# Create or update a silence

**POST /services/mimir/alertmanager/api/v2/silences**

Creates or updates a silence that targets this system's alerts.

The proxy automatically injects a `system_key` matcher for this system into the silence, overwriting any client-supplied `system_key` matcher. This ensures silences can only target this system's alerts.

**Access control:** Requires HTTP Basic Auth with valid system credentials.

**Silence matchers:** The silence must include at least one matcher (e.g., `alertname`). The `system_key` matcher is added automatically and cannot be customized.



## Servers
- Backend API server (port 8080): https://api.your-domain.com/api (Backend API server (port 8080))
- Collect API server (port 8081): https://collect.your-domain.com/api (Collect API server (port 8081))


## Authentication methods
- Basic auth


## Parameters



### Body: application/json (object)

object

## Responses

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