Hash properties - Docs

Hashes sensitive fields with SHA256 using a salt. This helps protect user privacy while maintaining data consistency.

Configuration

Option	Description
`Salt` Type: string Required: True	A secret salt used for hashing. This should be kept secure and consistent.
`Fields to hash` Type: string Required: True	Comma-separated list of field names to hash. Can include both event properties and top-level event fields like distinct_id.
`Also hash $set and $set_once properties` Type: boolean Required: False	Whether to also hash $set and $set_once properties that are used to update Person properties.

Using our REST API you can create this transformation like so:

Terminal

# Create a new destination
curl --location 'https://us.i.posthog.com/api/environments/:project_id/hog_functions' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <POSTHOG_PERSONAL_API_KEY>' \
--data '{
    "type": "transformation",
    "name": "Hash properties",
    "inputs": {
        "salt": {
            "value": ""
        },
        "privateFields": {
            "value": ""
        }
    },
    "enabled": true,
    "template_id": "template-hash-properties"
}'