ToolJet/docs/versioned_docs/version-3.16.0-LTS/data-sources/grpc.md

---
id: grpc
title: gRPC
---

<div className='badge badge--primary heading-badge'>Self-hosted only</div>

:::caution
Only self-hosted deployments will have access to a gRPC data source that is capable of handling unary requests and responses.
:::

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## Setup

### Step 1: Upgrade ToolJet to the Version 2.5 or Above

Find instructions on how to do this in the setup guides located here: [ToolJet Setup](/docs/setup/).

### Step 2: Add Proto Files

At the root, create a directory named "*protos*" and add a "*service.proto*" file inside it.


### Step 3: Mount Volumes

In the **docker-compose.yml** add the following to the *volumes* sections for **plugins** and **server**

```bash
./protos:/app/protos
```

<img className="screenshot-full" src="/img/datasource-reference/grpc/proto1.png" alt="gRPC: datasource" width='500' />

<img className="screenshot-full" src="/img/datasource-reference/grpc/proto2.png" alt="gRPC: datasource"  width='500'/>

### Step 4: Reboot the Instance

```bash
docker-compose up -d
```

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## Querying gRPC

After setting up your proto files, you should be able to establish a connection to gRPC by going to the [global datasource](/docs/data-sources/overview) page.

### Connect the gRPC Datasource

ToolJet requires the following to connect to gRPC servers:

- **Server URL**
- **Authentication type** 
    - None
    - Basic
    - Bearer
    - API key

<div style={{textAlign: 'center'}}>

<img className="screenshot-full" src="/img/datasource-reference/grpc/connection.png" alt="gRPC: connection" />

</div>

Once you have added the gRPC from the global datasource page, you'll find it on the query panel of the application.

<div style={{textAlign: 'center'}}>

<img className="screenshot-full" src="/img/datasource-reference/grpc/grpcgds.png" alt="gRPC: connection" />

</div>

### Creating Query

You can now query a particular RPC method of the added services.

<div style={{textAlign: 'center'}}>

<img className="screenshot-full" src="/img/datasource-reference/grpc/query.png" alt="gRPC: connection" />

</div>

</div>