API docs v1
POST /v1/brands/{brand_id}/contact-lists

Create a contact list

scope write:outreach cost 1 RU idempotent required

Create a static list (contacts added with POST .../contact-lists/{list_id}/contacts) or a dynamic one (is_dynamic with segment_filters, at least one condition) that follows its filter as contacts change. POST .../contact-lists/previews tries a filter first. Requires the editor role and the brand owner on Pro.

Path parameters

Query parameters

  • dry_run boolean optional

    Preview the call without executing it. Runs auth, scope, eligibility and body validation, then returns 200 with a dry_run object reporting the request-unit and credit cost plus a non-consuming quota snapshot. Nothing is debited, reserved, dispatched or mutated. An invalid body still returns 422.

    default: false

Header parameters

  • Idempotency-Key string required

    Required with an API key, else 400 idempotency_key_required: a new value per operation (a UUID works). A retry with the same key and body within 24 hours replays the first response instead of running again. Ignored with dry_run=true.

Request body

application/json required
Type: ContactListCreate
  • name string required

    Name.

    min length: 1 · max length: 200

  • description string (nullable) nullable

    Description.

  • is_dynamic boolean

    true for a list that follows segment_filters.

    default: `false`

  • segment_filters SegmentFilter (nullable) nullable

    Required with at least one condition for a dynamic list.

Example payload 
{
  "is_dynamic": true,
  "name": "Running editors",
  "segment_filters": {
    "conditions": [
      {
        "field": "tier",
        "operator": "lte",
        "value": 2
      },
      {
        "field": "email_verified",
        "operator": "equals",
        "value": true
      }
    ],
    "operator": "AND"
  }
}

Responses

Created a contact list application/json
Type: ContactList
  • brand_id string required

    Owning brand id.

  • contact_count integer required

    Contacts on the list now.

    min: 0

  • id string required

    Contact list id.

  • is_dynamic boolean required

    A dynamic list holds whatever contacts match segment_filters now.

  • name string required

    Name.

  • segment_filters SegmentFilter required

    A dynamic list's filter; empty for a static list.

    Show fields
    Type: SegmentFilter
    • conditions array of SegmentCondition

      The conditions.

      max items: 50

    • operator enum

      How the conditions combine.

      default: `AND`

  • created_at string (nullable) nullable

    When the list was created.

    format: `date-time`

  • description string (nullable) nullable

    Description.

  • object string

    default: `contact_list`

  • updated_at string (nullable) nullable

    Last change.

    format: `date-time`

Example response 
{
  "brand_id": "3f9c7e8a-1b6a-4d8e-92cf-7d9c8b1e2a04",
  "contact_count": 42,
  "created_at": "2026-09-20T10:00:00+00:00",
  "description": "Tier 1 and 2 with a verified email",
  "id": "9b8a7c6d-5e4f-4a3b-9c2d-1e0f9a8b7c6d",
  "is_dynamic": true,
  "name": "Running editors",
  "object": "contact_list",
  "segment_filters": {
    "conditions": [
      {
        "field": "tier",
        "operator": "lte",
        "value": 2
      },
      {
        "field": "email_verified",
        "operator": "equals",
        "value": true
      }
    ],
    "operator": "AND"
  },
  "updated_at": "2026-09-20T10:00:00+00:00"
}
Request validation failed application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "validation_error",
    "message": "Request validation failed"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Missing or invalid credentials application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "unauthorized",
    "message": "Missing or invalid credentials"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
You do not have permission to access this resource application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "forbidden",
    "message": "You do not have permission to access this resource"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Resource not found application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "not_found",
    "message": "Resource not found"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Resource conflict application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "conflict",
    "message": "Resource conflict"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Request body did not match the expected schema application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "body_validation_error",
    "message": "Request body did not match the expected schema"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Per-minute rate limit exceeded application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Per-minute rate limit exceeded"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
An unexpected error occurred application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "internal_error",
    "message": "An unexpected error occurred"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}
Service temporarily unavailable, please retry application/json
Type: ApiError
  • error object required
    Show fields
    • code string required

      Stable machine-readable error code from the catalog.

    • message string required

      Human-readable description suitable for logging.

    • details object

      Optional, code-specific context (e.g. errors array for validation_error, retry_after for service_unavailable). Shape depends on error.code; treat as opaque otherwise.

      Show fields

      Empty object (no properties).

  • request_id string

    Server-generated correlation id for the request. Mirrors the X-Correlation-ID response header. Include this when contacting support.

    format: `uuid`

Example response 
{
  "error": {
    "code": "service_unavailable",
    "message": "Service temporarily unavailable, please retry"
  },
  "request_id": "9f6c4e8a-1d3b-4c8b-9f1e-7a3b1c2d3e4f"
}