> 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/sync/_mod_mdblist/overview.md).

# overview

This is the **MDBList sync module** used by the orchestrator. It is not the setup/auth guide.

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

### What it supports

This module can sync:

* [Watchlist](/blueprint-architecture/sync/_mod_mdblist/watchlist.md)
* [History](/blueprint-architecture/sync/_mod_mdblist/history.md)
* [Ratings](/blueprint-architecture/sync/_mod_mdblist/ratings.md)

### Setup links

* [Auth: MDBList](/crosswatch/providers/authentication/auth-trackers/auth-mdblist.md)
* [Adapter: MDBList](/crosswatch/providers/synchronization/adapter-mdblist.md)

### Matching notes

MDBList uses strong external IDs.

That usually makes it a good “source of truth”.
{% endtab %}

{% tab title="Power users" %}

### Entry point

* `sync/_mod_MDBLIST.py`

### Feature modules

* watchlist → `providers/mdblist/_watchlist.py`
* history → `providers/mdblist/_history.py`
* ratings → `providers/mdblist/_ratings.py`

### Capability highlights

* `bidirectional: true`
* `index_semantics: "present"`
* `provides_ids: true`
* `history.from_date: true`

<details>

<summary>Capabilities (raw)</summary>

```json
{
  "bidirectional": true,
  "history": {
    "from_date": true,
    "remove": true,
    "types": {
      "episodes": true,
      "movies": true,
      "seasons": true,
      "shows": true
    },
    "upsert": true
  },
  "index_semantics": "present",
  "provides_ids": true,
  "ratings": {
    "from_date": false,
    "types": {
      "episodes": true,
      "movies": true,
      "seasons": true,
      "shows": true
    },
    "unrate": true,
    "upsert": true
  }
}
```

</details>

### State files

* `mdblist.watermarks.json`
* `mdblist_watchlist.shadow.json`
* `mdblist_watchlist.unresolved.json`
* `mdblist_ratings.index.json`
* `mdblist_history.index.json`
  {% endtab %}
  {% endtabs %}


---

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