---
title: "Web (Dex Web)"
description: "Dex Web is the operator UI for Dex. Use it to find Flows, follow a run, read its"
canonical_url: "https://docs.superdurable.io/components/web/"
source: "docs/content/components/web.mdx"
locale: "en"
---

# Web (Dex Web)

Dex Web is the operator UI for Dex. Use it to find Flows, follow a run, read its
inputs, Attributes, and failures, and act on it.

## What it shows

- **Search and Summary** find Flows and show their state.
- The run page shows a run's active Steps, Attributes, and Channels. Its
  **Timeline** lists each event of the run. The event panel shows the event's
  inputs, outputs, and Attribute changes.
- The **Flow canvas** draws a Flow's Steps and transitions from its Flow
  Definition Graph. The **dexcli visualize** analyzer produces this graph from
  Flow source.
- **Start Flow** starts a Flow, and **Actions** call RPCs on a selected run.
- Experimental features, such as **Designs**, **Work Queue**, **Connectors**,
  and the **Agent session** view, show only when they apply.

## How it fits with the other components

Dex Web runs as its own process. It connects to the
[server](https://docs.superdurable.io/components/server.md) API, the same API that
[Workers and Clients](https://docs.superdurable.io/components/application.md) use. A Flow that Dex
Web starts runs on your Workers. Dex Web also configures
[Connectors](https://docs.superdurable.io/concepts/connector.md) for local development.

Dex Web reads Flow Definition Graphs from the server. Workers or **dexcli**
publish them there. Dex Web can also read graphs from a directory. The
directory is optional. When both have a graph for one Flow type, the directory
wins.

Dex Web validates each graph on its own. An invalid graph shows its error. The
other Flow types keep working.

## Run it

- **dexcli dev** starts Dex Web together with a local server-zd.
- **dex-web** is a standalone binary and container image for production.
- **dexcli web** serves Dex Web against an existing server, for example over an
  SSH tunnel.

```bash
dex-web --flow-service-address 127.0.0.1:8801
```

Dex Web has no end-user authentication. Place it behind TLS and an
authenticating reverse proxy, and never expose it to the public Internet.

## Reference

The [Web reference](https://docs.superdurable.io/reference/web.md) covers the **dex-web** settings, access
control, each UI page, the Flow source analyzer, and a read-only debugging
workflow.