What Is Claude Code? Anthropic's AI Coding Agent Explained

By Jai Mittal, CTO · August 16, 2026

Claude Code is Anthropic’s AI coding agent. Unlike browser-based builders like Lovable and Bolt — which generate a complete app from a prompt in a web interface — Claude Code runs in your terminal and operates directly on your local codebase. It can read files, write code, run commands, search the web, and execute multi-step tasks across your entire project.

How Claude Code differs from Cursor and GitHub Copilot

Cursor is an AI-first IDE — a fork of VS Code with AI features deeply integrated. It provides code completion, inline editing, and a chat interface that can make multi-file changes. Developers still control the file structure and navigate the IDE directly.

GitHub Copilot is an AI code completion tool integrated into VS Code, JetBrains, and other editors. It suggests completions as you type and can generate functions or explain code, but it does not autonomously execute multi-step tasks.

Claude Code is more autonomous than either. You give it a task in the terminal — "implement user authentication with JWT and refresh token rotation" — and it executes a multi-step plan: reading existing files, writing new ones, creating tests, and running commands. It operates as an agent, not as an autocomplete assistant.

What Claude Code generates (security perspective)

Claude Code generates sophisticated, multi-file code changes. This creates specific security considerations:

• Scope of changes. Claude Code can modify authentication, payment, and database code in a single session. The breadth of changes requires careful review before merging.
• Speed of generation. Complex changes that a human developer would write over hours can be generated in minutes. Review cadence needs to keep pace.
• Environment variable handling. Claude Code will sometimes reference environment variables in generated code. Verify that sensitive variables are in .env files not tracked by git, not hardcoded in the generated output.

Security checklist for Claude Code projects

• Run gitleaks after every session that touched credential-adjacent code
• Review every new API route for authentication before pushing
• Check that error handling does not surface internal details to users
• Run npm audit after any session that added packages
• Run a URL-based scan after deploying changes from a Claude Code session

The full Claude Code security audit guide covers each of these in detail, and the free LRC scan checks the live-deploy surface of your Claude Code project in 30 seconds.

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