Claude Code
Also: Claude Code CLI
Claude Code is a command-line tool that brings Claude directly into your development workflow. You run it in your terminal, point it at a codebase, and Claude can read files, write code, run commands, and navigate your project — all in conversation. It's Claude as a pair programmer that can actually see and touch your work, not just read what you paste in.
In practice
You're building a feature and open your terminal. You type your goal — "add pagination to this API endpoint" — and Claude Code reads your codebase, writes the changes, runs the tests, and fixes the failures, all without you specifying each step. It's Claude operating as a software engineer inside your actual project.
Related concepts
Where Claude Code shows up
4 articlesThey are different tools for different jobs. The web app is for thinking, writing, and analysis. Claude Code is for working inside your codebase. Here is the decision guide — including when neither is the right answer.
Claude Code is a different product from Claude.ai — it is an agentic coding tool that runs in the terminal. Here is what it does and when it makes sense.
Engineers are often the last team to adopt Claude, and the first to find the most interesting uses once they do. The field note on what actually works — beyond autocomplete.
On April 30, 2026 Anthropic moved Claude Security from research preview into public beta for Claude Enterprise. It scans repositories for vulnerabilities, traces data flows across files, and writes patches you can review and apply. Here's what it does, who it's for, and where it fits next to existing security tools.