> For the complete documentation index, see [llms.txt](https://wiki.crosswatch.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.crosswatch.app/blueprint-architecture/scrobble/sink/sink-mdblist.md).

# Sink: MDBList

This is the **MDBList sink** used by scrobbling.

It sends `ScrobbleEvent` updates to the MDBList API.

{% tabs %}
{% tab title="End users" %}

### What it does

It reports playback state to MDBList in real time.

### Setup links

* Auth: [Auth: MDBList](/crosswatch/providers/authentication/auth-trackers/auth-mdblist.md)
* UI mode: [Watcher](/crosswatch/scrobble/watcher.md)

### Common gotchas

* Missing external IDs reduces match rate.
* Rate limits can cause retries and gaps.
  {% endtab %}

{% tab title="Power users" %}

### Entry point

* `providers/scrobble/mdblist/sink.py`

### Public surface

* class: `MDBListSink`

### External endpoint

* `https://api.mdblist.com`

### Key constants

* `MDBLIST_API = https://api.mdblist.com`
* `APP_AGENT = CrossWatch/Watcher/1.0`

### Config touchpoints

Common namespaces:

* `mdblist.*`
* `scrobble.*`
* `runtime.*`

### Interactions

* may call watchlist auto-remove on completion
  {% endtab %}
  {% endtabs %}


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