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

# Affinity (v1)

> Access the Affinity v1 API in 2 minutes 💨

<Tabs>
  <Tab title="🚀 Quickstart">
    <Steps>
      <Step title="Create an integration">
        In Nango ([free signup](https://app.nango.dev)), go to [Integrations](https://app.nango.dev/dev/integrations) -> *Configure New Integration* -> *Affinity (v1)*.
      </Step>

      <Step title="Authorize Affinity (v1)">
        Go to [Connections](https://app.nango.dev/dev/connections) -> *Add Test Connection* -> *Authorize*, then enter your Affinity API Key. Later, you'll let your users do the same directly from your app.
      </Step>

      <Step title="Call the Affinity (v1) API">
        Let's make your first request to the Affinity (v1) API (fetch current user information). Replace the placeholders below with your [secret key](https://app.nango.dev/dev/environment-settings), [integration ID](https://app.nango.dev/dev/integrations), and [connection ID](https://app.nango.dev/dev/connections):

        <Tabs>
          <Tab title="cURL">
            ```bash theme={null}
            curl "https://api.nango.dev/proxy/auth/whoami" \
              -H "Authorization: Bearer <NANGO-SECRET-KEY>" \
              -H "Provider-Config-Key: <INTEGRATION-ID>" \
              -H "Connection-Id: <CONNECTION-ID>"
            ```
          </Tab>

          <Tab title="Node">
            Install Nango's backend SDK with `npm i @nangohq/node`. Then run:

            ```typescript theme={null}
            import { Nango } from '@nangohq/node';

            const nango = new Nango({ secretKey: '<NANGO-SECRET-KEY>' });

            const res = await nango.get({
              endpoint: '/auth/whoami',
              providerConfigKey: '<INTEGRATION-ID>',
              connectionId: '<CONNECTION-ID>'
            });

            console.log(JSON.stringify(res.data, null, 2));
            ```
          </Tab>
        </Tabs>

        Or fetch credentials dynamically via the [Node SDK](/reference/sdks/node#get-a-connection-with-credentials) or [API](/reference/api/connection/get).
      </Step>
    </Steps>

    ✅ You're connected! Check the [Logs](https://app.nango.dev/dev/logs) tab in Nango to inspect requests.

    <Tip>
      Next step: [Embed the auth flow](/guides/primitives/auth) in your app to let your users connect their Affinity accounts.
    </Tip>
  </Tab>

  <Tab title="🔗 Useful links">
    | Topic         | Links                                                                                                            |
    | ------------- | ---------------------------------------------------------------------------------------------------------------- |
    | Authorization | [Guide to connect to Affinity (v1) using Connect UI](/integrations/all/affinity/connect)                         |
    | General       | [Affinity Website](https://www.affinity.co/)                                                                     |
    | Developer     | [How to generate an Affinity API Key](https://support.affinity.co/s/article/How-to-obtain-your-Affinity-API-key) |
    |               | [Affinity API v1 docs](https://api-docs.affinity.co/)                                                            |
    |               | [API Authentication](https://api-docs.affinity.co/#authentication)                                               |
    |               | [API Rate Limiting](https://api-docs.affinity.co/#rate-limits)                                                   |

    <Note>Contribute useful links by [editing this page](https://github.com/nangohq/nango/tree/master/docs-v2/integrations/all/affinity.mdx)</Note>
  </Tab>

  <Tab title="🚨 API gotchas">
    * The Affinity API is only for Premium and Enterprise tier customers, and for Professional tier customers *who signed up for Affinity before July 5, 2023*.
    * Currently, Affinity supports one key per user on your team.
    * There is a [limit](https://api-docs.affinity.co/#webhook-subscription-limit) of three webhook subscriptions per Affinity instance.
    * Currently, webhooks work only with API v1.

    <Note>Contribute API gotchas by [editing this page](https://github.com/nangohq/nango/tree/master/docs-v2/integrations/all/affinity.mdx)</Note>
  </Tab>
</Tabs>

<Info>
  Questions? Join us in the [Slack community](https://nango.dev/slack).
</Info>