Power Platform Community Forum Thread Details

Hi,

I am working on a Power Apps Custom Connector (planning to publish it as a certified connector) using Generic OAuth 2.0 authentication.

My backend is based on IdentityServer (OAuth2) and supports a multi-tenant architecture (database per tenant).

All clients will use the same connector.

Architecture

Each client has a unique identifier (e.g., tenantId / clientId), which is required before authentication to:

Resolve the correct tenant
Select the appropriate database
Route to the correct identity provider (SAML / federated login)

Requirement
I would like to allow users to input a Tenant ID during connection creation, and pass it into the OAuth authorization request.

For example:
/connect/authorize?tenantId={tenantId}

Problem
It appears that:

The Authorization URL is treated as static
Connection parameters are not injected into the OAuth authorization request
Only standard OAuth parameters are sent:
- client_id
- scope
- redirect_uri
- state

Question
Is there any supported way in Power Platform connectors to:

Pass dynamic user-provided values (connection parameters) into the OAuth /authorize request? (Or)
influence parameter values dynamically?

Categories:

Connector development

Hello JK-21051247-0,

No, not with the standard Generic OAuth 2.0 authentication model in Power Platform custom connectors.
The OAuth configuration for a custom connector treats the authorization endpoint as essentially static. During the OAuth authorization code flow, Power Platform generates the /authorize request and only includes the supported OAuth parameters (such as client_id, redirect_uri, scope, response_type, state, etc.). User-defined connection parameters are not injected into the authorization request.

You would like something like:

https://identity.example.com/connect/authorize
    ?tenantId=<user-entered-value>
    &client_id=...
    &scope=...
However, Power Platform does not provide a supported mechanism to: