fx

fx

Vercel
Poolside

Poolside

Poolside.ai
+
+

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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.

About

Poolside is an AI coding agent platform that works directly within the tools developers already use, including CLI, VS Code, Visual Studio, Zed, JetBrains, web, and headless environments. The platform enables developers to run agents from the terminal, inside their IDE, through a browser, or within CI/CD pipelines. Poolside supports sandboxed execution, allowing code to be tested and validated in isolated environments before changes affect a codebase. Its fine-grained permission controls let teams decide exactly what agents can read, write, run, or access. The platform also provides version control for agent work, traceability, observability, usage metrics, and centralized governance through the Poolside Console. By combining developer-native integrations with enterprise controls, Poolside helps engineering teams automate coding, testing, review, and development workflows safely.

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 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

Audience

Poolside is ideal for software developers, engineering teams, platform teams, DevOps leaders, and enterprises that want secure AI coding agents integrated into their existing development tools and workflows

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

Free
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

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

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

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Vercel
Founded: 2015
United States
fx.sh/

Company Information

Poolside.ai
Founded: 2023
United States
www.poolside.ai/

Alternatives

Alternatives

Laguna M.1

Laguna M.1

Poolside
Amp

Amp

Amp Code
Laguna XS.2

Laguna XS.2

Poolside

Categories

Categories

Integrations

Bitbucket
Eclipse IDE
GitHub
GitLab
IntelliJ IDEA
Laguna M.1
Laguna S 2.1
Laguna XS 2.1
Laguna XS.2
Linear
Python
Slack
Visual Studio
Visual Studio Code
Zed

Integrations

Bitbucket
Eclipse IDE
GitHub
GitLab
IntelliJ IDEA
Laguna M.1
Laguna S 2.1
Laguna XS 2.1
Laguna XS.2
Linear
Python
Slack
Visual Studio
Visual Studio Code
Zed
Claim fx and update features and information
Claim fx and update features and information
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Claim Poolside and update features and information