---
title: "Polar Webhook"
method: POST
path: "/billing/polar/webhook"
tags: ["billing"]
---

# Polar Webhook

`POST /billing/polar/webhook`

## Request

- Base URL: `https://mcp.sentinelx.app` (the document declares no server; this is the origin it was published from)
- URL: `https://mcp.sentinelx.app/billing/polar/webhook`
- Auth: none declared

Receive a Polar webhook: verify signature, apply subscription state,
reconcile live host slots. Returns 2xx on accept, 4xx on a bad signature.

We read the RAW body before any parsing (signatures cover exact bytes).

## Response `200`

Successful Response

- unknown

---

[API](https://skmtc.dev/sentinelx/apis/sentinelx-hub.md) · [All operations](https://skmtc.dev/sentinelx/apis/sentinelx-hub/llms.txt) · [OpenAPI document](https://skmtc.dev/sentinelx/apis/sentinelx-hub/revisions/d1f84924795e?raw)