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

# Connect Nmbrs with OAuth 2.0 – StackOne Hub

> Link a Nmbrs account in the StackOne Hub using OAuth 2.0. End-user guide to authorize the integration and start using Nmbrs actions.

<Warning>A Nmbrs developer account is required to subscribe to an API product. Sign up at [https://developer.nmbrs.com](https://developer.nmbrs.com) — signup is self-serve and free.</Warning>

<section data-guide-section data-guide-scopes="">
  <h2>Subscribe to a Nmbrs API product</h2>

  <p>Your Subscription Key authorises calls to the Nmbrs API gateway and is sent on every request as the `X-Subscription-Key` header. You obtain it by subscribing to a Nmbrs API product in the developer portal.</p>

  <Steps>
    <Step title="Sign in to Nmbrs">
      <div data-guide-step data-guide-scopes="" data-guide-display-scopes-list="">
        <p>Sign in to your <a href="https://developer.nmbrs.com" target="_blank" rel="noopener noreferrer">Nmbrs developer portal</a>.</p>

        <ul>
          <li>Open the <a href="https://developer.nmbrs.com/products" target="_blank" rel="noopener noreferrer">Products page</a> (or use the <strong>Products</strong> tab in the top navigation).</li>
        </ul>
      </div>
    </Step>

    <Step title="Subscribe to a product">
      <div data-guide-step data-guide-scopes="" data-guide-display-scopes-list="">
        <p>Select a product such as <strong>Developers/Starter</strong> and complete the subscription flow.</p>

        <ul>
          <li>If you already have a subscription, open it from the <strong>Profile</strong> menu → <strong>Subscriptions</strong>.</li>
        </ul>
      </div>
    </Step>

    <Step title="Copy the Primary key">
      <div data-guide-step data-guide-scopes="" data-guide-display-scopes-list="">
        <p>On the subscription page, copy the <strong>Primary key</strong> — this is your Subscription Key.</p>

        <ul>
          <li>The <strong>Secondary key</strong> is a rotation backup; you do not need it for setup.</li>
          <li>Store the key securely — it grants access to your Nmbrs API gateway quota.</li>
        </ul>
      </div>
    </Step>
  </Steps>
</section>

<div data-whitelabel-hide>
  <h2>Linking the Account from the Hub</h2>

  <Steps>
    <Step title="Navigate to the Hub">
      Use one of the three <a href="/guides/accounts-section#linking-accounts">Linking Account Methods</a> to access the Hub.
    </Step>

    <Step title="Fill out the fields">
      Fill out the following fields using details from your provider:

      <ul>
        <li><strong>Subscription Key</strong></li>
      </ul>
    </Step>

    <Step title="Connect">
      <ul>
        <li>Click <strong>Connect</strong></li>
        <li>If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider's authorization flow.</li>
        <li>Once authorization is successful, you will see a confirmation popup</li>
      </ul>
    </Step>
  </Steps>

  <p>If the account linking is successful, you will see the newly linked account in your <a href="/guides/accounts-section">Accounts</a> page.</p>
</div>