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Chat Messages Retriever#

Use the Chat Messages Retriever node to retrieve data from the in-memory vector store.

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

Examples and templates

For usage examples and templates to help you get started, refer to n8n's LangChain integrations page.

Node parameters#

  • Simplify Output

Node reference#

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.

View example workflows and related content on n8n's website.

Refer to LangChain's Memory documentation for more information about the service.

View n8n's LangChain documentation.