---
title: "Receive Polar webhook"
method: POST
path: "/webhooks/polar"
tags: ["webhooks"]
---

# Receive Polar webhook

`POST /webhooks/polar`

## Request body

- PolarWebhookPayload

## Response `200`

Acknowledged

- WebhookAck
  - `received` true, required

## Other responses

- `400` — Bad webhook request
- `401` — Invalid signature
- `413` — Payload too large
- `500` — Dispatch failed
- `503` — Webhook not configured

## Changes

- **2026-08-25** `55772030ddd3` — 15 warning
  - removed the optional property `code` from the response with the `400` status
  - removed the optional property `code` from the response with the `401` status
  - removed the optional property `code` from the response with the `413` status
  - removed the optional property `code` from the response with the `500` status
  - …11 more
- **2026-08-19** `b38f8e603649` — 15 info
  - added the optional property `code` to the response with the `400` status
  - added the optional property `code` to the response with the `401` status
  - added the optional property `code` to the response with the `413` status
  - added the optional property `code` to the response with the `500` status
  - …11 more

[Change history](https://skmtc.dev/crosmos/apis/crosmos-api/changes/webhooks/polar/post.md)

---

[API](https://skmtc.dev/crosmos/apis/crosmos-api.md) · [All operations](https://skmtc.dev/crosmos/apis/crosmos-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/crosmos/crosmos-api/revisions/55772030ddd3/schema)