What is fx?

fx is a compact, open-source coding agent and command-line interface (CLI) crafted in Zig, tailored for research purposes, performance enhancement, and smooth integration into larger frameworks. Its design philosophy highlights minimalism across the system prompt, available functionalities, memory efficiency, and achieves a compact binary size of just 6 MB, striving for a user experience reminiscent of a Unix shell instead of a bulky terminal IDE. With an outstanding cold start time measured in microseconds, fx efficiently bypasses unnecessary tasks or I/O actions prior to command receipt, making it particularly well-suited for programmatic environments, resource-constrained settings, and agent sandboxes. Developers can effortlessly launch it within any project to execute a variety of functions including file reading, code searching, command execution, change implementation, test running, and real-time tool activation streaming. Its underlying architecture is model- and provider-agnostic, allowing for compatibility with local models, API gateways, direct provider connections, and cloud-based inference options. By prioritizing context efficiency, it employs a concise system prompt and a streamlined toolset to reduce token overhead and improve the speed of generating the first response token. Furthermore, this focused approach on lightweight operations and rapid interactions empowers developers to sustain their productivity without the common burdens associated with more intricate environments. In essence, fx represents a significant advancement in efficient coding tools, catering to the needs of modern developers while ensuring a straightforward operational flow.

Pricing

Price Starts At:
Free
Free Version:
Free Version available.

Integrations

No integrations listed.

Screenshots and Video

fx Screenshot 1

Company Facts

Company Name:
Vercel
Date Founded:
2015
Company Location:
United States
Company Website:
fx.sh/

Product Details

Deployment
SaaS
Training Options
Documentation Hub
Support
Web-Based Support

Product Details

Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English

fx Categories and Features