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Getting Claude Code running for a single developer takes about 15 minutes. Getting it running well across an engineering team—with appropriate configuration, security settings, and team norms—takes 2–3 weeks. This guide covers both: the technical installation process and the organisational setup that turns individual Claude Code access into a team-level productivity multiplier.
We've onboarded 200+ engineering teams to Claude Code, and the pattern is consistent: the teams that invest in good CLAUDE.md configuration and structured onboarding get 3–4x the productivity benefit of teams that just install and leave engineers to figure it out. The setup work pays for itself in the first week.
Prerequisites and Access Options
Before installing Claude Code, you need to choose your access model. There are three options for engineering teams:
Option 1 — Individual Claude Max subscriptions: Each engineer subscribes to Claude Max ($100/month). This gives them full Claude Code access alongside Claude.ai for non-coding tasks. Best for small teams (under 10 engineers) or teams where budget authorisation for individual subscriptions is straightforward.
Option 2 — Claude API with shared key: Your organisation gets an Anthropic API key and configures Claude Code to use it. Engineers don't need individual subscriptions—they authenticate against the org key. This enables centralised billing, usage tracking, and access control. Best for medium to large teams (10+ engineers) and organisations that need cost allocation across teams.
Option 3 — Anthropic Enterprise API agreement: For organisations with 50+ engineers or strict security/compliance requirements, an enterprise agreement provides dedicated support, custom data processing terms, and volume pricing. Our implementation service can facilitate enterprise API agreements.
Technical prerequisites: Node.js 18 or higher, npm 8 or higher, macOS 12+, Linux (Ubuntu 20.04+ / Debian 11+ / most modern distributions), or Windows with WSL2 configured.
Need help choosing the right access model?
Our engineering assessment covers access model selection, security configuration, and onboarding planning for teams of any size.
Get Free Assessment →Installation: Step-by-Step
Install Claude Code via npm
Open your terminal and run the installation command globally.
Authenticate with your API key or Claude account
Run the auth command to connect Claude Code to your account or API key.
Configure your terminal environment
Claude Code works best in a terminal with good Unicode support. Verify your setup.
Create a .claudeignore file (security-critical)
Before using Claude Code on your codebase, create a .claudeignore to protect sensitive files.
Your First Claude Code Session
Once installed and authenticated, start Claude Code in a project directory by running claude. Claude Code will read your current directory and any CLAUDE.md files it finds. You'll see a prompt where you can give instructions in natural language.
For your first session, start with a read-only exploratory task to build intuition for how Claude Code understands your codebase:
The key adjustment for engineers new to Claude Code: treat it like pairing with a very capable colleague who can read code fast but needs context about intent and constraints. The more specific your instructions, the better the output. "Fix the bug in the auth module" is less effective than "The login endpoint returns 200 for invalid passwords when the email doesn't exist. Fix this to return 401 consistently."
Claude Code for Engineering Teams: Deployment Guide
Complete deployment guide including MCP integration patterns, CLAUDE.md templates for 8 stack types, security configuration checklists, and team onboarding playbooks.
Download Free →Setting Up CLAUDE.md for Your Team
The CLAUDE.md file transforms Claude Code from a generic AI assistant into a codebase-aware colleague that understands your team's conventions. Place CLAUDE.md in the root of each repository. For enterprise deployments, also create a global CLAUDE.md in ~/.claude/ for company-wide standards.
A well-structured CLAUDE.md for an enterprise codebase:
MCP Integration: Connecting Claude Code to Your Stack
MCP (Model Context Protocol) servers extend Claude Code's capabilities by giving it live access to external systems. For engineering teams, the highest-value MCP integrations are:
- GitHub MCP: Claude Code reads PR descriptions, comments, and issues directly, then implements changes accordingly. Dramatically accelerates feature-to-PR workflows.
- Jira/Linear MCP: Claude Code reads ticket descriptions and acceptance criteria, then implements features that match the specified requirements.
- Documentation MCP: Claude Code writes documentation updates alongside code changes, keeping docs in sync with implementation.
- Sentry/Datadog MCP: Claude Code reads error reports and can implement fixes based on production error context.
MCP servers are configured in your Claude settings file. Start with GitHub MCP for the highest immediate impact, then add additional integrations based on your team's workflow.
Team Onboarding and Best Practices
Individual setup is straightforward; the team adoption process requires more intentionality. The engineers who get the most out of Claude Code early are those who understand the interaction model—and sharing that understanding accelerates the team's learning curve.
The most effective onboarding structure we've used across 200+ deployments:
Day 1 Workshop (90 minutes): 20 minutes of conceptual framing (what Claude Code is, what it's good at, permission model). 45 minutes of live demo on your actual codebase, showing the progression from read → explain → write → test. 25 minutes hands-on with a simple task in a sandboxed branch. Set up the team Slack channel.
Week 1–2 Individual Practice: Each engineer uses Claude Code for at least one real task per day on low-stakes work: documentation, test writing, or a well-understood feature. Encourage sharing in the team Slack channel—"I got Claude Code to do X by prompting it with Y" type updates are high-signal and spread best practices quickly.
Week 2 Retrospective (30 minutes): What worked? What surprised you? What patterns should we add to CLAUDE.md? Most teams identify 2–5 CLAUDE.md improvements in this session that meaningfully improve everyone's outputs.
For an enterprise deployment plan covering all aspects of Claude Code rollout, see our Claude Code enterprise deployment guide and download the Claude Code for Engineering Teams white paper. Our Engineering department hub has additional workflow guides for code review, documentation generation, and test coverage.
Frequently Asked Questions
What are the system requirements for Claude Code?
Claude Code runs on macOS (12+), Linux (Ubuntu 20.04+, Debian 11+, and most modern distributions), and Windows via WSL2. It requires Node.js 18+, npm 8+, and a Claude Pro or Max subscription (or API access for enterprise deployments). Internet access is required for all Claude Code operations. Claude Code works best with 8GB+ RAM for large codebase operations.
Can we deploy Claude Code without engineers needing individual subscriptions?
Yes — for enterprise deployments, you can use the Claude API with a shared API key, allowing centralised billing and access control. Engineers authenticate against your organisation's API key without needing personal subscriptions. This also enables usage monitoring, cost allocation, and access control via your API key management layer.
How do I prevent Claude Code from accessing sensitive files or directories?
Use a .claudeignore file (same syntax as .gitignore) to exclude files and directories from Claude Code's context. Best practice: exclude .env files, credentials directories, secrets, and any files containing PII. In your CLAUDE.md, explicitly instruct Claude Code never to read or modify certain paths. Claude Code's permission system also allows you to set read-only boundaries at the directory level.
What's the best way to onboard a team of 20 engineers to Claude Code?
Run a structured onboarding over 2 weeks: Week 1: 90-minute workshop covering Claude Code concepts, live demo, hands-on practice with low-stakes tasks. Week 2: Follow-up session sharing wins and challenges, codify CLAUDE.md improvements, establish team norms. Set up a shared Slack channel for Claude Code tips. Most teams reach comfortable daily use within 3 weeks.
