> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coreflux.org/llms.txt
> Use this file to discover all available pages before exploring further.
# Using Coreflux HUB
> Access the Coreflux HUB in your browser and manage your broker — MQTT topics, LoT code, routes, and system settings in one place.
## Manage Your Broker from the Browser
You have a Coreflux broker running. Now you want to explore MQTT topics, deploy LoT code, configure routes, and manage users — all without installing desktop tools or memorizing command-line syntax. The Coreflux HUB gives you a browser-based interface that puts every management task in one place.
**Like the dashboard of your car.** You don't pop the hood to check the speed or fuel level — you glance at the dashboard. The HUB does the same for your broker: real-time data, configuration, and diagnostics, all visible at a glance.
### When to Use This
* You want to **manage your broker visually** without installing MQTT Explorer or VS Code
* You need to **deploy and test LoT code quickly** from any machine with a browser
* You're **configuring routes** to databases or PLCs and want a guided, visual workflow
* You want to **monitor connected clients and system health** in real time
***
**Haven't installed Coreflux yet?** Follow the [Installation guide](/quick-start/installation) first — make sure to expose ports `8080` and `8443` so the HUB is reachable.
## Access the HUB
Open your browser and navigate to:
| Environment | URL |
| ----------- | ------------------------- |
| **Local** | `http://localhost:8080` |
| **Remote** | `http://:8080` |
| **HTTPS** | `https://localhost:8443` |
Log in with the default credentials:
| Setting | Value |
| -------- | ---------- |
| Username | `root` |
| Password | `coreflux` |
Change the default password before deploying to production. Go to **System → User Management** to update credentials.
***
## What Can You Do with Coreflux HUB?
Once you're logged in, the HUB gives you four dedicated apps that together cover every broker management task — from inspecting live data to deploying logic and connecting external systems.
Browse live topics, inspect payloads, publish test messages, and see which clients are connected.
Create, edit, and deploy Actions, Models, and Rules directly in the browser — no external tools needed.
Connect your broker to databases, PLCs, and external systems using templates or LoT code, then monitor each connection in real time.
Configure the broker, manage users and permissions, run commands, and stream real-time logs for diagnostics.
The table below maps common tasks to the app that handles them so you always know where to go.
| Task | HUB App |
| -------------------------------------------------------------------- | ---------------- |
| Browse topics and inspect message payloads | **MQTT** |
| Publish a test message to any topic | **MQTT** |
| See which devices are connected | **MQTT** |
| Write or update an Action, Model, or Rule | **LoT Editor** |
| Deploy LoT code to the broker instantly | **LoT Editor** |
| Add a route to a database or PLC | **Routes** |
| Monitor route connection health and logs | **Routes** |
| Change broker network or TLS settings | **System** |
| Create users and assign permissions | **System** |
| View real-time broker logs and run commands | **System** |
| Ask for insights, build dashboards, or draft LoT from plain language | **AI Assistant** |
The sections below walk you through each of these tasks hands-on.
***
## See Your MQTT Data
Open the **MQTT** app to browse every topic flowing through your broker in real time. The topic tree on the left lets you drill into any hierarchy, and selecting a topic shows its latest payload, QoS, and timestamp on the right.
Use this when you need to verify that a device is publishing, check payload formats, or publish a test message — all without leaving the browser. For a full walkthrough, see [Data Viewer](/coreflux-hub/mqtt/data-viewer).
***
## Connect to an External Device with a Route
Open the **Routes** app to connect your broker to databases, PLCs, or other external systems. Pick a template, fill in the connection details, map MQTT topics to fields, and activate — the HUB handles the rest.
Each route card shows a live status indicator so you can tell at a glance whether the connection is healthy. For configuration details, see [Routes](/coreflux-hub/routes/overview).
***
## Quickly Change the LoT Running on the Broker
Open the **LoT Editor** to create, edit, or redeploy Actions, Models, and Rules directly in the browser. Changes take effect immediately — no build step, no file transfer, no restart.
This is the fastest way to iterate on broker logic when you don't have VS Code open. For the full editor reference, see [LoT Editor](/coreflux-hub/lot).
***
## Build With the AI Assistant
Open the **AI Assistant** from the Coreflux icon in the bottom dock and describe what you want in plain language — ask for insights from live data, build a dashboard with live widgets, or develop a LoT Action. The assistant uses the broker's own tools to draft, refine, and deploy the change in the same panel.
Use **Insight** mode for read-only exploration or switch to **Agent** mode when you want the assistant to create or update Routes, Actions, and panels. For setup, modes, and built-in safeguards, see [AI Assistant](/coreflux-hub/ai-assistant).
***
## Debug Your LoT and Broker
Open the **System** app when something isn't behaving as expected. **Broker Logs** stream trace-level output in real time, and the **Command Console** lets you run broker commands directly — restart actions, inspect state, or change configuration on the fly.
Combine logs with the Data Viewer to trace a message from publish to action execution. For all system tools, see [System](/coreflux-hub/system/overview).
***
## Next Steps
Deep-dive into each app — Data Viewer, LoT Editor, Routes, and System tools.
Build and deploy a working LoT Action in under 15 minutes.