{
  "name": "a2a_client_multi_turn",
  "version": 1,
  "schemaVersion": 2,
  "timeoutSeconds": 3600,
  "timeoutPolicy": "TIME_OUT_WF",
  "description": "Client-side multi-turn conversation: call a remote agent; if it returns input-required, branch (SWITCH on the agent's state) and call again with the SAME contextId/taskId carrying the answer \u2014 resuming the same remote task.",
  "ownerEmail": "a2a@example.com",
  "tasks": [
    {
      "name": "ask_agent",
      "taskReferenceName": "ask",
      "type": "AGENT",
      "inputParameters": {
        "agentType": "a2a",
        "agentUrl": "${workflow.input.agentUrl}",
        "text": "${workflow.input.prompt}",
        "headers": {
          "Authorization": "Bearer ${workflow.secrets.AGENT_TOKEN}"
        },
        "maxDurationSeconds": 900
      }
    },
    {
      "name": "branch_on_state",
      "taskReferenceName": "branch",
      "type": "SWITCH",
      "evaluatorType": "value-param",
      "expression": "state",
      "inputParameters": {
        "state": "${ask.output.state}"
      },
      "decisionCases": {
        "input-required": [
          {
            "name": "answer_agent",
            "taskReferenceName": "answer",
            "type": "AGENT",
            "inputParameters": {
              "agentType": "a2a",
              "agentUrl": "${workflow.input.agentUrl}",
              "text": "${workflow.input.answer}",
              "contextId": "${ask.output.contextId}",
              "taskId": "${ask.output.taskId}",
              "headers": {
                "Authorization": "Bearer ${workflow.secrets.AGENT_TOKEN}"
              },
              "maxDurationSeconds": 900
            }
          }
        ]
      },
      "defaultCase": []
    }
  ],
  "outputParameters": {
    "state": "${ask.output.state}",
    "text": "${ask.output.text}",
    "answer": "${ask.output.artifacts[0].parts[0].data.result}",
    "taskId": "${ask.output.taskId}",
    "contextId": "${ask.output.contextId}"
  }
}