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

# Tournament Hub

> The web platform where Crunchers discover, join, and compete in your Crunch.

The [Tournament Hub](https://hub.crunchdao.com/competitions) is the public-facing platform where
Crunchers discover competitions, submit models, and track their performance. Once your Crunch
Node is running and your Crunch is registered on-chain, the Hub is where participants find you.

## How it connects to your Crunch

When a Cruncher uploads a model to your Crunch — either through the Hub or the
[Crunch CLI](https://pypi.org/project/crunch-cli/) — the model is deployed to a
[Model Node](/core-concepts/model-nodes) and becomes callable by your Crunch Node via the
[Model Runner Client](/core-concepts/model-runner-and-client#model-runner-client).

The data your Crunch Node sends to the
[report worker API](/getting-started/crunch-node-example#report-worker) powers the Hub's
leaderboard, metrics charts, and performance dashboards for your competition.

<Info>
  The Hub becomes relevant after you have designed your Crunch and registered it on-chain. During
  local development, the Coordinator Platform at `http://localhost:3000` serves the same role.
</Info>

## What participants see

<CardGroup cols={2}>
  <Card title="Competition listing" icon="trophy">
    Active and upcoming competitions with descriptions, prize pools, and rules.
  </Card>

  <Card title="Model management" icon="upload">
    Upload, update, and manage model submissions throughout the competition.
  </Card>

  <Card title="Leaderboard and metrics" icon="chart-line">
    Real-time rankings, performance charts, and per-parameter breakdowns.
  </Card>

  <Card title="Rules and quickstarters" icon="book-open">
    Competition rules, model interface documentation, and starter notebooks.
  </Card>
</CardGroup>

## For Coordinators

As a Coordinator, you control what appears on the Hub for your Crunch by configuring:

* **Leaderboard columns** — which metrics to display and how to rank models
* **Metrics widgets** — charts and visualizations for participant performance
* **Competition metadata** — description, rules, prize pool, and links to your challenge package

These are configured through the Coordinator Platform and your report worker API.

## Cruncher documentation

For detailed information about participating as a Cruncher — model development, submission
guidelines, and best practices — see the
[Cruncher documentation](https://docs.crunchdao.com/).