Claude Code

What is Claude Code?

Claude Code is Anthropic’s coding agent, built to work directly inside a real software project rather than as a chat window you copy code out of. You run it from the terminal, or through an editor integration, and describe what you need: fix a bug, add a feature, write tests, refactor a module. Claude Code reads the relevant files, proposes changes, can run commands like your test suite, and iterates based on what it finds, rather than producing one static answer to a single prompt.

The core difference from a typical AI chat assistant is agency: instead of you pasting code back and forth, Claude Code interacts with your actual project the way a developer would, one step at a time.

Key features

• Terminal-native workflow. Runs from the command line, working directly in your project directory.
• File reading and editing. Reads relevant files in a codebase and proposes or applies edits across them.
• Command execution. Can run tests, linters or build commands and use the results to guide its next step.
• Multi-step tasks. Handles tasks that require several actions in sequence, such as fixing a bug, running tests, and adjusting the fix.
• Editor integrations. Works alongside popular editors for developers who prefer not to leave their usual setup.
• Permission controls. Lets you decide which actions it can take automatically and which need your approval first.

How to get started

1. Install Claude Code following Anthropic’s setup instructions for your platform.
2. Connect it to your Claude subscription or API access.
3. Open a project directory in your terminal.
4. Describe a specific task, for example “find and fix the bug causing this test to fail.”
5. Review the proposed changes before letting Claude Code apply them, and adjust permission settings as you get comfortable.

Who Claude Code is for

Developers who want AI help that goes beyond suggestions to actually making changes across a project, teams handling repetitive refactors or migrations, and anyone comfortable working from a terminal who wants an agent that can run tests and iterate rather than just answer questions. It suits both solo projects and larger codebases where a task touches multiple files.

Tips for better results with Claude Code

• Be specific about the goal. Describe the exact bug, feature or outcome you want rather than a vague instruction, and mention any tests it should pass.
• Review diffs before accepting. Read through proposed changes, especially for anything touching critical logic or production code.
• Break large tasks into steps. Ask for a plan first on complex changes, then let it implement and verify piece by piece.
• Check generated identifiers and configs. When it writes IDs, tokens or config values, cross-check unfamiliar ones with the free UUID generator or JSON formatter to confirm they’re well-formed.
• Test generated patterns. Verify any regular expressions it writes with the regex tester before relying on them in production.

Claude Code vs alternatives

Cursor is a full code editor with AI built in, better suited to developers who want AI assistance inside a familiar editor interface rather than the terminal. GitHub Copilot works as an extension inside your existing editor, focused more on inline suggestions than autonomous multi-step tasks. OpenAI Codex offers a comparable agentic coding approach through OpenAI’s tools. Replit combines coding assistance with cloud hosting, useful when you want to build and deploy without managing your own environment.

Is Claude Code worth it?

For developers comfortable working from a terminal, Claude Code’s ability to read a whole project, make coordinated changes, and verify them by running tests can meaningfully speed up real development work, not just isolated code snippets. Because there’s no free plan, it makes most sense for developers who already use Claude regularly or who expect to lean on AI assistance often enough to justify the cost, rather than for occasional, casual use.

See other coding assistants in the AI tools catalog.