> ## Documentation Index
> Fetch the complete documentation index at: https://docs.auth.near.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Testnet contracts

> Deployed NEAR Auth contract addresses, network config, and credentials for NEAR testnet.

The addresses below are the live NEAR Auth deployment on **NEAR testnet**. Use them for development and integration testing — testnet needs no approval, and you can point your SDK at these contracts today with the shared credentials on this page.

<Note>
  Testnet requires no sign-off. When you're ready to go live, review the [mainnet contracts](/resources/mainnet) and [apply for production access](/home/apply).
</Note>

***

## Contract addresses

| Contract         | Account id                    | Description                                                                           | Explorer                                                                  |
| ---------------- | ----------------------------- | ------------------------------------------------------------------------------------- | ------------------------------------------------------------------------- |
| NEAR Auth        | `fast-auth.testnet`           | Entry-point contract that routes verification and requests MPC signatures.            | [View](https://testnet.nearblocks.io/address/fast-auth.testnet)           |
| JWT Guard Router | `jwt.fast-auth.testnet`       | Registry mapping each guard name to its guard contract.                               | [View](https://testnet.nearblocks.io/address/jwt.fast-auth.testnet)       |
| Auth0 Guard      | `auth0.jwt.fast-auth.testnet` | Guard that RS256-verifies Auth0 JWTs and their claims on-chain.                       | [View](https://testnet.nearblocks.io/address/auth0.jwt.fast-auth.testnet) |
| MPC              | `v1.signer-prod.testnet`      | Multi-Party Computation network that produces signatures from distributed key shares. | [View](https://testnet.nearblocks.io/address/v1.signer-prod.testnet)      |

<Tip>
  In the SDKs, `fast-auth.testnet` is the `fastAuthContractId` and `v1.signer-prod.testnet` is the `mpcContractId`. To learn what each contract does, see the [contracts overview](/protocol/contracts/overview).
</Tip>

***

## Network information

| Setting      | Value                                                  |
| ------------ | ------------------------------------------------------ |
| Network      | NEAR Testnet                                           |
| Chain id     | `testnet`                                              |
| RPC endpoint | `https://rpc.testnet.near.org`                         |
| Explorer     | [testnet.nearblocks.io](https://testnet.nearblocks.io) |

```ts theme={"theme":{"light":"github-light","dark":"github-dark"}}
import { connect } from "near-api-js";

const { connection } = await connect({
  networkId: "testnet",
  nodeUrl: "https://rpc.testnet.near.org",
});
```

***

## Auth0 credentials

Testnet ships with a shared Auth0 client so you can start authenticating users without registering your own tenant. The JavaScript provider fills in the domain and signing audience from the `testnet` network, so `clientId` is the only value you need to supply.

| Setting          | Value                              |
| ---------------- | ---------------------------------- |
| clientId         | `np8paqIpMWmNbzT4xAvOOapZBjsOpptl` |
| domain           | `login.testnet.fast-auth.com`      |
| signing audience | `auth0.jwt.fast-auth.testnet`      |

```ts theme={"theme":{"light":"github-light","dark":"github-dark"}}
import { JavascriptProvider } from "@fast-auth-near/javascript-provider";

const provider = new JavascriptProvider({
  network: "testnet",
  clientId: "np8paqIpMWmNbzT4xAvOOapZBjsOpptl",
});
```

<Info>
  This `clientId` is shared across testnet apps and is intended for development only. Provision your own Auth0 credentials before moving to [mainnet](/resources/mainnet).
</Info>

***

## Wire it up

The full browser client config for testnet combines the contract addresses and the Auth0 provider above.

```ts main.ts theme={"theme":{"light":"github-light","dark":"github-dark"}}
import { FastAuthClient } from "@fast-auth-near/browser-sdk";
import { JavascriptProvider } from "@fast-auth-near/javascript-provider";
import { connect } from "near-api-js";

const provider = new JavascriptProvider({
  network: "testnet",
  clientId: "np8paqIpMWmNbzT4xAvOOapZBjsOpptl",
});

const { connection } = await connect({
  networkId: "testnet",
  nodeUrl: "https://rpc.testnet.near.org",
});

const client = new FastAuthClient(provider, connection, {
  fastAuthContractId: "fast-auth.testnet",
  mpcContractId: "v1.signer-prod.testnet",
});

await client.login();
const signer = await client.getSigner();
```

***

## Related

<CardGroup cols={2}>
  <Card title="Mainnet contracts" icon="server" href="/resources/mainnet" horizontal arrow>
    Production addresses and credentials for NEAR mainnet.
  </Card>

  <Card title="Networks" icon="globe" href="/resources/networks" horizontal arrow>
    Compare testnet and mainnet configuration side by side.
  </Card>

  <Card title="Quickstart" icon="rocket" href="/home/quickstart" horizontal arrow>
    Log in and sign your first transaction on testnet.
  </Card>
</CardGroup>