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

# FIX Onboarding

> Set Up a Paxos Account, configure connection then certify.

Set up and test a FIX connection in both the Sandbox and Production environments.
Connect to the Sandbox environment first for testing purposes.
Once the connection is working in Sandbox, follow a similar procedure for the Production connection.

<Tip>
  Learn more about [FIX Best Practices](/guides/crypto-brokerage/fix/best-practices), including how to use multiple connections and managing sequence number resets.
</Tip>

## 1. Set Up Paxos Account

To gain access, create a Paxos Account and Support will guide you through the process.

<Tabs>
  <Tab title="Sandbox">
    Go to [https://dashboard.sandbox.paxos.com](https://dashboard.sandbox.paxos.com) and create an **Institution** Account in the Sandbox environment.

    Use an active email address when signing up: Paxos will send a verification email to the address on file.
    Once the email is verified, complete the registration process.

    <Warning>
      When creating the Sandbox Account:

      * Do not submit documents.
      * Use placeholder (dummy) text for all text fields **except** for the email address.
    </Warning>
  </Tab>

  <Tab title="Production">
    Contact [support@paxos.com](mailto:support@paxos.com) before creating a Production Account.
  </Tab>
</Tabs>

## 2. Generate a Certificate Signing Request (CSR)

<FixCSR />

## 3. Set Up SSL

<FixSSL />

Once complete, [test](/guides/crypto-brokerage/fix/certify) your connection to our servers.

Contact [support@paxos.com](mailto:support@paxos.com) with test results or for help with an alternative to [stunnel](https://www.stunnel.org/).

## Next Steps

* Refer to this KB Article for troubleshooting issues with the FIX Connection configuration - [Troubleshooting FIX mTLS connectivity configuration](https://support.paxos.com/hc/en-us/articles/30477189764500).

* Test the FIX implementation in the Sandbox environment by running through the [certification process](/guides/crypto-brokerage/fix/certify).

* Review the [FIX best practices](/guides/crypto-brokerage/fix/best-practices).

* Read the [FIX reference documentation](/guides/crypto-brokerage/fix/reference).