I've been using Claude Code daily for months. At some point I noticed I kept doing the same tedious things: hand-writing CLAUDE.md files, looking up which Claude model costs what, generating the same .gitignore from memory.
So I built tools for them. Then I couldn't stop.
Here's what I built, how they work, and the one insight that changed how I think about side projects.
The tools
All 10 are free, browser-based, and require zero sign-in. No API keys, no cost per use. → clauderules.net/tools
1. CLAUDE.md Generator
Pick your framework, language, package manager, and test runner. Get a ready-to-use CLAUDE.md instantly. I run this at the start of every new project.
2. Cursor → CLAUDE.md Converter
Migrating from Cursor AI to Claude Code? Paste your .cursorrules file and get an equivalent CLAUDE.md. Strips Cursor-specific @codebase and @file syntax automatically.
3. MCP Config Builder
Pick MCP servers from a catalog (GitHub, Filesystem, Postgres, Memory, Brave Search...), fill in your credentials, get a claude_desktop_config.json snippet ready to paste. No more googling the exact JSON structure.
4. MCP README Generator
Building an MCP server? Fill in your tools, env vars, and install steps — get a complete README.md with Claude Desktop config snippets and Claude Code install commands.
5. Claude Token Counter
Paste your CLAUDE.md, system prompt, or any text. See the estimated token count, context window usage, and input cost for Haiku 4.5, Sonnet 4.6, and Opus 4.6. Useful for keeping CLAUDE.md files lean.
6. Slash Command Generator
Build custom /commands for Claude Code. Define a name, write instructions, use $ARGUMENTS for user input — get a .claude/commands/<name>.md file ready to drop into your project. Comes with presets for /review-pr, /write-tests, /fix-bug, and /document.
7. .gitignore Generator
Select your stack from 20+ templates (Node.js, Python, Go, Rust, Docker, macOS, VS Code, Terraform...) and get a clean combined .gitignore in one click.
8. JSON → TypeScript Interface Generator
Paste any JSON — nested objects, arrays, mixed types — and get fully typed TypeScript interfaces. Handles recursion, optional fields (nulls become ?:), and union types. No API calls, pure browser.
9. Claude Model Comparison
Side-by-side comparison of Haiku 4.5, Sonnet 4.6, and Opus 4.6. Pricing per million tokens, context windows, speed, and use cases. Includes an "I need it..." filter so you can find the right model without reading docs.
10. Markdown Validator
Paste any Markdown file and get instant feedback, unclosed code fences, heading hierarchy skips, duplicate headings, empty link URLs, missing alt text, and TODO placeholders left in the doc. Includes a live Preview tab so you can see the rendered output alongside the issue list.
What I learned building these
A few things became obvious after building ten of these:
1. CLAUDE.md is underrated.
Most developers set it up once and forget it. But it's the single highest-leverage thing you can do to improve Claude Code's output, it's how you teach Claude about your stack, your conventions, and what you actually want. The token counter exists because a bloated CLAUDE.md is worse than none at all.
2. Slash commands are a superpower most people skip.
Claude Code ships with built-in commands but the real value is custom ones. A /review-pr or /write-tests command that knows your project's conventions is dramatically better than typing the same prompt from scratch every time. Takes 5 minutes to set up.
3. Context window matters more than model choice.
A lot of developers default to Opus for "important" work. But if your CLAUDE.md + open files + conversation history is eating 60% of the context window, you're leaving performance on the table regardless of model. Keep your CLAUDE.md lean and targeted.
4. Markdown quality affects Claude's output.
Claude Code reads your README files, docs, and CLAUDE.md constantly. Sloppy Markdown with broken structure, unclosed fences, and heading skips adds noise to every request. Clean docs → cleaner responses.
Tools are free at clauderules.net/tools. If you have a tool idea, drop it in the comments.
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