{
  "name": "autonomous_agent",
  "description": "ReAct-pattern agent loop with durable chat history, tool calls, and graceful failure",
  "version": 1,
  "schemaVersion": 2,
  "inputParameters": ["question", "max_iterations"],
  "variables": {
    "messages": [],
    "final_response": ""
  },
  "tasks": [
    {
      "name": "init_messages",
      "taskReferenceName": "init_messages",
      "type": "SET_VARIABLE",
      "inputParameters": {
        "messages": [
          {
            "role": "system",
            "message": "You are an agent. Tools available: get_weather(city: string). Respond ONLY as JSON, no markdown fences: {\"action\": \"call_tool\", \"tool\": \"get_weather\", \"args\": {\"city\": \"...\"}} OR {\"action\": \"answer\", \"answer\": \"...\"}."
          },
          {
            "role": "user",
            "message": "${workflow.input.question}"
          }
        ]
      }
    },
    {
      "name": "agent_loop",
      "taskReferenceName": "agent_loop",
      "type": "DO_WHILE",
      "evaluatorType": "graaljs",
      "loopCondition": "(function(){ return $.agent_loop['iteration'] < $.max_iterations && $.final_response === ''; })();",
      "inputParameters": {
        "agent_loop": "${agent_loop.output}",
        "max_iterations": "${workflow.input.max_iterations}",
        "final_response": "${workflow.variables.final_response}"
      },
      "loopOver": [
        {
          "name": "think",
          "taskReferenceName": "think",
          "type": "LLM_CHAT_COMPLETE",
          "inputParameters": {
            "llmProvider": "openai",
            "model": "gpt-4o-mini",
            "messages": "${workflow.variables.messages}",
            "temperature": 0.1,
            "maxTokens": 500,
            "jsonOutput": true
          }
        },
        {
          "name": "route",
          "taskReferenceName": "route",
          "type": "SWITCH",
          "evaluatorType": "graaljs",
          "expression": "$.action",
          "inputParameters": {
            "action": "${think.output.result.action}"
          },
          "decisionCases": {
            "call_tool": [
              {
                "name": "call_weather",
                "taskReferenceName": "call_weather",
                "type": "HTTP",
                "optional": true,
                "inputParameters": {
                  "http_request": {
                    "uri": "https://wttr.in/${think.output.result.args.city}?format=j1",
                    "method": "GET"
                  }
                }
              },
              {
                "name": "build_next_messages",
                "taskReferenceName": "build_next_messages",
                "type": "JSON_JQ_TRANSFORM",
                "inputParameters": {
                  "current": "${workflow.variables.messages}",
                  "tool_result": "${call_weather.output.response.body}",
                  "queryExpression": ".current + [{\"role\": \"assistant\", \"message\": \"Called get_weather.\"}, {\"role\": \"user\", \"message\": (\"Tool result: \" + (.tool_result | tojson))}]"
                }
              },
              {
                "name": "update_messages",
                "taskReferenceName": "update_messages",
                "type": "SET_VARIABLE",
                "inputParameters": {
                  "messages": "${build_next_messages.output.result}"
                }
              }
            ],
            "answer": [
              {
                "name": "finalize",
                "taskReferenceName": "finalize",
                "type": "SET_VARIABLE",
                "inputParameters": {
                  "final_response": "${think.output.result.answer}"
                }
              }
            ]
          },
          "defaultCase": []
        }
      ]
    }
  ],
  "outputParameters": {
    "answer": "${workflow.variables.final_response}",
    "iterations": "${agent_loop.output.iteration}"
  },
  "timeoutSeconds": 600,
  "timeoutPolicy": "TIME_OUT_WF"
}