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Retrieve context from your LlamaCloud Index
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Overview

This node connects to a LlamaCloud index to retrieve contextual information based on an input query. It is designed to fetch relevant data snippets from a specified LlamaCloud index, which can then be used in workflows that require context-aware responses or data enrichment.

Common scenarios include:

  • Enhancing chatbot interactions by providing relevant background information.
  • Retrieving knowledge base articles or documents related to user queries.
  • Supporting decision-making processes with contextual data fetched dynamically.

For example, a user might input a question into the workflow, and this node will query the LlamaCloud index to return the most relevant pieces of information to help answer that question.

Properties

Name Meaning
Index Name Your LlamaCloud index name. The identifier of the index from which to retrieve context.

Output

The node outputs JSON data containing a context field, which is an array of strings. Each string represents a piece of content retrieved from the LlamaCloud index that is relevant to the input query.

Output structure example:

{
  "context": [
    "First relevant content snippet",
    "Second relevant content snippet",
    "...additional snippets"
  ]
}

No binary data output is produced by this node.

Dependencies

  • Requires an API key credential for authenticating with the LlamaCloud service.
  • Uses the llamaindex library internally to interact with the LlamaCloud index.
  • The node expects the input data to contain a chatInput string property, which serves as the query for retrieving context.

Troubleshooting

  • Empty or missing chatInput: If the input data does not contain a valid chatInput string, the node will send an empty context array. Ensure that the input JSON includes a chatInput field with the query text.
  • Invalid or missing API key: Authentication failures may occur if the API key credential is not set or invalid. Verify that the API key is correctly configured in the node credentials.
  • Incorrect index name: Providing a wrong or non-existent index name will result in no context being retrieved. Double-check the index name spelling and existence in your LlamaCloud account.
  • Network or service errors: Connectivity issues or service downtime may cause errors during retrieval. Check network connectivity and LlamaCloud service status.

Links and References

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