Catalyst Property Event

Triggered when a configured catalyst signal is detected on a property (e.g. pre-probate, foreclosure).

This webhook is only sent if your account is configured to receive webhook events. Contact your Goliath account manager to enable it.

Overview

When a catalyst event is detected, Goliath sends a POST request to your configured webhook URL. The payload includes:

Event metadata (version, timestamp)
Catalyst signal details
Property details and valuation
Ownership data
Skip tracing results (phones, emails, relatives)

Example Payload

All data below is mock data for documentation purposes only.

{
  "version": "2026-01-21",
  "triggeredAt": "2026-03-19T14:00:48.135Z",
  "catalystEvent": {
    "type": "PREPROBATE",
    "summary": "{\"city\":\"Springfield\",\"deceasedAge\":\"99\",\"deceasedDate\":\"January 1, 2026\",\"deceasedName\":\"John Doe\"}",
    "publicationDate": "2026-03-19",
    "url": "https://example.com/fake-preprobate-record.json"
  },
  "property": {
    "url": "https://app.example.com/properties/123-main-st",
    "address": "123 MAIN ST, SPRINGFIELD, USA 00000",
    "metrics": {
      "zestimate": 123456,
      "beds": 3,
      "baths": 2,
      "livingAreaSqFt": 1500,
      "lotSizeAcres": 0.15,
      "propertyType": "SINGLE_FAMILY",
      "yearBuilt": 1900,
      "occupancyStatus": "OWNER_OCCUPIED",
      "estimatedTax": 1234.56,
      "estimatedPrice": 120000,
      "estimatedRent": 1500,
      "lastSaleAmount": 50000,
      "lastSaleDate": "2000-01-01",
      "nameOnTitle": "DOE, JOHN; DOE, JANE",
      "ownerMailingAddress": "PO BOX 123, SPRINGFIELD, USA 00000"
    },
    "parcel": {
      "apn": "000-FAKE-APN",
      "countyFips": "00000",
      "legalDescription": "LOT 1, BLOCK 1, FAKE SUBDIVISION",
      "lotSqFt": 6500,
      "lotAcres": 0.15,
      "zoningCode": "FAKE-R1"
    },
    "owners": [
      {
        "type": "person",
        "name": "john doe",
        "nameOnDeed": true,
        "skipTrace": {
          "phones": [
            { "number": "5550000001", "type": "Mobile", "ranking": 1 },
            { "number": "5550000002", "type": "Residential", "ranking": 2 }
          ],
          "emails": [
            { "email": "john.doe@example.com", "ranking": 1 },
            { "email": "jd@example.com", "ranking": 2 }
          ]
        }
      }
    ],
    "skipTraceResults": [
      {
        "firstName": "John",
        "lastName": "Doe",
        "age": 99,
        "deceased": true,
        "isRelative": false,
        "isNameOnDeed": true,
        "ranking": 1,
        "phones": [
          { "number": "5550000001", "type": "Mobile", "ranking": 1 }
        ],
        "emails": [
          { "email": "john.doe@example.com", "ranking": 1 }
        ]
      },
      {
        "firstName": "Jane",
        "lastName": "Doe",
        "age": 95,
        "deceased": false,
        "isRelative": true,
        "isNameOnDeed": true,
        "ranking": 2,
        "phones": [
          { "number": "5550000003", "type": "Mobile", "ranking": 1 }
        ],
        "emails": [
          { "email": "jane.doe@example.com", "ranking": 1 }
        ]
      },
      {
        "firstName": "Jimmy",
        "lastName": "Doe",
        "age": 60,
        "deceased": false,
        "isRelative": true,
        "isNameOnDeed": false,
        "ranking": 3,
        "phones": [
          { "number": "5550000004", "type": "Mobile", "ranking": 1 }
        ],
        "emails": []
      }
    ]
  }
}

Payload Fields

Field	Type	Description
`version`	string	Schema version of this webhook payload
`triggeredAt`	string (ISO 8601)	Timestamp when the event was triggered
`catalystEvent`	CatalystEvent	Details about the triggering signal
`property`	Property	Enriched property and ownership data

Type Reference

All types used in this payload are documented on the Types page.

Type	Description
CatalystEvent	The trigger signal
CatalystSummary	Parsed contents of `catalystEvent.summary`
Property	Full property object
PropertyMetrics	Valuation and physical details
Parcel	Legal and assessor data
Owner	A single owner entry
SkipTrace	Contact bundle attached to an owner
SkipTraceResult	An individual in the expanded people graph
Phone	Phone number with type and ranking
Email	Email address with ranking

Notes

Opt-in only — you will only receive this payload if your account is configured for webhook delivery.
summary must be parsed — it is a stringified JSON object, not a nested object. Call JSON.parse() on it before accessing its fields.
Ranking — lower ranking = higher confidence across phones, emails, and skip trace results.
Partial data — some fields (emails, ownerMailingAddress, etc.) may be null or empty arrays.
Relatives included — skipTraceResults may include relatives of the owner, not just the owner themselves. Use isRelative to filter.

API documentation

Outbound Webhooks

Inbound Webhooks

Zapier

Contact Enrichment

Outbound Contact Webhook

Triggered when a configured catalyst signal is detected on a property (e.g. pre-probate, foreclosure).

Overview

Example Payload

Payload Fields

Type Reference

Notes

​Triggered when a configured catalyst signal is detected on a property (e.g. pre-probate, foreclosure).

​Overview

​Example Payload

​Payload Fields

​Type Reference

​Notes

Triggered when a configured catalyst signal is detected on a property (e.g. pre-probate, foreclosure).

Overview

Example Payload

Payload Fields

Type Reference

Notes