it back to Claude Code with context — it usually explains the problem and fixes it. The key is giving Claude Code the complete error, not just “it didn’t work.”
Clear problem definition matters more than coding ability. I could build this SEO checker because I check SEO every day. I know what matters. Claude Code handles the programming — but you need to bring the domain knowledge about what’s actually useful.
FAQ
Do I need coding experience to use Claude Code?
No. As this claude code tutorial demonstrates, I built this SEO checker without writing or reading a single line of code. What you do need is the ability to describe what you want clearly. If you can explain “check whether this page has a meta description” in a sentence, Claude Code can turn that into working software. The skill is specification, not programming.
How long does it take to build something with Claude Code?
For this SEO checker — about 20 minutes from first prompt to final version with all features. My first project (a folder analyzer) took even less time. The actual code generation is fast (under a minute per prompt). Most of your time goes into deciding what features you want and reviewing the results.
Ideas for Your First Claude Code Project
Once you’ve followed this claude code tutorial, you might want to try your own project. Start with something small that solves a problem you actually have.Here are a few beginner-friendly ideas:
- File organizer — sorts files in a folder by type or date
- CSV cleaner — removes duplicates or blank rows from a spreadsheet export
- Markdown to HTML converter — turns .md files into styled HTML pages
- Simple web scraper — grabs specific data from a public webpage
- Password generator — creates random passwords with customizable rules
The best first project is one where you already know what “correct” looks like — so you can tell whether the result is right without reading the code.
Where to Go From Here
Built and tested on Windows 11 in April 2026. Claude Code version 2.1.91, Claude Max subscription. The SEO checker script and all screenshots are from my actual testing session — nothing was staged or recreated.
Curious how the same project works in an IDE instead of the terminal? I built this exact SEO checker in Windsurf AI for comparison.