Receiving Events

Radar delivers tracked data to your backend using webhooks. Before you can receive events, you must configure a webhook endpoint. You can choose between two delivery modes depending on your use case.

Choosing a Delivery Mode

Event-Based Delivery

Events are pushed to your webhook as they occur, in near real-time.Pros:

Low latency for real-time applications.
Immediate access to individual events.

Tradeoffs:

Requires you to perform session stitching.
You must calculate session-level metrics (like time on page).

Session-Based Delivery (Recommended)

Events are grouped by session and sent in a single payload after the session ends (typically 30 minutes of inactivity).Pros:

Session metrics are pre-computed for you.
Data is fully enriched and ready for analysis.
Simpler to process and store.

Event-based and session-based payloads share the same structure. The difference is that event-based payloads contain a single event in the events array and are sent in near real-time, while session-based payloads contain all events from the session and are sent after 30 minutes of inactivity.

Selecting your delivery mode

Set the delivery mode with the event_aggregation field (per_session or per_event) on the webhook configuration endpoint. See the API Reference for the request and response details.

Need an identification during a session rather than waiting for a webhook? Call the Identify company for a session endpoint (POST /radar/operator/v1/tracking-scripts/{trackingScriptId}/company/find) with the visitor’s session_uuid.By default this lookup only covers sessions from the last 2 days. To identify an older session, pass the optional since field — an ISO 8601 date (UTC) naming the day the session took place. The lookup is then scoped to that single calendar day. The date may be up to 30 days in the past and cannot be in the future.

cURL

curl -X POST 'https://api.snitcher.com/radar/operator/v1/tracking-scripts/{trackingScriptId}/company/find' \
     -H 'Authorization: Bearer YOUR_API_KEY' \
     -H 'Content-Type: application/json' \
     -d '{
       "session_uuid": "42b7c5e0-76c0-4f8d-9b7c-6b8e1a2d3f45",
       "since": "2026-05-11"
     }'

Example: Pageview Event (Session-Based)

This example shows a session payload containing a single $pageview event. Note the enriched context and pre-computed engagement times.

Pageview Event

{
  "internal_identifier": "my-customer-id",
  "session_uuid": "123e4567-e89b-12d3-a456-426614174000",
  "start_time": "2025-06-16T13:00:00+00:00",
  "last_activity": "2025-06-16T13:15:42+00:00",
  "engagement_time": 937,
  "user_properties": {
    "$uuid": "anonymous-user-4455"
  },
  "events": [
    {
      "event_uuid": "89ab1234-cdef-5678-9012-3456789abcde",
      "event_name": "$pageview",
      "created_at": "2025-06-16T13:02:17+00:00",
      "context": {
        "type": "browser",
        "geo": {
          "ip": "192.0.2.45",
          "country": "Germany",
          "region": "Berlin",
          "city": "Berlin"
        },
        "device_uuid": "device-789",
        "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36",
        "browser": {
          "name": "Chrome",
          "version": "122.0.0.0"
        },
        "device": {
          "type": "Desktop",
          "operating_system": "Windows",
          "operating_system_version": "10"
        },
        "referrer": {
          "scheme": "https",
          "host": "newsletter.example.com",
          "path": "/latest",
          "query": "utm_source=newsletter&utm_medium=email",
          "fragment": "section-2"
        },
        "utm": {
          "source": "newsletter",
          "medium": "email",
          "campaign": "june-product-update",
          "content": "cta-button",
          "term": "conversion"
        },
        "page": {
          "url": "https://app.example.com/dashboard?view=analytics",
          "title": "User Dashboard - Analytics Overview",
          "engagement_time": 542
        }
      },
      "event_properties": {
        "$url": "https://app.example.com/dashboard?view=analytics",
        "$title": "User Dashboard - Analytics Overview",
        "$scheme": "https",
        "$host": "app.example.com",
        "$path": "/dashboard",
        "$query": {
          "view": "analytics"
        },
        "$fragment": "section-2",
        "$total_time_on_page": 937,
        "$engaged_time_on_page": 542
      },
      "user_properties": {
        "$uuid": "anonymous-user-4455"
      },
      "meta": {
        "library": {
          "name": "radar.js",
          "version": "1.8.0"
        }
      }
    }
  ]
}

Example: Identified Visitor (Session-Based)

When a visitor is identified — for example via the identify SDK method or an sn_email query parameter — user_properties includes their $email and any $traits at both the session and event level.

Identified Visitor

{
  "internal_identifier": "my-customer-id",
  "session_uuid": "123e4567-e89b-12d3-a456-426614174000",
  "start_time": "2025-06-16T13:00:00+00:00",
  "last_activity": "2025-06-16T13:15:42+00:00",
  "engagement_time": 937,
  "user_properties": {
    "$uuid": "anonymous-user-4455",
    "$email": "jane.doe@example.com",
    "first_name": "Jane",
    "title": "VP Marketing"
  },
  "events": [
    {
      "event_uuid": "89ab1234-cdef-5678-9012-3456789abcde",
      "event_name": "$pageview",
      "created_at": "2025-06-16T13:02:17+00:00",
      "context": {
        "type": "browser",
        "geo": {
          "ip": "192.0.2.45",
          "country": "Germany",
          "region": "Berlin",
          "city": "Berlin"
        },
        "device_uuid": "device-789",
        "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36",
        "browser": {
          "name": "Chrome",
          "version": "122.0.0.0"
        },
        "device": {
          "type": "Desktop",
          "operating_system": "Windows",
          "operating_system_version": "10"
        },
        "referrer": {
          "scheme": "https",
          "host": "newsletter.example.com",
          "path": "/latest",
          "query": "utm_source=newsletter&utm_medium=email",
          "fragment": null
        },
        "utm": {
          "source": "newsletter",
          "medium": "email",
          "campaign": "june-product-update",
          "content": "cta-button",
          "term": null
        },
        "page": {
          "url": "https://app.example.com/pricing?sn_email=jane.doe@example.com&sn_trait_first_name=Jane&sn_trait_title=VP+Marketing",
          "title": "Pricing - Plans for Every Team",
          "engagement_time": 542
        }
      },
      "event_properties": {
        "$url": "https://app.example.com/pricing?sn_email=jane.doe@example.com&sn_trait_first_name=Jane&sn_trait_title=VP+Marketing",
        "$title": "Pricing - Plans for Every Team",
        "$scheme": "https",
        "$host": "app.example.com",
        "$path": "/pricing",
        "$query": {
          "sn_email": "jane.doe@example.com",
          "sn_trait_first_name": "Jane",
          "sn_trait_title": "VP Marketing"
        },
        "$fragment": null,
        "$total_time_on_page": 937,
        "$engaged_time_on_page": 542
      },
      "user_properties": {
        "$uuid": "anonymous-user-4455",
        "$email": "jane.doe@example.com",
        "$traits": {
          "first_name": "Jane",
          "title": "VP Marketing"
        }
      },
      "meta": {
        "library": {
          "name": "radar.js",
          "version": "1.8.0"
        }
      }
    }
  ]
}

Example: Form Submit Event (Session-Based)

This example shows how a form submit event appears in a session payload.

Form Submit Event

{
  "internal_identifier": "my-customer-id",
  "session_uuid": "123e4567-e89b-12d3-a456-426614174000",
  "start_time": "2025-06-16T13:00:00+00:00",
  "last_activity": "2025-06-16T13:15:42+00:00",
  "engagement_time": 937,
  "user_properties": {
    "$uuid": "pirate-user-456"
  },
  "events": [
    {
      "event_uuid": "89ab1234-cdef-5678-9012-3456789abcde",
      "event_name": "$form_submit",
      "created_at": "2025-06-16T13:02:17+00:00",
      "context": {
        "type": "browser",
        "geo": {
          "ip": "198.51.100.23",
          "country": "Netherlands",
          "region": "North Holland",
          "city": "Amsterdam"
        },
        "device_uuid": "pirate-device-789",
        "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 12_6_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15",
        "browser": {
          "name": "Safari",
          "version": "16.4"
        },
        "device": {
          "type": "Desktop",
          "operating_system": "macOS",
          "operating_system_version": "12.6.1"
        },
        "page": {
          "url": "https://www.example.com/pricing",
          "title": "Pricing - Plans for Every Team",
          "engagement_time": 542
        }
      },
      "event_properties": {
        "$form_id": "contact-form",
        "$form_name": "Contact us",
        "$fields": [
          {
            "$name": "full_name",
            "$type": "text",
            "$tag_name": "input",
            "$value": "Jane Doe"
          },
          {
            "$name": "email",
            "$type": "email",
            "$tag_name": "input",
            "$value": "jane.doe@example.com"
          },
          {
            "$name": "message",
            "$type": "textarea",
            "$tag_name": "textarea",
            "$value": "I'd like to learn more about your pricing options."
          }
        ]
      },
      "meta": {
        "library": {
          "name": "radar.js",
          "version": "1.8.0"
        }
      }
    }
  ]
}

Example: Custom Event (Session-Based)

This example shows how a custom track event appears in a session payload. The data from the second argument of the track call is nested inside event_properties.

Custom Event

{
  "internal_identifier": "my-customer-id",
  "session_uuid": "123e4567-e89b-12d3-a456-426614174000",
  "start_time": "2025-06-16T13:00:00+00:00",
  "last_activity": "2025-06-16T13:15:42+00:00",
  "engagement_time": 937,
  "user_properties": {
    "$uuid": "pirate-user-456"
  },
  "events": [
    {
      "event_uuid": "89ab1234-cdef-5678-9012-3456789abcde",
      "event_name": "CTA_clicked",
      "created_at": "2025-06-16T13:02:17+00:00",
      "context": {
        "type": "browser",
        "geo": {
          "ip": "198.51.100.23",
          "country": "Netherlands",
          "region": "North Holland",
          "city": "Amsterdam"
        },
        "device_uuid": "pirate-device-789",
        "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 12_6_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15",
        "browser": {
          "name": "Safari",
          "version": "16.4"
        },
        "device": {
          "type": "Desktop",
          "operating_system": "macOS",
          "operating_system_version": "12.6.1"
        },
        "page": {
          "url": "https://www.example.com/pricing",
          "title": "Pricing - Plans for Every Team",
          "engagement_time": 542
        }
      },
      "event_properties": {
        "cta_text": "Try for free",
        "cta_position": "navbar-right"
      },
      "meta": {
        "library": {
          "name": "radar.js",
          "version": "1.8.0"
        }
      }
    }
  ]
}

Example: Click Event (Session-Based)

This example shows how a click event appears in a session payload when clickTracking is enabled.

Click Event

{
  "internal_identifier": "my-customer-id",
  "session_uuid": "123e4567-e89b-12d3-a456-426614174000",
  "start_time": "2025-06-16T13:00:00+00:00",
  "last_activity": "2025-06-16T13:15:42+00:00",
  "engagement_time": 937,
  "user_properties": {
    "$uuid": "pirate-user-456"
  },
  "events": [
    {
      "event_uuid": "89ab1234-cdef-5678-9012-3456789abcde",
      "event_name": "$click",
      "created_at": "2025-06-16T13:05:30+00:00",
      "context": {
        "type": "browser",
        "geo": {
          "ip": "198.51.100.23",
          "country": "Netherlands",
          "region": "North Holland",
          "city": "Amsterdam"
        },
        "device_uuid": "pirate-device-789",
        "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 12_6_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15",
        "browser": {
          "name": "Safari",
          "version": "16.4"
        },
        "device": {
          "type": "Desktop",
          "operating_system": "macOS",
          "operating_system_version": "12.6.1"
        },
        "page": {
          "url": "https://www.example.com/pricing",
          "title": "Pricing - Plans for Every Team",
          "engagement_time": 542
        }
      },
      "event_properties": {
        "$element_tag": "a",
        "$element_text": "Start Free Trial",
        "$href": "https://www.example.com/signup",
        "$element_classes": "btn btn-primary",
        "$element_path": "body > main > section.hero > a.btn"
      },
      "meta": {
        "library": {
          "name": "radar.js",
          "version": "1.8.0"
        }
      }
    }
  ]
}

Example: Download Event (Session-Based)

This example shows how a download event appears in a session payload when downloadTracking is enabled.

Download Event

{
  "internal_identifier": "my-customer-id",
  "session_uuid": "123e4567-e89b-12d3-a456-426614174000",
  "start_time": "2025-06-16T13:00:00+00:00",
  "last_activity": "2025-06-16T13:15:42+00:00",
  "engagement_time": 937,
  "user_properties": {
    "$uuid": "pirate-user-456"
  },
  "events": [
    {
      "event_uuid": "89ab1234-cdef-5678-9012-3456789abcde",
      "event_name": "$download",
      "created_at": "2025-06-16T13:08:12+00:00",
      "context": {
        "type": "browser",
        "geo": {
          "ip": "198.51.100.23",
          "country": "Netherlands",
          "region": "North Holland",
          "city": "Amsterdam"
        },
        "device_uuid": "pirate-device-789",
        "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 12_6_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15",
        "browser": {
          "name": "Safari",
          "version": "16.4"
        },
        "device": {
          "type": "Desktop",
          "operating_system": "macOS",
          "operating_system_version": "12.6.1"
        },
        "page": {
          "url": "https://www.example.com/resources",
          "title": "Resources - Whitepapers & Guides",
          "engagement_time": 320
        }
      },
      "event_properties": {
        "$href": "https://www.example.com/files/2025-product-guide.pdf",
        "$file_name": "2025-product-guide.pdf",
        "$element_path": "body > main > section.resources > a.download-link"
      },
      "meta": {
        "library": {
          "name": "radar.js",
          "version": "1.8.0"
        }
      }
    }
  ]
}

Get Started

Integration

Guides

Choosing a Delivery Mode

Event-Based Delivery

Session-Based Delivery (Recommended)

Selecting your delivery mode

Example: Pageview Event (Session-Based)

Example: Identified Visitor (Session-Based)

Example: Form Submit Event (Session-Based)

Example: Custom Event (Session-Based)

Example: Click Event (Session-Based)

Example: Download Event (Session-Based)

​Choosing a Delivery Mode

Event-Based Delivery

Session-Based Delivery (Recommended)

​Selecting your delivery mode

​Example: Pageview Event (Session-Based)

​Example: Identified Visitor (Session-Based)

​Example: Form Submit Event (Session-Based)

​Example: Custom Event (Session-Based)

​Example: Click Event (Session-Based)

​Example: Download Event (Session-Based)

Choosing a Delivery Mode

Selecting your delivery mode

Example: Pageview Event (Session-Based)

Example: Identified Visitor (Session-Based)

Example: Form Submit Event (Session-Based)

Example: Custom Event (Session-Based)

Example: Click Event (Session-Based)

Example: Download Event (Session-Based)