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Merops connects to Azure Blob Storage using a storage connection string, a storage account name and key, or a Microsoft Entra service principal. The service principal format uses the account name, tenant ID, client ID, and client secret.

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Choose and prepare a credential

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Storage account connection string or key

  1. In the Azure portal, open the Storage Account that contains the containers Merops should access.
  2. Under Security + networking, open Access keys. You need permission to list the account keys.
  3. Use Show keys to copy either the full connection string or the account key. The connection string includes the account name and key.
  4. Create a local plain-text file such as azure-credentials.txt in one of these formats:
Or use the account name and key:

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Microsoft Entra service principal

If you use a service principal, register an application in Microsoft Entra ID and create a client secret. Assign it the Storage Blob Data Contributor role on the storage account (or a narrower supported scope) so it can manage blob data, including listing containers. Create a local text file with the service principal values:

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Import the credentials in Merops

  1. In Merops, open Providers and choose Add provider.
  2. Select Azure, import the text file, and enter a display name if requested.
  3. Open the new connection and check that its Blob Storage containers load.
Credential upload accepts a non-empty file up to 10 MiB. A successful import confirms that Merops parsed the file; it does not prove that the identity can perform every operation. Check permissions guidance. For the current portal steps, see Microsoft’s guides to viewing storage account keys and connection strings, registering an Entra application and creating a service principal, and authorizing access to blob data with Entra ID.