> For the complete documentation index, see [llms.txt](https://docs.kiloiot.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kiloiot.io/kilo-docs-es/kilo-center/kilo-mioty-service-center/integrations/mqtt-first-steps.md).

# Primeros pasos con MQTT

Primeros pasos con MQTT en KiloCenter — habilita el broker desactivado por defecto, suscríbete a eventos y publica downlinks.

### Objetivo

Habilite la integración MQTT y valide la recepción de eventos y la publicación de comandos.

### Prerrequisitos

MQTT está **deshabilitado de forma predeterminada** en KiloCenter. Antes de usar MQTT:

1. Asegúrese de que el broker Mosquitto esté en ejecución (incluido en la pila de Docker Compose).
2. Habilite MQTT en `kilocenter-modules/KC-Core/config.yaml`:

```yaml
mqtt:
  enabled: true
  host: "localhost"
  port: 1883
  username: "admin"
  password: "KiloCenter"
```

3. Reinicie KC-Core para que el cambio surta efecto.

### Valores predeterminados del broker local

| Ajuste            | Valor                                   |
| ----------------- | --------------------------------------- |
| Broker            | `localhost:1883`                        |
| Nombre de usuario | `admin`                                 |
| Contraseña        | `KiloCenter`                            |
| Prefijo del tema  | `mioty` (configurable en `config.yaml`) |

### Suscribirse a eventos de enlace ascendente

```bash
mosquitto_sub -h localhost -p 1883 \
  -u admin -P KiloCenter \
  -t 'mioty/+/device/+/event/up' -v
```

### Publicar un comando de enlace descendente

```bash
mosquitto_pub -h localhost -p 1883 \
  -u admin -P KiloCenter \
  -t 'mioty/default/device/<EP_EUI_HEX>/command/down' \
  -m '{"data":"AQIDBA==","confirmed":false}'
```

Reemplace `<EP_EUI_HEX>` con el EUI de su endpoint en formato hexadecimal.

### Observe el tema de resultado

```bash
mosquitto_sub -h localhost -p 1883 \
  -u admin -P KiloCenter \
  -t 'mioty/+/device/<EP_EUI_HEX>/event/downlink_result' -v
```

### Contrato de temas y referencia de carga útil

Para ver la estructura completa de los temas y los formatos de la carga útil, consulte:

* `kilocenter-modules/docs/mqtt-integration.md`


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