Zernio
Zernio
API Reference

Custom Fields

List custom field definitionsGETCreate custom fieldPOSTSet custom field valuePUTUpdate custom fieldPATCHDelete custom fieldDELETEClear custom field valueDELETE
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Custom Fields

Set custom field value

Set or overwrite a custom field value on a contact. The value type must match the field definition.

PUT
/v1/contacts/{contactId}/fields/{slug}

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Path Parameters

contactId*string
slug*string

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Response Body

application/json

application/json

Empty
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Create custom field

Create a new custom field definition. Supported types are text, number, date, boolean, and select.

Update custom field

Update a custom field definition. The field type cannot be changed after creation.

value*unknown

Field value (type depends on field definition)