# IRPCLogin.IsServerRunningInEvaluationMode

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Vault API](https://developer.m-files.com/APIs/gRPC-API/vault/index.md) > [Login and sessions](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCLogin/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCLogin/IsServerRunningInEvaluationMode/

Badges: `Vault API / core` `session` `session` `idempotent`

Tells whether the server runs on an evaluation license, and how many evaluation days are left.

- **Service:** [Login and sessions](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCLogin/index.md) `MFiles.IRPCLogin`
- **gRPC method:** `/MFiles.IRPCLogin/IsServerRunningInEvaluationMode`
- **HTTP (mf-http-grpc):** `POST /grpc/v1/is-server-running-in-evaluation-mode`
- **Request:** [`IsServerRunningInEvaluationModeRequest`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCLogin/IsServerRunningInEvaluationMode/index.md#request)
- **Response:** [`IsServerRunningInEvaluationModeResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCLogin/IsServerRunningInEvaluationMode/index.md#response)
- **Book and level:** Vault API, core
- **Kind:** session
- **Session:** Required: the session ID from LogIn in the mfiles-session-id-bin metadata.
- **Idempotent:** yes
- **Returns metadata structure version:** no
- **Streaming:** none (unary)

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## Remarks

Used by M-Files clients to show license warnings; applications rarely need it.

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## Request: IsServerRunningInEvaluationModeRequest

No fields.

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## Response: IsServerRunningInEvaluationModeResponse

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `evaluation_mode` | `bool` | True if the server runs on an evaluation license. |
| `evaluation_days_left` | `uint32` | Days left in the evaluation. Meaningful only when `evaluation_mode` is true. |