### 1 · SendMessage: with a webhook
POST /a2a/jsonrpc HTTP/1.1
Host: localhost:41241
Content-Type: application/json
A2A-Version: 1.0

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "SendMessage",
  "params": {
    "message": {
      "messageId": "85750621-02fb-4d4f-b57f-bc5af71a1bfc",
      "role": "ROLE_USER",
      "parts": [
        {
          "text": "Run the unit tests for payments-api at commit 9f3c2e1"
        }
      ]
    },
    "configuration": {
      "returnImmediately": true,
      "taskPushNotificationConfig": {
        "url": "http://localhost:41250/a2a-events",
        "token": "planner-run-0006",
        "authentication": {
          "scheme": "Bearer",
          "credentials": "hook_secret_91d2"
        }
      }
    }
  }
}

HTTP/1.1 200 OK
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "task": {
      "id": "d7d3dceb-7333-4676-90ce-36542116a45c",
      "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
      "status": {
        "state": "TASK_STATE_SUBMITTED",
        "timestamp": "2026-10-06T09:00:04.750Z"
      },
      "history": [
        {
          "messageId": "85750621-02fb-4d4f-b57f-bc5af71a1bfc",
          "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
          "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
          "role": "ROLE_USER",
          "parts": [
            {
              "text": "Run the unit tests for payments-api at commit 9f3c2e1"
            }
          ]
        }
      ]
    }
  }
}

### 2 · ListTaskPushNotificationConfigs
POST /a2a/jsonrpc HTTP/1.1
Host: localhost:41241
Content-Type: application/json
A2A-Version: 1.0

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "ListTaskPushNotificationConfigs",
  "params": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c"
  }
}

HTTP/1.1 200 OK
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 2,
  "result": {
    "configs": [
      {
        "id": "92c697ef-4abc-4e86-82ba-dc6bce4077af",
        "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
        "url": "http://localhost:41250/a2a-events",
        "token": "planner-run-0006",
        "authentication": {
          "scheme": "Bearer",
          "credentials": "hook_secret_91d2"
        }
      }
    ]
  }
}

### 3 · GetTaskPushNotificationConfig
POST /a2a/jsonrpc HTTP/1.1
Host: localhost:41241
Content-Type: application/json
A2A-Version: 1.0

{
  "jsonrpc": "2.0",
  "id": 3,
  "method": "GetTaskPushNotificationConfig",
  "params": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "id": "92c697ef-4abc-4e86-82ba-dc6bce4077af"
  }
}

HTTP/1.1 200 OK
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 3,
  "result": {
    "id": "92c697ef-4abc-4e86-82ba-dc6bce4077af",
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "url": "http://localhost:41250/a2a-events",
    "token": "planner-run-0006",
    "authentication": {
      "scheme": "Bearer",
      "credentials": "hook_secret_91d2"
    }
  }
}

### 4 · DeleteTaskPushNotificationConfig
POST /a2a/jsonrpc HTTP/1.1
Host: localhost:41241
Content-Type: application/json
A2A-Version: 1.0

{
  "jsonrpc": "2.0",
  "id": 4,
  "method": "DeleteTaskPushNotificationConfig",
  "params": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "id": "92c697ef-4abc-4e86-82ba-dc6bce4077af"
  }
}

HTTP/1.1 200 OK
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 4,
  "result": {}
}

### webhook 1 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "statusUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "status": {
      "state": "TASK_STATE_WORKING",
      "message": {
        "messageId": "4cbb7a5a-31f5-43f9-aa4d-f72c4fddb8cc",
        "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
        "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
        "role": "ROLE_AGENT",
        "parts": [
          {
            "text": "Checking out 9f3c2e1 and starting the suite"
          }
        ]
      },
      "timestamp": "2026-10-06T09:00:05.000Z"
    }
  }
}

### webhook 2 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "artifactUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "artifact": {
      "artifactId": "test-log",
      "name": "test-log.txt",
      "parts": [
        {
          "text": "collected 12 items\n"
        }
      ]
    }
  }
}

### webhook 3 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "artifactUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "artifact": {
      "artifactId": "test-log",
      "parts": [
        {
          "text": "tests/test_charges.py ........  [ 66%]\n"
        }
      ]
    },
    "append": true
  }
}

### webhook 4 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "artifactUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "artifact": {
      "artifactId": "test-log",
      "parts": [
        {
          "text": "tests/test_refunds.py ..F.  [100%]\n"
        }
      ]
    },
    "append": true
  }
}

### webhook 5 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "artifactUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "artifact": {
      "artifactId": "test-log",
      "parts": [
        {
          "text": "FAILED tests/test_refunds.py::test_partial_refund - AssertionError: 450 != 500\n"
        }
      ]
    },
    "append": true
  }
}

### webhook 6 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "artifactUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "artifact": {
      "artifactId": "test-log",
      "parts": [
        {
          "text": "1 failed, 11 passed in 4.21s\n"
        }
      ]
    },
    "append": true,
    "lastChunk": true
  }
}

### webhook 7 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "artifactUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "artifact": {
      "artifactId": "summary",
      "name": "summary.json",
      "parts": [
        {
          "data": {
            "passed": 11,
            "failed": 1,
            "failures": [
              {
                "test": "tests/test_refunds.py::test_partial_refund",
                "error": "AssertionError: 450 != 500"
              }
            ]
          },
          "mediaType": "application/json"
        }
      ]
    },
    "lastChunk": true
  }
}

### webhook 8 · received by the client
POST /a2a-events HTTP/1.1
Content-Type: application/a2a+json
Authorization: Bearer hook_secret_91d2
X-A2A-Notification-Token: planner-run-0006

{
  "statusUpdate": {
    "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
    "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
    "status": {
      "state": "TASK_STATE_COMPLETED",
      "message": {
        "messageId": "ab4d6137-5d85-4787-90f3-859895bc0210",
        "contextId": "e051d022-3c39-4f5c-bd9c-7a902ae474cd",
        "taskId": "d7d3dceb-7333-4676-90ce-36542116a45c",
        "role": "ROLE_AGENT",
        "parts": [
          {
            "text": "1 failed, 11 passed"
          }
        ]
      },
      "timestamp": "2026-10-06T09:00:05.250Z"
    }
  }
}