Context Strategies

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Strategy Types

• APPEND (default): the new node’s messages are added to the existing context. The full history is kept and the context grows as the conversation goes on.
• RESET: the context is cleared and replaced with the new node’s messages. Use it when the earlier history is no longer relevant, or would confuse the task at hand.

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Global Configuration

from pipecat.flows import ContextStrategy, ContextStrategyConfig

flow_manager = FlowManager(
    worker=worker,
    llm=llm,
    context_aggregator=context_aggregator,
    context_strategy=ContextStrategyConfig(
        strategy=ContextStrategy.APPEND,
    )
)

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Per-Node Configuration

nodes:
  new_topic:
    context_strategy: reset
    task_messages:
      - role: developer
        content: Ask the customer what else you can help with.

node_config = NodeConfig(
    task_messages=[...],
    functions=[...],
    context_strategy=ContextStrategyConfig(
        strategy=ContextStrategy.RESET,
    ),
)