---
layout: "api"
page_title: "MSSQL Secret Backend - HTTP API"
sidebar_current: "docs-http-secret-mssql"
description: |-
  This is the API documentation for the Vault MSSQL secret backend.
---

# MSSQL Secret Backend HTTP API

This is the API documentation for the Vault MSSQL secret backend. For general
information about the usage and operation of the MSSQL backend, please see
the [Vault MSSQL backend documentation](/docs/secrets/mssql/index.html).

This documentation assumes the MSSQL backend is mounted at the `/mssql`
path in Vault. Since it is possible to mount secret backends at any location,
please update your API calls accordingly.

## Configure Connection

This endpoint configures the connection DSN used to communicate with Microsoft
SQL Server.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `POST`   | `/mssql/config/connection`   | `204 (empty body)`     |

### Parameters

- `connection_string` `(string: <required>)` – Specifies the MSSQL DSN.

- `max_open_connections` `(int: 2)` – Specifies the maximum number of open
  connections to the database.

- `max_idle_connections` `(int: 0)` – Specifies the maximum number of idle
  connections to the database. A zero uses the value of `max_open_connections`
  and a negative value disables idle connections. If larger than
  `max_open_connections` it will be reduced to be equal.

### Sample Payload

```json
{
  "connection_string": "Server=myServerAddress;Database=myDataBase;User Id=myUsername; Password=myPassword;"
}
```

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    --request POST \
    --data @payload.json \
    https://vault.rocks/v1/mssql/config/connection
```

## Configure Lease

This endpoint configures the lease settings for generated credentials.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `POST`   | `/mysql/config/lease`        | `204 (empty body)`     |

### Parameters

- `lease` `(string: <required>)` – Specifies the lease value provided as a
  string duration with time suffix. "h" (hour) is the largest suffix.

- `lease_max` `(string: <required>)` – Specifies the maximum lease value
  provided as a string duration with time suffix. "h" (hour) is the largest
  suffix.

### Sample Payload

```json
{
  "lease": "12h",
  "lease_max": "24h"
}
```

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    --request POST \
    --data @payload.json \
    https://vault.rocks/v1/mssql/config/lease
```

## Create Role

This endpoint creates or updates the role definition.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `POST`   | `/mssql/roles/:name`         | `204 (empty body)`     |

### Parameters

- `sql` `(string: <required>)` – Specifies the SQL statements executed to create
  and configure the role.  The '{{name}}' and '{{password}}' values will be
  substituted. Must be a semicolon-separated string, a base64-encoded
  semicolon-separated string, a serialized JSON string array, or a
  base64-encoded serialized JSON string array.

### Sample Payload

```json
{
  "sql": "CREATE LOGIN ..."
}
```

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    --request POST \
    --data @payload.json \
    https://vault.rocks/v1/mssql/roles/my-role
```

## Read Role

This endpoint queries the role definition.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `GET`    | `/mssql/roles/:name`         | `200 application/json` |

### Parameters

- `name` `(string: <required>)` – Specifies the name of the role to read. This
  is specified as part of the URL.

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    https://vault.rocks/v1/mssql/roles/my-role
```

### Sample Response

```json
{
  "data": {
    "sql": "CREATE LOGIN..."
  }
}
```

## List Roles

This endpoint returns a list of available roles. Only the role names are
returned, not any values.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `LIST`   | `/mssql/roles`               | `200 application/json` |

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    --request LIST \
    https://vault.rocks/v1/mssql/roles
```

### Sample Response

```json
{
  "auth": null,
  "data": {
    "keys": ["dev", "prod"]
  },
  "lease_duration": 2764800,
  "lease_id": "",
  "renewable": false
}
```

## Delete Role

This endpoint deletes the role definition.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `DELETE` | `/mssql/roles/:name`         | `204 (empty body)`     |

### Parameters

- `name` `(string: <required>)` – Specifies the name of the role to delete. This
  is specified as part of the URL.

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    --request DELETE \
    https://vault.rocks/v1/mssql/roles/my-role
```

## Generate Credentials

This endpoint generates a new set of dynamic credentials based on the named
role.

| Method   | Path                         | Produces               |
| :------- | :--------------------------- | :--------------------- |
| `GET`    | `/mssql/creds/:name`         | `200 application/json` |

### Parameters

- `name` `(string: <required>)` – Specifies the name of the role to create
  credentials against. This is specified as part of the URL.

### Sample Request

```
$ curl \
    --header "X-Vault-Token: ..." \
    https://vault.rocks/v1/mssql/creds/my-role
```

### Sample Response

```json
{
  "data": {
    "username": "root-a147d529-e7d6-4a16-8930-4c3e72170b19",
    "password": "ee202d0d-e4fd-4410-8d14-2a78c5c8cb76"
  }
}
```