Hi there, I'm Connor from Replicas :)

Recently, you might have seen Stripe and Ramp release blogs outlining their in-house background coding agents. This showed us that background agents, with the proper tooling, can be relied on to ship critical production code.

Replicas is a background coding agent that can run your codebase locally.

We’re used by 20+ YC startups at all team sizes.

The Problem

Background coding agents are a huge productivity boost for clearing tickets and shipping faster.

The existing solutions - CC/Codex on Cloud, Cursor Agents - lock you into one harness and give you no control over the environment.

This defeats the entire point of "background" agents. A powerful background agent should run everything locally, verify its work, and iterate until it's satisfied.

How Replicas Works

Replicas helps you delegate to as many background agents as you need:

- Bring your own Claude/Codex credentials

- Each agent gets a sandbox VM with your code cloned

- The agent installs deps, spins up databases, runs services, and verifies its work locally

- When it's done, it opens a PR for you to review

Replicas can be triggered from Slack, Linear, GitHub (PR reviews, CI/CD failures), the Dashboard, or API.

The biggest difference is Environments. You can configure the following:

- Files

- Env vars

- Start hooks

- Warm hooks

- Skills/MCPs

It's built so that its flexible to any kind of codebase, allowing Replicas to run everything locally just like a human engineer would.

Replicas can also create Previews:

Meaning you can check out services (e.g web app on 3000) running on the sandbox's VM from your computer with just a click :)

Check out this writeup for Replicas V1 for more details:

https://www.replicas.dev/notes/replicas-v1

Demo Video

https://youtube.com/watch?v=uyH77T-pcXc

What's Next

- Automations + API: Improving our API and adding an automations menu, e.g having Replicas run every night.

- Recursive: Replicas can break down super complex tasks by creating more Replicas instances.

- Lowering Latency: For larger teams, improving our warm pool and snapshotting infrastructure to make spinning up Replicas feel instant (more than it already does)

- Long-term Memory

- and what our customers ask for :p

What I'm asking from you

- Sign up (https://replicas.dev) or reach out (connor@replicas.dev)

- Check out [this writeup](https://www.replicas.dev/notes/replicas-v1) for Replicas V1

- Upvote if this resonates with you!