Create contact identifier

Create contact identifier

post

https://api.bird.comhttp://localhost:3000https://api.bird.ai

/workspaces/{workspaceId}/contacts/{contactId}/identifiers

This endpoint is used to create a new identifier for a contact. The identifier will be added to the contact and can be used for different purposes such as targeting, mapping, and more.

Authorizations

MessageBird_userMessageBird_accessKey

AuthorizationstringRequired

An access token issued to a user.

Path parameters

workspaceIdstring · uuidRequired

Your workspace identifier.

Example: b4e02c85-c6d2-4b15-8885-e09671799c61

contactIdstringRequired

The ID of a contact.

Example: b4e02c85-c6d2-4b15-8885-e09671799c61

Body

application/json

keystring · min: 1 · max: 64Required

The identifier key.

Example: secondaryEmailAddress

valuestring · min: 1 · max: 500Required

The identifier value.

Example: [email protected]

Responses

201

The identifier was created successfully.

application/json

404

The contact or workspace was not found.

application/json

409

The HTTP could not be completed because of a conflict with the current state of the resource.

application/json

422

The HTTP request is well-formed but was unable to be processed. The HTTP response should include details about the error.

application/json

post

/workspaces/{workspaceId}/contacts/{contactId}/identifiers

HTTPcURLJavaScriptPython

POST /workspaces/{workspaceId}/contacts/{contactId}/identifiers HTTP/1.1
Host: api.bird.com
Authorization: Bearer YOUR_SECRET_TOKEN
Content-Type: application/json
Accept: */*
Content-Length: 118

{
  "key": "secondaryEmailAddress",
  "value": "[email protected]",
  "properties": {
    "countryCode": "US",
    "isGmail": true
  }
}

{
  "contactId": "123e4567-e89b-12d3-a456-426614174000",
  "key": "secondaryEmailAddress",
  "value": "[email protected]",
  "properties": {
    "ANY_ADDITIONAL_PROPERTY": "anything"
  },
  "createdAt": "2026-01-08T19:11:07.826Z"
}

Examples

Let's establish some of our data that will be used in the following examples:

• Workspace ID: a1405560-c8d3-4b1a-877d-3f449ad95352

• AccessKey: abcd

• Contact ID: 12bd0e40-9361-4e32-8b26-99b4ab7eae09

Create an identifier without properties

In this example, we're creating an identifier without custom properties.

Request

curl -X POST "https://api.bird.com/workspaces/a1405560-c8d3-4b1a-877d-3f449ad95352/contacts/12bd0e40-9361-4e32-8b26-99b4ab7eae09/identifiers" \
-H "Content-Type: application/json" \
-H "Authorization: AccessKey abcd" \
-d '{
  "key": "emailaddress",
  "value": "[email protected]"
}'

Response (200 OK)

Create an identifier with properties

In this example, we're creating an identifier with custom properties.

Request

curl -X POST "https://api.bird.com/workspaces/a1405560-c8d3-4b1a-877d-3f449ad95352/contacts/12bd0e40-9361-4e32-8b26-99b4ab7eae09/identifiers" \
-H "Content-Type: application/json" \
-H "Authorization: AccessKey abcd" \
-d '{
  "key": "emailaddress",
  "value": "[email protected]",
  "properties": {
    "isGmail": true
  }
}'

Response (200 OK)