---
title: "The creator is approaching automatic lockdown for an unpaid invoice."
method: POST
path: "billing.grace_period_warning"
tags: ["billing.* events"]
---

# The creator is approaching automatic lockdown for an unpaid invoice.

`POST billing.grace_period_warning` (webhook)

### When this fires

The creator's account reaches the warning milestone on its overdue clock. That milestone depends on the plan's base price: **day 3** for a creator on a zero-base-price (Free) plan, whose lockdown lands on day 7, and **day 23** for a paid plan, whose lockdown lands on day 30. Fires once per past-due cycle.

Read `days_until_lockdown` from the payload rather than assuming a fixed offset; it carries the actual remaining days for that creator's tier.

### Caveats

- Each past-due cycle produces at most one `billing.grace_period_warning`. If the account recovers and re-enters past_due later, a new cycle and a new warning may issue.
- After lockdown the clock keeps running: a deletion warning at 53 days locked and account deletion at 60 days locked on paid/trial thresholds (3 and 7 days on Free). Neither stage emits a `billing.*` webhook; they surface as notifications only.

### Related events

- `billing.payment_failed`: the chain of failed collections leading here.
- `billing.account_locked`: fires when the lockdown day arrives: 7 days after this event on a paid tier, 4 on Free or an unconverted trial.

## Headers

- `SB-Signature` string, required
- `SB-Event-Id` string, required
- `SB-Event-Name` string, required
- `Content-Type` string, required
- `User-Agent` string, required

## Payload

- object: The envelope every event is delivered in.
  - `id` string, required: A ULID unique to the event, prefixed `evt_`. Every retry carries the same id, so it is the key to deduplicate on.
  - `type` 'billing.grace_period_warning', required: The event name, always `billing.grace_period_warning` here.
  - `created_at` string, date-time, required: When the event was emitted, server time, ISO 8601.
  - `api_version` string, required: The contract version of the payload shape, `2026-05-01` today. A breaking change to a shape ships under a new version.
  - `project_id` string, uuid, nullable, required: The project the event belongs to; null for team-scoped and billing events.
  - `data` object, required: The event-specific payload. Keys that do not apply to a given emission are omitted rather than sent as null, so check for presence.
    - `creator_id` string, uuid, required: Creator approaching lockdown.
    - `past_due_since` string, date-time, required: When the past-due state began.
    - `days_until_lockdown` integer, required: Whole days from emission until lockdown for this creator's tier. Typically `7` on a paid tier and `4` on Free or an unconverted trial; lower if the daily sweep is late, and `0` at the floor.

## Acknowledgement `2XX`

Your endpoint acknowledged the delivery. Any 2xx status within 30 seconds marks it delivered; the response body is ignored.

## Other responses

- `default`: Any other status, a connection failure, or no answer within 30 seconds counts as a failed attempt. The delivery is retried 8 times, after 10 seconds, 30 seconds, 2 minutes, 10 minutes, 1 hour, 6 hours, 1 day, 3 days; the last failure dead-letters it, and it can be retried from the dashboard or `POST /v1/webhook-deliveries/{delivery}/retry`. After 20 consecutive failures the endpoint is paused until it is resumed.

---

[API](https://skmtc.dev/memberpass/apis/subscriby-rest-api.md) · [All operations](https://skmtc.dev/memberpass/apis/subscriby-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/memberpass/apis/subscriby-rest-api/revisions/59c4df91d764?raw)