# fx

fx é um agente de programação nativo, pequeno e aberto, com CLI para trabalhar com código pelo terminal. Foi desenvolvido para pesquisa, incorporação e uso como parte de sistemas maiores, com suporte à inferência local ou na nuvem.

- Findings24: <https://findings24.com/pt/tools/fx>
- Site: <https://fx.sh>
- Preços: Freemium
- Categorias: Ferramentas divertidas de IA

## O que é fx?

fx is a CLI-based coding agent written in Zig. It is designed to run from the terminal, work as a native process, and fit into larger systems through embedding or protocol-based integrations. The project emphasizes a small binary, minimal output, and a workflow that is closer to a Unix shell than a full terminal IDE.

The documentation describes fx as model-agnostic and open source under Apache-2.0. It can be used interactively in a project directory, resumed across sessions, or run noninteractively with `fx ask`. The same runtime can also be exposed over Agent Client Protocol or compiled to WebAssembly for JavaScript-based interfaces.

## O que fx pode fazer?

### Minimal native CLI

fx is a terminal-first coding agent with a shell-like interface, designed to keep output compact and focus on the current workspace.

### Interactive and noninteractive modes

Users can start a fresh session with \`fx\`, continue an existing session with \`fx resume\`, or run a single request with \`fx ask\`.

### Workspace-aware execution

The current directory becomes the primary workspace, and commands such as reading, searching, and listing files work within that context.

### Permission-aware actions

fx starts in auto permission mode, reviews sensitive calls, and prompts before actions that can change files or run commands. Permission mode can be changed with \`/permissions\`.

### Multiple deployment surfaces

The same agent can run natively in the terminal, serve over ACP with \`fx acp\`, or be loaded from JavaScript through the experimental WebAssembly SDK.

### Extensible agent runtime

The docs mention skills, plugins, MCP, browser integration, and configurable SDK behavior for authentication, storage, command execution, and network requests.

## Casos de uso

### Terminal-based code assistance

Work in a repository, ask fx to inspect files, explain code, add tests, or run the test suite while the transcript shows tool calls as they happen.

### Session-based development workflows

Resume prior work, inspect saved sessions, and recover context when you return to a project later.

### Embedded coding-agent interfaces

Use fx as the runtime behind an editor, application, or service that needs coding-agent behavior without building the agent from scratch.

### JavaScript or browser-hosted agent experiences

Load the WebAssembly build into a JS application when you need a headless agent or an interactive terminal-like interface.

### Controlled automation with approvals

Use fx in environments where file access and command execution should be reviewed before they run.

## Perguntas frequentes

### What is fx?

fx is a CLI-based AI coding agent and harness for working with code from the terminal or embedding the agent into other systems.

### How do I start using it?

The docs show installation with \`curl -fsSL https://fx.sh/setup.sh \| bash\`, followed by \`fx login\` for Vercel authentication or setup of an AI Gateway API key.

### Can fx run without an interactive terminal session?

Yes. The docs document \`fx ask\` for one-off requests, along with commands such as \`fx status\`, \`fx models\`, and \`fx permissions\` for inspection and configuration.

### Does fx only work with one model provider?

No. The site describes fx as model-agnostic and suitable for local models, gateways, direct provider API access, or subscriptions.

### Can fx be embedded in other products?

Yes. The docs describe native ACP support and an experimental WebAssembly SDK for JavaScript-based integrations.

## Informações rápidas

- **Category**: Developer Tool
- **Platform**: CLI, native process, ACP, WebAssembly
- **Primary users**: Developers working in repositories or teams embedding a coding agent
- **License**: Apache-2.0
- **Source domain**: fx.sh
- **Status**: Experimental