SharePoint site creation with graph api

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Posted on by Antidote

Hello

i am traing to create sharepoint site on power automate with the http action using an azure app registration, i tried with graph api but it is not working i think that the uri and the bidy are not correct

i gives all the required permissions for my app registration but still not working

can anyone help me on this ? i need the uri, headers, body

i tried with the atcion : send http request to sharepoint and it is working but i want it with an app registration

thank you

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11manish 2,983 on at

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While Microsoft Graph is useful for many SharePoint operations, the SharePoint Admin API (_api/SPSiteManager/create) is generally the preferred and more

consistent approach for automated site provisioning using an Azure App Registration.

If you can share the exact URI, headers, request body, and the full error message, it will be much easier to identify the specific issue.

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Valantis 6,456 on at

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Hi @CU28121625-0,

Here's the exact setup for creating a SharePoint site via Graph API with an app registration.

HTTP Action configuration:
- Method: POST
- URI: https://graph.microsoft.com/v1.0/sites/root/sites
- Headers:
Content-Type: application/json
- Authentication: Active Directory OAuth
- Authority: https://login.microsoftonline.com
- Tenant: your-tenant-id
- Audience: https://graph.microsoft.com
- Client ID: your app registration client ID
- Secret: your client secret

Body:
{
"displayName": "My New Site",
"name": "mynewsite",
"webTemplate": "STS#3"
}

Required Graph permissions on the app registration: Sites.Manage.All (Application permission) this requires admin consent.

If that endpoint doesn't work, the SharePoint Admin API approach is more reliable:

- URI: https://yourtenant-admin.sharepoint.com/_api/SPSiteManager/create
- Same auth setup but Audience: https://yourtenant-admin.sharepoint.com
- Required permission: Sites.FullControl.All

Share the exact error message if it still fails and we can narrow it down.

Best regards,

Valantis

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Vish WR 3,610 on at

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when u use graph api what error are u getting ?

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Antidote 4 on at

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@Valantis i tried both of your ideas,

first one with graph : Invalid request

the second one with admin sharepoint i got : Unsupported app only token.

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Valantis 6,456 on at

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Hi @Antidote,

Creating a SharePoint site via Graph is only available in the beta API, not v1.0. That's why you're getting "Invalid request" with v1.0.

Correct endpoint:
POST https://graph.microsoft.com/beta/sites

Body:
{
"name": "commsite1",
"webUrl": "https://yourtenant.sharepoint.com/sites/commsite1",
"locale": "en-US",
"template": "SitePage#0"
}

This is in beta, which means it may change and Microsoft doesn't guarantee stability for production use. Required permission: Sites.Manage.All as Application permission with admin consent.

For the SharePoint Admin API "Unsupported app only token" issue: this is confirmed, the SharePoint _api endpoints reject client secret based app-only tokens and require a certificate on the app registration.

So either use the Graph beta endpoint above with your client secret, or add a certificate to your Entra app registration and use that for the SharePoint Admin API approach.

The Graph beta route is simpler if you just need to get this working without a certificate.

Best regards,

Valantis

✅ If this helped solve your issue, please Accept as Solution so others can find it quickly.

❤️ If it didn’t fully solve it but was still useful, please click “Yes” on “Was this reply helpful?” or leave a Like :).

🏷️ For follow-ups @Valantis.

📝 https://valantisond365.com/

💼 LinkedIn

▶️ YouTube

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