info_tfgrid/collections/documentation/developers/javascript/grid3_javascript_loadclient.md

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<h1> Grid3 Client</h1>
<h2>Table of Contents</h2>
- [Introduction](#introduction)
- [Client Configurations](#client-configurations)
- [Creating/Initializing The Grid3 Client](#creatinginitializing-the-grid3-client)
- [What is `rmb-rs` | Reliable Message Bus --rust](#what-is-rmb-rs--reliable-message-bus---rust)
- [Grid3 Client Options](#grid3-client-options)
## Introduction
Grid3 Client is a client used for deploying workloads (VMs, ZDBs, k8s, etc.) on the TFGrid.
## Client Configurations
so you have to set up your configuration file to be like this:
```json
{
"network": "dev",
"mnemonic": "<Your mnemonic>",
"storeSecret": "secret",
"ssh_key": ""
}
```
## Creating/Initializing The Grid3 Client
```ts
async function getClient(): Promise<GridClient> {
const gridClient = new GridClient({
network: "dev", // can be dev, qa, test, main, or custom
mnemonic: "<add your mnemonic here>",
});
await gridClient.connect();
return gridClient;
}
```
The grid client uses `rmb-rs` tool to send requests to/from nodes.
## What is `rmb-rs` | Reliable Message Bus --rust
Reliable message bus is a secure communication panel that allows bots to communicate together in a chat like way. It makes it very easy to host a service or a set of functions to be used by anyone, even if your service is running behind NAT.
Out of the box RMB provides the following:
- Guarantee authenticity of the messages. You are always sure that the received message is from whoever is pretending to be
- End to End encryption
- Support for 3rd party hosted relays. Anyone can host a relay and people can use it safely since there is no way messages can be inspected while
using e2e. That's similar to home servers by matrix
## Grid3 Client Options
- network: `dev` for devnet, `test` for testnet
- mnemonics: used for signing the requests.
- storeSecret: used to encrypt data while storing in backend. It's any word that will be used for encrypting/decrypting the keys on threefold key-value store. If left empty, the Grid client will use the mnemonics as the storeSecret.
- BackendStorage : can be `auto` which willl automatically adapt if running in node environment to use `filesystem backend` or the browser enviornment to use `localstorage backend`. Also you can set it to `kvstore` to use the tfchain keyvalue store module.
- keypairType: is defaulted to `sr25519`, most likely you will never need to change it. `ed25519` is supported too.
for more details, check [client options](https://github.com/threefoldtech/tfgrid-sdk-ts/blob/development/packages/grid_client/docs/client_configuration.md)
> Note: The choice of the node is completely up to the user at this point. They need to do the capacity planning. Check [Node Finder](../../dashboard/deploy/node_finder.md) to know which nodes fits your deployment criteria.
Check the document for [capacity planning using code](../javascript/grid3_javascript_capacity_planning.md) if you want to automate it
> Note: this feature is still experimental