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OpenAPI 3.1.02026-08-163864115.7 MB

c363cb2feb95

Memberships

Extend Membership

Adds free days to a membership, extending its current billing period, expiration date, or trial depending on the plan type.

post/memberships/{id}/extend

Headers

Idempotency-Keystring
Example:d9105228-4a08-46b1-8b91-42fed586d383

A unique key that makes this request safe to retry. See Idempotent requests.

Request body

daysinteger required

Number of free days to add (1-1095).

Example request

{
  "days": 7
}

Response

membership extended

cancel_at_period_endboolean required

Whether the membership is set to cancel when the current billing period ends. Only meaningful for recurring plans.

created_atstring required

When the membership was created, as an ISO 8601 timestamp.

current_period_endstring nullable required

When the current billing period renews, or when a non-renewing membership expires, as an ISO 8601 timestamp. null for one-time purchases with no expiration.

idstring required

Membership ID, prefixed mem_.

license_keystring nullable required

The software license key for this membership. Only present when the product includes a software licensing experience.

metadataobject required

Custom key-value pairs stored on the membership, commonly used for software licensing.

plan_idstring required

The plan the buyer purchased, prefixed plan_.

product_idstring required

The product this membership grants access to, prefixed prod_.

status'trialing' | 'active' | 'past_due' | 'completed' | 'canceled' | 'expired' | 'unresolved' required

Billing state of the membership. active/trialing memberships grant access; past_due is the grace period after a failed payment; completed one-time purchases keep access; canceled/expired do not.

user_idstring nullable required

The buyer, prefixed user_. null when the buyer is another business or the membership is unclaimed.

Example response

{
  "account": {
    "id": "biz_xxxxxxxxxxxxxx",
    "logo_url": "https://assets-2-rough.whop.com/uploads/image/2026-01-01/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
    "route": "shine-time-auto-detailing",
    "title": "Shine Time Auto Detailing"
  },
  "created_at": "2026-01-01T12:00:00.000Z",
  "current_period_end": "2026-01-01T12:00:00.000Z",
  "id": "mem_xxxxxxxxxxxxxx",
  "license_key": "WHOP-XXXX-XXXX-XXXX",
  "member": {
    "access_level": "customer",
    "last_accessed_at": "2026-01-01T12:00:00.000Z",
    "position": 1767268800000
  },
  "metadata": {},
  "plan_id": "plan_xxxxxxxxxxxxxx",
  "product_id": "prod_xxxxxxxxxxxxxx",
  "status": "active",
  "user_id": "user_xxxxxxxxxxxxxx"
}