> ## Documentation Index
> Fetch the complete documentation index at: https://api-reference.hyperswitch.io/llms.txt
> Use this file to discover all available pages before exploring further.

# API Keys

> Curl examples for creating, listing, and revoking Decision Engine API keys.

# API Keys

API keys are intended for service-to-service traffic. Use the returned `api_key` value as `x-api-key` for protected endpoints.

## Create API Key

```bash theme={null}
curl --location "$BASE_URL/api-key/create" \
  --header "$AUTH_HEADER" \
  --header "Content-Type: application/json" \
  --data '{
    "merchant_id": "merchant_demo",
    "description": "backend integration key"
  }'
```

```json theme={null}
{
  "key_id": "018f...",
  "api_key": "DE_...",
  "key_prefix": "DE_abcd",
  "merchant_id": "merchant_demo",
  "description": "backend integration key",
  "created_at": "2026-04-25 10:00:00"
}
```

## List API Keys

```bash theme={null}
curl "$BASE_URL/api-key/list/merchant_demo" \
  --header "$AUTH_HEADER"
```

## Revoke API Key

```bash theme={null}
curl --request DELETE "$BASE_URL/api-key/018f-key-id" \
  --header "$AUTH_HEADER"
```