fx

fx

Vercel
+
+

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About

Create beautiful, modern web applications at the speed of thought. Describe what you need and Replit's AI Agent builds it for you. Meet Replit Agent, an advanced AI making programming accessible to everyone. Build at the speed of thought and launch in minutes. Prompt Replit Agent by describing the app or site you want to create. Replit AI can even help you enhance your prompt for the best results. Replit Agent generates a plan for bringing your idea to life. Start with a prototype, and add extra features as you go by writing simple prompts. Refine your creation through an easy-to-use chat interface. After every step of your build plan, the agent will ask for feedback and integrate your requests into the next batch of work. Deployment your site or app to to a live URL in minutes. Backed by Google Cloud, Replit Deployments let you build your startup, automate your job, grow your following, and more — faster than ever before.

About

fx is a tiny, open, native coding agent harness and CLI written in Zig, optimized for research, performance, and embeddability as part of larger systems. Its design focuses on minimalism across the system prompt, tools, feature set, memory use, and a 6 MB binary, with an interface intended to feel closer to a Unix shell than a heavy terminal IDE. fx cold starts in microseconds and performs no unnecessary work or I/O before accepting input, making it suitable for programmatic use, resource-constrained environments, and agent sandboxes. Developers can start it inside a project and ask it to read files, search code, run commands, make changes, execute tests, and stream tool calls as they happen. The core is model- and provider-agnostic, supporting local models, gateways, direct provider access, and cloud inference. It is context-efficient by design, using a minimal system prompt and toolset to reduce token overhead and improve time to first token.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers interested in a powerful AI coding agent to generate full apps with AI

Audience

Developers and AI infrastructure builders in need of a solution to run or embed a lightweight, extensible, model-agnostic coding agent in terminals, applications, and automated systems

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 3.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • The power of the code Agent at the speed of light. Therefore I will surely like to provide this or introduce this app to any developer as well.

Cons

  • How it delivers the work in modernized and accurate

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Replit
Founded: 2016
United States
replit.com

Company Information

Vercel
Founded: 2015
United States
fx.sh/

Alternatives

Devin Desktop

Devin Desktop

Cognition

Alternatives

Goose

Goose

Block

Categories

Categories

Integrations

Bash
C
C++
CSS
GitHub
Go
Google Chrome
Google Cloud Platform
HTML
JSON
Java
JavaScript
PHP
Perl
R
React
Ruby
Rust
SQL
Yarn

Integrations

Bash
C
C++
CSS
GitHub
Go
Google Chrome
Google Cloud Platform
HTML
JSON
Java
JavaScript
PHP
Perl
R
React
Ruby
Rust
SQL
Yarn
Claim Replit Agent and update features and information
Claim Replit Agent and update features and information
Claim fx and update features and information
Claim fx and update features and information