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Message History

The Message History node retrieves a specified number of recent messages from the conversation history in a Magick flow.

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Inputs

  • flow (required): The input flow containing the conversation history.
  • entries (optional): The number of message entries to retrieve from the history. Default is 10.

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Outputs

  • flow: The input flow, passed through unmodified.
  • messages: An array of the retrieved message history entries.

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Configuration

  • hiddenProperties: An array specifying properties to exclude from the output messages. Default is ["hiddenProperties", "eventState"].
  • eventState: An array specifying additional event state properties to include in the output messages. Default is ["channel", "connector"].

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Usage

  1. Connect the input flow to the flow containing the conversation history you want to retrieve messages from.
  2. (Optional) Set the entries input to the desired number of recent messages to retrieve. If not specified, the default of 10 will be used.
  3. (Optional) Modify the hiddenProperties and eventState configuration arrays to customize what data is included or excluded from the output messages.
  4. Connect the output messages to any nodes that need to consume or process the retrieved message history.
  5. The output flow can be used to pass the input flow through to subsequent nodes unmodified.

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Example

Here’s an example of using the Message History node in a spell: 
// ... previous nodes in spell ...

// Retrieve the last 5 messages from the conversation
const messageHistoryNode = magick.nodes.queries.messages.getMessageHistory({
  flow: inputFlow,
  entries: 5
});

// Use the retrieved messages in a subsequent node
const processMessagesNode = magick.nodes.custom.processMessages({
  messages: messageHistoryNode.outputs.messages
});

// ... additional nodes in spell ...
In this example, the Message History node retrieves the last 5 messages from the inputFlow. The retrieved messages are then passed to a custom processMessages node for further handling.

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Best Practices

  • Only retrieve as many messages as you actually need to avoid unnecessary processing overhead.
  • Use the hiddenProperties and eventState configurations to include or exclude data properties as needed for your use case. This can help reduce the size of the output and improve performance.
  • Remember that the messages output is an array ordered from oldest to newest message. The most recent message will be the last element in the array.

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Gotchas

  • The Message History node only retrieves messages that are already in the flow’s history. It does not fetch any new messages that may have arrived since the flow was triggered.
  • If the specified entries count exceeds the total number of messages in the flow’s history, the node will simply return all available messages. No error is thrown.