Claude Code
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Accelerates software development by embedding a powerful AI coding assistant directly into the terminal, enabling instant codebase search, multi‑file edits, and seamless integration with IDEs, CI/CD pipelines, and common command‑line tools.
Claude Code Overview
What is Claude Code about?
Claude Code brings deep‑code understanding to the command line, allowing developers to query, modify, and test entire codebases without leaving their terminal. It runs locally, contacts Anthropic's models (Opus 4.1, Sonnet 4, Haiku 3.5) via API, and respects explicit user approval before changing files or executing commands.
How to use Claude Code?
- Install Node.js (v18+) on your machine.
- Install the package with the preferred npm command:
npx -y @anthropic-ai/claude-code - Authenticate using your Anthropic API key (set
ANTHROPIC_API_KEYin your environment or follow the interactive login flow). - Run
claude-codeinside any project directory. The tool will index the repository, then you can issue natural‑language prompts such as"Add a login page using React"or"Fix the failing unit test in utils.js". - Review the suggested changes, approve, and let Claude Code apply them or run the associated commands.
Key features of Claude Code
- Agentic search: understands the whole repository without manual file selection.
- Multi‑file coordinated edits: can modify several files in a single operation.
- IDE integration: works inside VS Code and JetBrains editors.
- Toolchain awareness: leverages Git, Docker, CI/CD, monitoring, and cloud services directly from the terminal.
- Safety controls: never writes to disk or runs commands without explicit user consent.
- Configurable SDK: extendable via the Claude Code SDK or GitHub Actions.
Use cases of Claude Code
- On‑boarding: quickly map and explain large codebases for new team members.
- Issue triage: convert tickets into PRs, run tests, and submit changes automatically.
- Refactoring: perform complex, cross‑module refactors with full dependency awareness.
- Feature implementation: prototype new functionality and have the AI generate boilerplate and tests.
- Bug fixing: locate root causes and apply targeted patches in seconds.
FAQ from Claude Code
- What models does Claude Code use? It runs on Claude Opus 4.1, Claude Sonnet 4, and Claude Haiku 3.5. Enterprise deployments can use models hosted on Amazon Bedrock or Google Vertex AI.
- Which operating systems are supported? macOS, Linux, and Windows.
- Is my code secure? The assistant runs locally, communicates only with Anthropic's API, and asks for permission before any file modification or command execution.
- How is Claude Code billed? When used with a Pro or Max subscription the feature is included. With an Anthropic Console account it consumes API tokens at standard API pricing.
- Can I integrate Claude Code with my CI/CD pipeline? Yes, the SDK and GitHub Actions support automated runs as part of build or deployment workflows.
- Do I need a separate server? No dedicated server is required; the CLI contacts Anthropic's cloud endpoints directly.
Claude Code's README
Title: Claude Code: Deep coding at terminal velocity \ Anthropic
URL Source: https://www.anthropic.com/claude-code
Markdown Content: Claude Code: Deep coding at terminal velocity \ Anthropic
===============
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Chat with Claude * Overview * Max plan * Team plan * Enterprise plan * Explore pricing
* [Download apps](https://claude.ai/redirect/website.v1.e45ad626-17b1-4286-8a78-0b467375d055/download)
* [Claude log in](https://claude.ai/redirect/website.v1.e45ad626-17b1-4286-8a78-0b467375d055)
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Build with Claude * API overview * Developer docs * Explore pricing
* [Console log in](https://console.anthropic.com/)
News Learn how to build with Claude
Solutions
Collaborate with Claude * AI agents * Coding * Customer support * Education * Financial services * Government
Case studies Hear from our customers
Research
Research * Overview * Economic Index
Claude model family
* [Claude Opus 4.1](https://www.anthropic.com/claude/opus)
* [Claude Sonnet 4](https://www.anthropic.com/claude/sonnet)
* [Claude Haiku 3.5](https://www.anthropic.com/claude/haiku)
Research Claude’s extended thinking
Commitments
Initiatives * Transparency * Responsible scaling policy
Trust center
* [Security and compliance](http://trust.anthropic.com/)
Announcement ISO 42001 certification
Learn
Learning resources * Customer stories * Engineering at Anthropic * Anthropic Academy
Company
* [About](https://www.anthropic.com/company)
* [Careers](https://www.anthropic.com/careers)
* [Events](https://www.anthropic.com/events)
Engineering Building effective agents
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Your code’s new collaborator
Your code’s new collaborator
Unleash Claude’s raw power directly in your terminal. Search million-line codebases instantly. Turn hours-long workflows into a single command. Your tools. Your workflow. Your codebase, evolving at thought speed.
Developer docsDeveloper docs
Developer docs
Install Node.js 18+, then run:
npm install-g @anthropic-ai/claude-code
Try Claude Code on MaxTry Claude Code on Max
Try Claude Code on Max
Try Claude Code on MaxTry Claude Code on Max
Try Claude Code on Max
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Trusted by engineers at
Command-line AI, from concept to commit
Watch as Claude Code tackles an unfamiliar Next.js project, builds new functionality, creates tests, and fixes what’s broken—all from the command line. Join Boris and Cat as they show you what coding feels like when you’re not doing it alone.
Deep coding at terminal velocity
Claude Code embeds Claude Opus 4.1—the same model our researchers and engineers use—right in your terminal. It has deep codebase awareness and the ability to edit files and run commands directly in your environment.
Interact with Claude Code
✻
Creating…
✻
Synthesizing…
Powerful intelligence
- Uses agentic search to understand your entire codebase without manual context selection
- Makes coordinated changes across multiple files
- Optimized specifically for code understanding and generation with Claude Opus 4.1
Works where you work
- Lives right inside your terminal—no context switching
- Integrates with VS Code and JetBrains IDEs
- Leverages your test suites and build systems
You’re in control
- Never modifies your files without explicit approval
- Adapts to your coding standards and patterns
- Configurable; build on the SDK or run on GitHub Actions
Works with your IDEs
Claude works directly in VS Code and JetBrains, seeing your entire codebase instead of just isolated snippets. It understands your project structure and existing patterns, making suggestions that actually fit and presenting them directly in your code files. No copying and pasting—just building.
... and your favorite command line tools
Your terminal is where real work happens. Claude Code connects with the tools that power development—deployment, databases, monitoring, version control. Rather than adding another interface to juggle, it enhances your existing stack. Less context-switching.
What could you do with Claude Code?
See examples
Code onboardingTriage issuesRefactor code
✻
Conjuring…
✻
Stewing…
Install Node.js 18+, then run:
npm install-g @anthropic-ai/claude-code
Code onboarding
Claude Code maps and explains entire codebases in a few seconds. It uses agentic search to understand project structure and dependencies without you having to manually select context files.
Turn issues into PRs
Stop bouncing between tools. Claude Code integrates with GitHub, GitLab, and your command line tools to handle the entire workflow—reading issues, writing code, running tests, and submitting PRs—all from your terminal while you grab coffee.
Make powerful edits
Claude Code’s understanding of your codebase and dependencies enables it to make powerful, multi-file edits that actually work.
Big fans of Claude Code
“
I'm an infra and backend guy, but with Claude 3.5 Sonnet being so good, I now feel like I'm an everything guy.
Ethan
@ethancatzel
“
Claude Code has dramatically accelerated our team's coding efficiency. I can now write EDA code in a notebook—pulling data, training a model, and evaluating it with basic metrics—and then ask Claude to convert that into a Metaflow pipeline. This process saves 1-2 days of routine (and often boring!) work per model.
Anton Biryukov
Staff Software Engineer at Ramp
“
Claude Code marks a threshold moment for AI in software development. At Intercom, it enables us to build applications we wouldn't have had bandwidth for—from AI labeling tools to ROI calculators for our Sales team. Its ability to handle complex, multi-step tasks sets it apart from alternatives. Claude Code is fundamentally changing what's possible for our engineering teams.
Fergal Reid
VP of AI at Intercom
“
Some interesting data on how Anthropic’s Sonnet 3.5 seems to remain by far the most capable LLM for coding. Every single leading GenAI-powered IDE (Cursor, Windsurf, Zed, Copilot etc) favor this model. A good question: how is Claude so much better for code generation?
Bradley Silicani
COO, Anrok
What developers say about Claude Code
“
Claude Code has dramatically accelerated our team’s coding efficiency. I can now write EDA code in a notebook—pulling data, training a model, and evaluating it with basic metrics—and then ask Claude to convert that into a Metaflow pipeline. This process saves 1-2 days of routine (and often boring!) work per model.
Anton Biryukov
Staff Software Engineer at Ramp
“
Claude Code marks a threshold moment for AI in software development. At Intercom, it enables us to build applications we wouldn’t have had bandwidth for—from AI labeling tools to ROI calculators for our Sales team. Its ability to handle complex, multi-step tasks sets it apart from alternatives. Claude Code is fundamentally changing what’s possible for our engineering teams.
Fergal Reid
VP of AI at Intercom
Get started with Claude Code
-
Pro 200 billed up front. $20 if billed monthly. Claude Code is included in your Pro plan. Perfect for short coding sprints in smaller codebases with Claude Sonnet 4. Sign upSign up Sign up
-
Max 5x $100 Per person billed monthly Claude Code is included in your Max plan. Great value for everyday use in larger codebases with access to both Claude Sonnet 4 & Claude Opus 4.1. Sign upSign up Sign up
-
Max 20x $200 Per person billed monthly Even more Claude Code included in your Max plan. Great value for power users with the most access to Claude Opus 4.1. Sign upSign up Sign up
*Additional usage limits apply. Prices shown do not include applicable tax.
Anthropic API
Pay-as-you-go with standard Anthropic API pricing.
Start buildingStart building
Start building
-
### Deploy Claude Code to unlimited developers -
### No per-seat fees or platform charges -
### Set spend limits and monitor usage through the Console -
### Support for Amazon Bedrock and Google Cloud Vertex AI
Prices shown do not include applicable tax. Usage limits may apply.
Education plan
A comprehensive university‐wide plan for institutions, including its students, faculty, and staff.
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### Student & faculty access Comprehensive access for all university members at discounted rates -
Academic research & learning mode Dedicated API credits and educational features for student learning -
### Training & enablement Resources for successful adoption across your institution
Get the technical rundown
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Claude Code documentation
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How Anthropic teams use Claude Code
FAQs
-
How do I get started with Claude Code?
There are two ways to access Claude Code: with your Claude Pro or Max subscription, or with an Anthropic Console account. In both cases, you can download Claude Code using these instructions and then sign in with your respective Claude or Console account.
-
What kinds of tasks can Claude Code handle?
Claude Code excels at both routine development tasks like bug fixes and testing, as well as transformative work like refactors and feature implementation that require deep codebase understanding.
-
How does Claude Code work with my existing tools?
Claude Code runs in your terminal and works alongside your preferred IDE and development tools without requiring you to change your workflow. Claude Code can also use command line tools (like Git) and MCP servers (like GitHub) to extend its own capabilities using your tools.
-
Is Claude Code secure?
Yes. Claude Code runs locally in your terminal and talks directly to model APIs without requiring a backend server or remote code index. It also asks for permission before making changes to your files or running commands.
-
Which models does Claude Code use?
Claude Code works with Claude Opus 4.1, Claude Sonnet 4, and Claude Haiku 3.5 models. Enterprise users can run Claude Code using models in existing Amazon Bedrock or Google Cloud Vertex AI instances.
-
What are the system requirements to run Claude Code?
Claude Code works on macOS, Linux, and Windows. See full system requirements.
-
How much does Claude Code cost?
When used with an Anthropic Console account, Claude Code consumes API tokens at standard API pricing.
-
How can I enable my organization to use Claude Code?
Organizations can use Claude Code by issuing users ‘Developer’ roles under their Anthropic Console account. Contact our sales team for more information.
Create what’s exciting. Maintain what’s essential.Create what’s exciting.Maintain what’s essential.
Install Node.js 18+, then run:
npm install-g @anthropic-ai/claude-code
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Claude Code's Information
- Category
- Development Tools
- Updated
- 2 months ago
Configuration
{
"mcpServers": {
"claude-code": {
"command": "npx",
"args": [
"-y",
"@anthropic-ai/claude-code"
],
"env": {
"ANTHROPIC_API_KEY": "<YOUR_API_KEY>"
}
}
}
}Configure Clients
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