---
title: "Add Trust Center subscribers"
method: POST
path: "/trust_exchange/trust_center/subscription/add"
tags: ["trust_exchange"]
---

# Add Trust Center subscribers

`POST /trust_exchange/trust_center/subscription/add`

## Request

- Base URL: `https://cyber-risk.upguard.com/api/public`
- URL: `https://cyber-risk.upguard.com/api/public/trust_exchange/trust_center/subscription/add`
- Auth: API key in header `Authorization`
- TypeScript: <https://skmtc.dev/upguard/apis/upguard-cyberrisk-api/docs/trust_exchange/trust_center/subscription/add/post.ts> (a function with typed inputs; its response is checked against the schema)

Subscribes email addresses to updates from your Trust Centers. Subscribers receive an email
each time you publish a new update. Subscribing an email that is already subscribed reactivates
it. Add up to 100 emails per request.

Required API key permissions: `TrustExchange` and `ReadWrite` (select when creating API key in Account Settings)

## Request body

- AddTrustCenterSubscriptionBody
  - `emails` string[], required: The email addresses to subscribe to your Trust Center updates. Subscribing an email that is already subscribed reactivates it.
  - `subscription_types` string[]: Which of the Trust Center's subscription types to apply this to. `TrustPageUpdates` covers updates shared on the Trust Center; `TrustPageSubprocessors` covers changes to the subprocessors it lists, and requires the subprocessors feature. Omit to apply to every type your organization can use.

## Response `204`

No Content

## Other responses

- `403`: Account does not have access to requested entities
- `422`: An invalid parameter was supplied or a mandatory parameter was missing
- `429`: Too many requests have been made to this endpoint.
- `500`: An internal system error occurred

## Changes

- **2026-11-07** `d044bf6dc61e`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/upguard/apis/upguard-cyberrisk-api/changes/trust_exchange/trust_center/subscription/add/post.md)

---

[API](https://skmtc.dev/upguard/apis/upguard-cyberrisk-api.md) - [All operations](https://skmtc.dev/upguard/apis/upguard-cyberrisk-api/llms.txt) - [OpenAPI document](https://skmtc.dev/upguard/apis/upguard-cyberrisk-api/revisions/d044bf6dc61e?raw)