Claude collection

Claude Code and CLAUDE.md tools

Your CLAUDE.md file shapes every Claude Code session. These tools help you review it for vague rules and token waste, generate one from scratch, convert it to other agent formats, and count tokens to keep it lean. Free, no signup.

Review my CLAUDE.md Generate a CLAUDE.md Convert CLAUDE.md to AGENTS.md Count Claude tokens

CLAUDE.md Reviewer

Claude Code reads your CLAUDE.md every session, so every vague or unused line costs tokens and weakens behavior. Paste your CLAUDE.md and get a numbered audit: missing commands, missing file boundaries, generic rules, over-long explanations, contradictions, and 1-3 rewritten paragraphs you can drop in directly. Need to create one from scratch? Use the CLAUDE.md generator. Continue into AGENTS.md, Cursor, Copilot, and Windsurf formats with the related converter.

CLAUDE.md Generator

Type a short description of your project — stack, deploy target, key dependencies — and get back a polished CLAUDE.md with all six standard sections (overview, tech, file structure, commands, workflows, behavioral rules). Powered by Amazon Nova Micro on AWS Bedrock. Daily-capped to stay free and fast.

CLAUDE.md Converter

Paste your CLAUDE.md (or AGENTS.md, or raw rules) and instantly convert it into the format your other agent tool expects. Handles Claude Code, OpenAI Codex, Cursor, GitHub Copilot, and Windsurf. Preserves sections for markdown targets, extracts imperative rules for flat rule-files. Download or copy. No upload, all client-side.

Token Counter & Cost Estimator (Claude, GPT, Gemini, Nova)

Paste any text and see token counts + USD cost across every major LLM provider — OpenAI (GPT-5, GPT-4o, o1), Anthropic (Claude Opus 4.5, Sonnet 4.6, Haiku 4.5), Google (Gemini 2.5 Pro/Flash), Amazon (Nova Micro/Lite/Pro), DeepSeek, xAI Grok, Mistral. OpenAI counts are exact (gpt-tokenizer / o200k_base BPE). Other providers use character-based estimates because they don't publish browser-runnable tokenizers — drift is clearly labeled. Choose input-only, output-only, or 50/50 mix; project cost at 1 to 1M calls. All client-side, no signup.

CLAUDE.md how-to guides

Step-by-step answers for writing, reviewing, and converting CLAUDE.md files.

Review CLAUDE.md for Token Waste

Find vague, repeated, or unused CLAUDE.md instructions that cost tokens every Claude Code turn without improving behavior.

CLAUDE.md Missing Commands Checklist

Check whether a CLAUDE.md includes the build, test, lint, dev server, deploy, and verification commands an agent needs before editing.

CLAUDE.md Repo Boundaries and Rules

Write CLAUDE.md rules that tell agents which files to edit, which files to avoid, and how to handle dirty worktrees safely.

Review CLAUDE.md Before Converting to AGENTS.md

Clean a CLAUDE.md first, then convert it into AGENTS.md, Cursor rules, GitHub Copilot instructions, or Windsurf rules.

What Should Go in a CLAUDE.md File

Decide what belongs in CLAUDE.md and what belongs in the README, a path-scoped rule, or a skill. One test per line, applied to a real file.

Claude Code Is Not Following CLAUDE.md — How to Fix It

Diagnose why Claude Code ignores your CLAUDE.md: the file never loaded, the rule is vague, two files contradict, or the rule needs a hook instead.

CLAUDE.md vs .claude/rules vs Skills — Which File Owns What

Route each instruction to the right file: always-loaded CLAUDE.md, path-scoped .claude/rules/, or on-demand skills. One question decides it.

CLAUDE.md Best Practices Checklist — Audit Your File Against 8 Rules

Run your CLAUDE.md through eight checks: size, specificity, exact commands, anti-patterns, structure, contradictions, enforcement, and staleness.

CLAUDE.md FAQ

What is CLAUDE.md?

CLAUDE.md is a project instruction file that lives in a repository root and tells Claude Code what your project needs: build commands, testing rules, file boundaries, and conventions. Claude Code loads it in every session, so it shapes every interaction.

What should a CLAUDE.md contain?

Include the commands Claude needs: build, test, lint, dev server, and deploy. Add your project layout, naming conventions that differ from tool defaults, and two real anti-patterns your team has hit. Skip generic advice like write good code and follow existing patterns. Keep it under 200 lines.

CLAUDE.md vs AGENTS.md vs .cursorrules: what is the difference?

CLAUDE.md is for Claude Code. AGENTS.md is the shared format that Codex and several other agents read. .cursorrules is for Cursor. They all tell an agent the same kinds of facts about your project, but they load in different editors. Many teams maintain one clean CLAUDE.md and generate the other formats from it.

Does a long CLAUDE.md cost tokens every turn?

Yes. Claude Code loads your CLAUDE.md into every session, so every line consumes tokens on every turn. That is why cutting vague rules and stale notes pays off: a 50-line file costs less than a 200-line file even when they say the same thing.

Working with Cursor instead? The CLAUDE.md Converter generates .cursorrules from your CLAUDE.md. For Copilot, Windsurf, or Codex, convert to those formats too.