---
title: "Callback: Add/Update"
method: POST
path: "/cardholders/subscription"
tags: ["Cardholders"]
---

# Callback: Add/Update

`POST /cardholders/subscription`

Subscribe to callbacks for this entity or change an existing callback.

## Request body

- object
  - `callbackUrl` string, uri, required — The URL to send the callback to. Must be a valid and reachable URL. We do some basic validation to ensure the URL is syntactically correct and reachable for Pliant. Only HTTPS URLs are supported.
  - `eventTypes` string[], required — The event types to subscribe to.

## Response `201`

Created

## Other responses

- `401` — Unauthorized
- `403` — Forbidden
- `500` — Internal Server Error

---

[API](https://skmtc.net/getpliant/apis/pliant-customer-api.md) · [All operations](https://skmtc.net/getpliant/apis/pliant-customer-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/getpliant/pliant-customer-api/versions/f3f589cfa718/schema)