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Wed, Mar 11, 2026 • Featured

Introducing Replit Agent 4: Built for Creativity

Introducing Agent 4—Replit's fastest, most versatile Agent yet. Push the boundaries of what's possible in vibe coding and build production-ready apps faster.

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  • Fri, Jun 24, 2016

    API Docs

    [Update Oct 2022: We have retired our API, we are excited by our previous work but we do not have the resources to support this at the moment.] Repl.it's code execution API is an HTTP and WebSocket endpoint that you connect to and send code to execute. You can connect from any device or browser and start executing code. This guide will describe the concepts behind the service, how it can be used, and provide a step-by-step guide for signing up and trying out the service! Code Execution You're probably here because you want to run some user code in an app or website somewhere. Our customers use the Repl.it API for many different things including: In-browser coding environments In-browser coding exercises

  • Sat, Jun 18, 2016

    Autocomplete Your Code with Replit

    Autocomplete plays a big role in how we use software, imagine a world where you have to type full search terms without predictions into google search, ugh, the savagery! Many developers employ this technology when writing code in order to increase their productivity. So we decided to implement this feature to help you become the power user you want to be.[](preview end) BEHOLD! Note: if you're not a fan of autocomplete you can always turn it off from the preferences menu (⋮) at the top left of your editor. We've also been getting many requests to enable renaming the repl from the workspace. Now, after you hit save, you can click at the top to change the name of your repl. Soon, we'll add a way to add tags without having to go to the repls page so you can organize and easily search for your repls.

  • Tue, Jun 14, 2016

    A Swift REPL

    In this age of containers it's much easier to run arbitrary code in the cloud. The harder parts are scaling the service, making it reliable, and —as in this case— creating cool and useful experiences. When we looked at existing Swift REPL implementations on the web we found that none delivered a stateful and interactive environment. Just an editor with a run button.[](preview end) As for us, as much as possible, we try to create an environment similar to the original inspiration for our website: DrScheme (now DrRacket).

  • Tue, Jun 14, 2016

    Hello World

    We're excited to launch this new part of our site.[](preview end) First, we have a place to share with you all the exciting features we're building (things that don't fit in a 140 characters and a GIF). You can also look forward to posts sharing what we learn in engineering and design. Second, we're putting all the informational pages for our product and company here. This way you don't have to download tons of JavaScript that is intended for the development environment when all you want to do is read words. That'll also make it easier for Google to index our stuff. For now, you can check out our new about us page, sign up for our classroom product beta, or checkout our new languages landing pages.

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