fx

Terminal agentPreview

Vercel Labs' coding agent harness written in Zig, built for research and for embedding in larger systems. A 6 MB CLI closer to a Unix shell than a terminal IDE.

Vercel LabsFree2026-08-24

Website Repo Docs

Pricing

Plan	Price	Included	Beyond that	Notes
Open source individual	Free	—	—	You pay the model provider or gateway you sign in with

Source: fx.sh Pricing verified 2026-08-24

Models

OpenAIxAIVercel AI Gateway Local models BYOK

Model-agnostic. Vercel AI Gateway login or key, ChatGPT and SuperGrok OAuth, direct provider keys, or local models.

Features

SubagentsMCP clientACP agentSandboxingPlugins

Install

curlcurl -fsSL https://fx.sh/setup.sh | bash

License

Apache-2.0 · Open source · github.com/vercel-labs/fx

Sources

Every fact above points at a vendor page and the date someone last checked it.

fx.sh
pricinggeneral2026-08-24
github.com/vercel-labs/fx
platformsmodelsfeatureslicense2026-08-23