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## What it is

Replicas runs Claude Code, Codex, or any coding agent in the cloud instead of on your laptop. Each agent gets its own isolated VM with a real dev environment — it installs dependencies, spins up databases, and runs your actual codebase inside the sandbox. You bring your own subscriptions and API keys, kick off a task from Slack, Linear, or GitHub, and get back a pull request ready to review.

## Why it matters

The pitch is blunt: local agents die the moment you close your laptop. Replicas keeps them running server-side, so you can fire off work and walk away while it churns. It’s harness-neutral — Claude Code, Codex, OpenCode, and more all run on it — so you’re not locked into one vendor’s agent. That’s the same thesis driving Cognition’s Devin Desktop and a wave of 2026 tooling: software engineering is shifting toward delegating to fleets of cloud agents, not babysitting one in your terminal.