> For the complete documentation index, see [llms.txt](https://docs.function.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.function.network/function-network/using-function-network/run-a-node/configuration.md).

# Configuration

The Function node uses a set of configuration files located in the `~/.fxn` directory in your user's home folder.

* `config.yaml`: The main configuration file for the node server.
* `model_backend.yaml`: Configuration for the model backend
* `nodekey.json`: Stores your node's private key.

## Starting the Node

You can start the node using:

```bash
fxn start
```

`nodekey.json` will created for you upon start if it wasn't created before.

### Text-based User Interface (TUI)

For a more interactive experience with easier debugging and state monitoring, you can start the node with a Text-based User Interface (TUI):

```bash
fxn start --tui
```

## Account Management

Before starting a node, you need to generate a node key. This key is used to identify your node on the Function Network.

### Creating a New Account

To generate a new node key, run the following command:

```bash
fxn account new
```

This command will create a `nodekey.json` file in your `~/.fxn` directory.

### Viewing Your Account

To display your existing node key and address, use:

```bash
fxn account show
```

## Configuration Details

For a detailed breakdown of the configuration options, please see the following sections:

* [Node](/function-network/using-function-network/run-a-node/configuration/config.md)
* [Model Backend](/function-network/using-function-network/run-a-node/configuration/model-backend.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.function.network/function-network/using-function-network/run-a-node/configuration.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.