topic User data function as target for webhook from ADO in Data Engineering

User data function as target for webhook from ADO

Mauro89 — Fri, 17 Oct 2025 15:50:08 GMT

Hi there,

Iam playing arround if I can use UDF as target for webhooks. Therefore I wanted to use the service hook from Azure DevOps to send ADO events to my UDF.

I have created a service connection in ADO and put it as contributor/admin in my Fabric workspace. I also see that the app registration has execute rights within my UDF.

But when I test the webhook I get an 403 error. This documentation says the message is to large, which can not be the case as I shortened it up to only few lines. So I doubt this is the issue.

Would be great to get some hints from the community 🙂

Thanks!

Re: User data function as target for webhook from ADO

KevinChant — Sat, 18 Oct 2025 08:44:45 GMT

I would check that the service connection is trying to authenticate with the right tenant first. Have you tested it with something like Postman?

Re: User data function as target for webhook from ADO

Mauro89 — Sun, 19 Oct 2025 16:14:09 GMT

Hi @KevinChant,

thanks for this nice hint with Postman. I had a try but also here I got the 403.

Any other ideas? Maybe some tenant or admin setting which I might have missed?

Best regards!

Re: User data function as target for webhook from ADO

v-karpurapud — Tue, 21 Oct 2025 10:44:58 GMT

Hi @Mauro89

Thank you for contacting the Microsoft Fabric Community Forum.

In Microsoft Fabric, User-Defined Functions (UDFs) operate in a secure, sandboxed environment and are intended solely for internal data processing. As such, UDFs cannot initiate or receive HTTP requests or webhooks; they only work with internal data types such as str, dict, or FabricLakehouseClient. This approach ensures the security and reliability of in-platform data transformations.

To connect with external systems, it is advisable to use a Fabric Pipeline or Spark Notebook. Pipelines can leverage Web Activities to interact with webhooks and store responses in a Lakehouse or Delta Table, allowing UDFs to process the resulting data. Alternatively, Notebooks can utilize Python’s requests library to retrieve external data and write it into Fabric storage for subsequent UDF processing.

For real-time integrations, Azure Functions or Logic Apps are recommended to manage webhook events and transfer data to OneLake or Blob Storage, where it can be ingested and processed within Fabric by UDFs or Notebooks. This architecture supports a secure, scalable environment and aligns with Microsoft’s best practices for Fabric deployments.

I hope this information is helpful. . If you have any further questions, please let us know. we can assist you further.

Regards,

Microsoft Fabric Community Support Team.

Re: User data function as target for webhook from ADO

v-karpurapud — Sat, 25 Oct 2025 11:00:13 GMT

Hi @Mauro89

I wanted to check if you’ve had a chance to review the information provided. If you have any further questions, please let us know. Has your issue been resolved? If not, please share more details so we can assist you further.

Thank You.

Re: User data function as target for webhook from ADO

Mauro89 — Wed, 29 Oct 2025 09:59:44 GMT

Hi @v-karpurapud,

thanks for your response and letting me know that currently there is no option in Fabric to receive webhooks.
I also want to note that your proposal with notebooks and especially the webhook activity does NOT work, as the webhook activities is not supposed to receive rather than acting like a webhook for sending events.
So for now the only way is via Azur functions.

Thanks and best regards!

Re: User data function as target for webhook from ADO

v-karpurapud — Thu, 30 Oct 2025 04:20:31 GMT

Hi @Mauro89

Thank You for the update.