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Average Ratings 0 Ratings

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ease
features
design
support

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Write a Review

Description

Reasonix functions as an open-source coding agent tailored for extended autonomous sessions, ensuring that the code produced is readable, auditable, and reversible. It utilizes a single local engine that integrates with four different interfaces: terminal, desktop application, web browser, and ACP-compatible editors, sharing sessions, permissions, skills, and MCP servers among them. The plan mode retains all writes until the suggested steps undergo review and approval, while read, write, and shell commands are distinctly gated and limited within a secure workspace sandbox. Each action taken generates a checkpoint outside of Git, enabling users to revert to earlier points in a lengthy session without disrupting the commit history. Support for MCP through stdio, SSE, and streamable HTTP amalgamates external tools within a single registry, while Markdown skills and independent subagents enhance the agent's capabilities without necessitating a fork. Reasonix maintains a map of the codebase established at the outset, preserving that map for the entirety of the session, which allows users to organize tasks, examine differences, and continue their work seamlessly without sacrificing context. This design fosters an efficient workflow that minimizes the risk of losing track of ongoing projects.

Description

fx is a compact, open-source coding agent and command-line interface (CLI) developed in Zig, specifically optimized for research applications, performance, and seamless integration into larger systems. Its architecture emphasizes minimalism throughout the system prompt, available tools, feature set, memory usage, and maintains a small binary size of just 6 MB, aiming for an interface experience that resembles a Unix shell rather than a cumbersome terminal IDE. With an impressive cold start time in microseconds, fx avoids unnecessary tasks or input/output operations before receiving commands, making it ideal for programmatic applications, environments with limited resources, and agent sandboxes. Developers can easily initiate it within a project to perform tasks such as reading files, searching through code, executing commands, implementing changes, running tests, and streaming tool activations in real time. The underlying framework is both model- and provider-independent, enabling compatibility with local models, API gateways, direct provider connections, and cloud-based inference options. By design, it maximizes context efficiency, utilizing a succinct system prompt and streamlined toolset to minimize token overhead and enhance the speed of response to the first token generated. In addition, this unique focus on lightweight operation and quick interaction allows developers to maintain productivity without the typical overhead associated with more complex environments.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

DeepSeek
DeepSeek-V4-Flash
DeepSeek-V4-Pro
Model Context Protocol (MCP)

Integrations

DeepSeek
DeepSeek-V4-Flash
DeepSeek-V4-Pro
Model Context Protocol (MCP)

Pricing Details

Free
Free Trial
Free Version

Pricing Details

Free
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

Reasonix

Country

China

Website

reasonix.io

Vendor Details

Company Name

Vercel

Founded

2015

Country

United States

Website

fx.sh/

Product Features

Product Features

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