UI Overview

Hamilton comes with a fully open-source UI that can be run both for local deployment and on a remote server. The UI consists of the following features:

  1. Telemetry for hamilton executions – both on the history of executions and the data itself.

  2. A feature/artifact catalog for browsing/connecting executions of nodes -> results.

  3. A dataflow (i.e. DAG) visualizer for exploring and looking at your code, and determining lineage.

  4. A project explorer for viewing curating projects and viewing versions of your Hamilton dataflows.

In short, the Hamilton UI aims to combine a large swath of MLOps/data observability systems in one simple application.

Hamilton UI

The Hamilton UI has two modes: 1. Run locally using sqlite3 2. Run on docker images with postgres (meant for deployment)

Local Mode

To run the hamilton UI in local mode, you can do the following:

pip install "sf-hamilton[ui,sdk]"
hamilton ui
# python -m hamilton.cli.__main__ ui # on windows

This will launch a browser window in localhost:8241. You can then navigate to the UI and start using it! While this can potentially handle a small production workflow, you may want to run on postgres with a separate frontend/backend/db for full scalability and a multi-read/write db.

Docker/Deployed Mode

The Hamilton UI can be contained within a set of Docker images. You launch with docker-compose, and it will start up the UI, the backend server, and a Postgres database. If you’d like a quick overview of some of the features, you can watch the following:


If you’d like a video walkthrough on getting set up, you can watch the following:

As prerequisites, you will need to have Docker installed – you can follow instructions here.

  1. Clone the Hamilton repository locally

git clone https://github.com/dagworks-inc/hamilton
  1. Navigate to the hamilton/ui directory

cd hamilton/ui
  1. Execute the installation script with the following command


This will:

  • Pull all Docker images from the Docker Hub

  • Start a local Postgres database

  • Start the backend server

  • Start the frontend server

This takes a bit of time! So be patient. The server will be running on port 8242.

  1. Then navigate to http://localhost:8242 in your browser, and enter your email (this will be the username used within the app).

Building the Docker Images locally

If building the Docker containers from scratch, increase your Docker memory to 10gb or more – you can do this in the Docker Desktop settings.

To build the images locally, you can run the following command:

# from the hamilton/ui directory
./deployment/dev.sh --build

This will build the containers from scratch. If you just want to mount the local code, you can run just



Please reach out to us if you want to deploy on your own infrastructure. Self-hosting documentation will be up soon.

Get started

Now that you have your server running, you can run a simple dataflow and watch it in the UI! You can follow instructions in the UI when you create a new project, or follow the instructions here.

First, install the SDK:

pip install "sf-hamilton[sdk]"

Then, navigate to the project page (dashboard/projects), in the running UI, and click the green + New DAG button.


Remember the project ID – you’ll use it for the next steps.

Existing Hamilton Code

Add the following adapter to your code if you have existing Hamilton code:

from hamilton_sdk import adapters

tracker = adapters.HamiltonTracker(
   tags={"environment": "DEV", "team": "MY_TEAM", "version": "X"}

dr = (

Then run your DAG, and follow the links in the logs!

I need some Hamilton code to run

If you don’t have Hamilton code to run this with, you can run Hamilton UI example under examples/hamilton_ui:

# we assume you're in the Hamilton repository root
cd examples/hamilton_ui
# make sure you have the right python packages installed
pip install -r requirements.txt
# run the pipeline providing the email and project_id you created in the UI
python run.py --email <email> --project_id <project_id>

You should see links in the logs to the UI, where you can see the DAG run + the data summaries captured.


Once you get to the UI, you can navigate to the projects page (left hand nav-bar). Assuming you have created a project and logged to it, you can then navigate to view it and then more details about it. E.g. versions, code, lineage, catalog, execution runs. See below for a few screenshots of the UI.

Dataflow versioning

Select a dataflow versions to compare and visualize.

DAG Version Tracking

Assets/features catalog

View functions, nodes, and assets across a history of runs.



View dataflow structure and code.

Browser Browser

Run tracking + telemetry

View a history of runs, telemetry on runs/comparison, and data for specific runs:

Run Tracking Run Telemetry Run Data