> ## 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 Basecamp with OAuth 2.0 – StackOne Hub

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

<section data-guide-section data-guide-scopes="">
  <h2>Getting Your Account ID</h2>

  <p>Your Account ID identifies your specific Basecamp organization and is required for API requests.</p>

  <Steps>
    <Step title="Find Account ID from Browser URL">
      <div data-guide-step data-guide-scopes="" data-guide-display-scopes-list="">
        <p>Your Account ID is visible in the browser address bar when logged into Basecamp.</p>

        <ul>
          <li>Sign in to [https://3.basecamp.com](https://3.basecamp.com)</li>
          <li>Look at the URL in your browser's address bar</li>
          <li>The Account ID is the number immediately after the domain</li>
          <li>Format: [https://3.basecamp.com/\&#123;ACCOUNT\_ID\&#125;/](https://3.basecamp.com/\&#123;ACCOUNT_ID\&#125;/)...</li>
          <li>Example: In [https://3.basecamp.com/1234567/projects](https://3.basecamp.com/1234567/projects), the Account ID is 1234567</li>
          <li>This number appears in all Basecamp URLs (projects, to-dos, messages, etc.)</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>Account ID</strong> (Optional)</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>