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The Runtime setting determines how the agent executes and handles failures.

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Runtime Types

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Local

Runs everything in the same process as the request handler. This is the simplest runtime with no external dependencies. Characteristics:
  • Fast execution with no network overhead
  • Crashes during the agent loop cannot recover
  • Suitable for development and low-risk scenarios

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Restate

Uses Restate server for durable execution. Each agent loop runs as a Restate workflow, and each IO operation is a Restate durable step. Characteristics:
  • Durable execution with automatic recovery
  • IO operation results are stored by Restate and reused upon recovery/replay instead of performing the operation again
  • Provides strong guarantees for long-running agent operations
  • Streaming is handled through sidecar Redis-based streaming
  • Suitable for production environments requiring reliability

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Temporal

Uses Temporal server for durable execution. Each agent loop runs as a Temporal workflow, and each IO operation is a Temporal activity. Characteristics:
  • Durable execution with automatic recovery
  • IO operations are executed as Temporal activities, providing isolation and retry capabilities
  • Streaming is handled through sidecar Redis-based streaming
  • Suitable for production environments requiring workflow orchestration