> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.memorymotorhead.md).

# Motorhead

{% hint style="warning" %}
**Deprecated**

The Motorhead project is no longer maintained. This node is deprecated, and will be removed in a future version.
{% endhint %}

Use the Motorhead node to use Motorhead as a memory[^1] server.

On this page, you'll find a list of operations the Motorhead node supports, and links to more resources.

{% hint style="info" %}
**Credentials**

You can find authentication information for this node [here](/integrations/builtin/credentials/motorhead.md).
{% endhint %}

## Node parameters <a href="#node-parameters" id="node-parameters"></a>

* **Session ID**: Enter the ID to use to store the memory in the workflow data.

## Node reference <a href="#node-reference" id="node-reference"></a>

{% hint style="info" %}
**Parameter resolution in sub-nodes**

Sub-nodes behave differently to other nodes when processing multiple items using an expression.

Most nodes, including root nodes, take any number of items as input, process these items, and output the results. You can use expressions to refer to input items, and the node resolves the expression for each item in turn. For example, given an input of five `name` values, the expression `{{ $json.name }}` resolves to each name in turn.

In sub-nodes, the expression always resolves to the first item. For example, given an input of five `name` values, the expression `{{ $json.name }}` always resolves to the first name.
{% endhint %}

## Templates and examples <a href="#templates-and-examples" id="templates-and-examples"></a>

[Browse Motorhead node documentation integration templates](https://n8n.io/integrations/motorhead) or [search all templates](https://n8n.io/workflows/)

## Related resources <a href="#related-resources" id="related-resources"></a>

Refer to [LangChain's Motorhead documentation](https://js.langchain.com/docs/integrations/memory/motorhead_memory) for more information about the service.

View n8n's [Advanced AI](/build/integrate-ai.md) documentation.

## Single memory instance <a href="#single-memory-instance" id="single-memory-instance"></a>

If you add more than one Motorhead node to your workflow, all nodes access the same memory instance by default. Be careful when doing destructive actions that override existing memory contents, such as the override all messages operation in the [Chat Memory Manager](/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.memorymanager.md) node. If you want more than one memory instance in your workflow, set different session IDs in different memory nodes.

[^1]: In an AI context, memory allows AI tools to persist message context across interactions. This allows you to have a continuing conversations with AI agents, for example, without submitting ongoing context with each message. In n8n, AI agent nodes can use memory, but AI chains can't.