> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tai42.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# tai backend

> Run a tai execution-backend runtime (worker / beat / dashboard).

Run a tai execution-backend runtime (worker / beat / dashboard).


A backend runtime always registers a task backend, so it requires the worker
bus — set TAI\_BUS\_REDIS\_URL. The backend-runtime and server processes must
converge on config reloads, so a busless backend is refused at boot (and again
on any reload that would leave a backend without the bus). TAI\_CONFIG\_MODE=k8s
is likewise refused without the bus.

```console theme={null}
$ tai backend [OPTIONS] [EXTRA_ARGS]...
```

| Argument          | Description  |
| ----------------- | ------------ |
| `[EXTRA_ARGS]...` | *(optional)* |

| Option                   | Description                                                         |
| ------------------------ | ------------------------------------------------------------------- |
| `--manifest-path` `TEXT` | Path to a YAML manifest file (file mode only; ignored in K8s mode). |