# Install a license.

**PUT /api/systems/license**

Install a license key on this self-hosted deployment, replacing the installed license if there is one. The key's signature is verified against the public key built into Logto before it is saved, and a key past its expiration is rejected as a stale copy. Returns 501 on Logto Cloud.


## Servers
- Logto endpoint address.: https://[tenant_id].logto.app (Logto endpoint address.)


## Authentication methods
- O auth2


## Parameters



### Body: application/json (object)

- **license** (string)
  The license key to install, as issued by Logto Cloud.



## Responses
### 204
The license has been installed.

### 400
The license key is invalid or has been tampered with, or it has expired.

### 401
Unauthorized

### 403
Forbidden

### 501
Licenses are only available on self-hosted deployments.


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