Look up actor display names

GET

/v1/actors/lookup

• Production

Resolves user IDs and/or API key IDs to their display names (email or label). Used by the console to render “Deleted by” attribution on message detail pages.

At least one of user_id or api_key_id must be provided. If neither is given, the endpoint returns 400.

Both parameters accept comma-separated lists for batch lookups (up to 100 total IDs). IDs that do not exist or belong to a different tenant are silently omitted from the response.

Authorizations

• BearerAuth

Parameters

Query Parameters

user_id

string

One or more Kratos identity IDs (comma-separated)

Example

01935abc-def0-7123-4567-890abcdef012

api_key_id

string

One or more API key IDs (comma-separated)

Example

key_abc123

Responses

200

Actor display names resolved

object

data

object

users

Map of Kratos identity ID to user email. Only present when user_id was requested.

object

key

additional properties

object

email

required

string

api_keys

Map of API key ID to key label. Only present when api_key_id was requested. Keys that exist but have no label are included with an empty string; keys not found or belonging to another tenant are omitted entirely.

object

key

additional properties

object

label

required

string

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Example

{
  "data": {
    "users": {
      "01935abc-def0-7123-4567-890abcdef012": {
        "email": "alice@example.com"
      }
    },
    "api_keys": {
      "key_abc123": {
        "label": "Production Backend"
      }
    }
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

400

Invalid request

object

error

object

code

Machine-readable error code

string

Example

INVALID_REQUEST

message

Human-readable error message

string

Example

endpoint must be a valid HTTPS URL

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Examples

Endpoint not found

{
  "error": {
    "code": "ENDPOINT_NOT_FOUND",
    "message": "endpoint not found"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

Invalid endpoint ID format

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "endpoint_id must be in format ep_xxx"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

Invalid payload

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "payload must be valid JSON"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

Invalid headers

{
  "error": {
    "code": "INVALID_HEADERS",
    "message": "header 'Host' is forbidden and cannot be overridden"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

401

Unauthorized - Invalid or missing API key

object

error

object

code

Machine-readable error code

string

Example

INVALID_REQUEST

message

Human-readable error message

string

Example

endpoint must be a valid HTTPS URL

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Example

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Invalid or missing API key"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

500

Internal server error

object

error

object

code

Machine-readable error code

string

Example

INVALID_REQUEST

message

Human-readable error message

string

Example

endpoint must be a valid HTTPS URL

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Example

{
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "An internal error occurred"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}