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Constructor

new ReActLoop(llm: LLMProvider, retriever: TrajectoryRetriever, options: ReActLoopOptions)

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Options

ReActLoopOptions includes:
  • planPrompt, reasonPrompt, actPrompt
  • maxSteps (default: 30)
  • onStep
  • maxGoalChars, maxPlanChars, maxObsChars, maxReasoningChars

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Prompt Placeholders

  • Plan: {goal}, {examples}
  • Reason: {goal}, {plan}, {observation}, {history}, {examples}
  • Act: {goal}, {plan}, {reasoning}, {history}, {examples}

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Methods

await loop.run(env, goal);
Returns a Trajectory with goal, plan, steps, success, metadata.

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StepContext

Internal type for step formatting: 
interface StepContext {
  goal: string;
  plan: string;
  observation: string;
  reasoning: string;
  history: Step[];
  examples: StepExample[];
}