> For the complete documentation index, see [llms.txt](https://gitbook.humanode.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook.humanode.io/docs/node/cli/dev-mode.md).

# Dev Mode

The dev chain should be specified to run the node in dev mode:

```
humanode-peer --dev
```

In development mode, the chain doesn't require any peer computers to produce and finalize blocks. If you see messages that blocks are being proposed and finalized, you have a running node.

```
... Idle (0 peers), best: #3 (0xcc78…5cb1), finalized #1 ...
... Starting consensus session on top of parent ...
... Prepared block for proposing at 4 (0 ms) ...
```

Additionally, `--tmp` flag can be passed to indicate that the node should be run as a temporary node. A temporary directory will be created to store the configuration and will be deleted at the end of the process.

```
humanode-peer --dev --tmp
```