SellApp
API ReferencePromotions

Replace promotion phases

Replace a promotion's complete ordered phase set.

Send every desired active phase in evaluation order. At least one phase is required. Referenced old phases are retained as soft-deleted history; unreferenced old phases are purged.

This replacement model prevents changes to a promotion from rewriting the discount details attached to historical orders.

GET
/v2/promotions/{promotion}/phases

Authorization

AuthorizationBearer <token>

Provide your SellApp API key as a bearer token.

In: header

Path Parameters

promotion*integer

The promotion path parameter.

Header Parameters

X-STORE?string

Store slug. Required for OAuth access tokens. API keys may omit it to use their current store, or the first accessible store when no current store is selected.

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

curl -X GET "https://sell.app/api/v2/promotions/0/phases" \  -H "X-STORE: launch-lab"
{
  "data": [
    {
      "id": 31,
      "promotion_id": 30,
      "sort_order": 1,
      "discount_type": "percentage",
      "discount_value": "10.00",
      "ends_at": null,
      "max_redemptions": null,
      "minimum_amount": null,
      "created_at": "2026-09-01T12:00:00Z",
      "updated_at": "2026-09-01T12:00:00Z",
      "deleted_at": null
    }
  ]
}
{
  "type": "invalid_request_error",
  "code": "bad_request",
  "message": "The request could not be understood.",
  "status": 400,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#bad-request"
}
{
  "type": "authentication_error",
  "code": "unauthenticated",
  "message": "Unauthenticated.",
  "status": 401,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#unauthenticated"
}
{
  "type": "authorization_error",
  "code": "forbidden",
  "message": "This action is unauthorized.",
  "status": 403,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#forbidden"
}
{
  "type": "not_found_error",
  "code": "resource_not_found",
  "message": "Not Found.",
  "status": 404,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#resource-not-found"
}
{
  "type": "validation_error",
  "code": "validation_failed",
  "message": "The selected product variant id is invalid.",
  "status": 422,
  "param": "product_variant_id",
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#validation-failed",
  "errors": {
    "product_variant_id": [
      "The selected product variant id is invalid."
    ]
  }
}
{
  "type": "rate_limit_error",
  "code": "rate_limit_exceeded",
  "message": "Too Many Attempts.",
  "status": 429,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#rate-limit-exceeded"
}
{
  "type": "api_error",
  "code": "api_error",
  "message": "Server Error",
  "status": 500,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#api-error"
}
PUT
/v2/promotions/{promotion}/phases

Authorization

AuthorizationBearer <token>

Provide your SellApp API key as a bearer token.

In: header

Path Parameters

promotion*integer

The promotion path parameter.

Header Parameters

X-STORE?string

Store slug. Required for OAuth access tokens. API keys may omit it to use their current store, or the first accessible store when no current store is selected.

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

curl -X PUT "https://sell.app/api/v2/promotions/0/phases" \  -H "X-STORE: launch-lab" \  -H "Content-Type: application/json" \  -d '{    "phases": [      {        "discount_type": "percentage",        "discount_value": "20",        "ends_at": "2026-08-04T00:00:00Z",        "max_redemptions": 200,        "minimum_amount": "10"      },      {        "discount_type": "fixed",        "discount_value": "5",        "ends_at": null,        "max_redemptions": null,        "minimum_amount": "25"      }    ]  }'
{
  "data": [
    {
      "discount_type": "percentage",
      "discount_value": "20",
      "ends_at": "2026-08-04T00:00:00Z",
      "max_redemptions": 200,
      "minimum_amount": "10",
      "id": 101,
      "promotion_id": 1,
      "sort_order": 1
    },
    {
      "discount_type": "fixed",
      "discount_value": "5",
      "ends_at": null,
      "max_redemptions": null,
      "minimum_amount": "25",
      "id": 102,
      "promotion_id": 1,
      "sort_order": 2
    }
  ]
}
{
  "type": "invalid_request_error",
  "code": "bad_request",
  "message": "The request could not be understood.",
  "status": 400,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#bad-request"
}
{
  "type": "authentication_error",
  "code": "unauthenticated",
  "message": "Unauthenticated.",
  "status": 401,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#unauthenticated"
}
{
  "type": "authorization_error",
  "code": "forbidden",
  "message": "This action is unauthorized.",
  "status": 403,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#forbidden"
}
{
  "type": "not_found_error",
  "code": "resource_not_found",
  "message": "Not Found.",
  "status": 404,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#resource-not-found"
}
{
  "type": "validation_error",
  "code": "validation_failed",
  "message": "The selected product variant id is invalid.",
  "status": 422,
  "param": "product_variant_id",
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#validation-failed",
  "errors": {
    "product_variant_id": [
      "The selected product variant id is invalid."
    ]
  }
}
{
  "type": "rate_limit_error",
  "code": "rate_limit_exceeded",
  "message": "Too Many Attempts.",
  "status": 429,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#rate-limit-exceeded"
}
{
  "type": "api_error",
  "code": "api_error",
  "message": "Server Error",
  "status": 500,
  "param": null,
  "request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
  "docs_url": "https://sell.app/docs/api/errors#api-error"
}

Update a promotion

Update promotion settings and optionally replace its phases.

Delete a promotion

Delete a promotion while retaining referenced order history.