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tried this
_`await stack.SetConfigAsync("aws:assumeRole.roleArn", new ConfigValue("arn:aws:iam::xxxxxx:role/mcrTestPulumi"));`_

also tried passing in assumeRole setting
`var assumeRoleSettings = JsonSerializer.Serialize(new Dictionary&lt;string, object&gt;`
`{`
    `{`
        `"assumeRole",`
        `new[]`
        `{`
            `new Dictionary&lt;string, object?&gt;`
            `{`
                `{ "roleArn", "arn:aws:iam::xxxx:role/mcrTestPulumi" }`
            `},`
        `}`
    `},`
```});```

got this to work
`var assumeRoleSettings2 = JsonSerializer.Serialize(new Dictionary&lt;string, string&gt;`
`{`
  `{ "roleArn", "arn:aws:iam::504653139595:role/mcrTestPulumi" }`
`});`

`await stack.SetConfigAsync("aws:assumeRole", new ConfigValue(assumeRoleSettings2));`

I had some odd error messages regarding my config, that I wasn’t able to troubleshoot.  I had to delete my stack and then got things going with the above command.

I prefer to specify the assumed role via the aws provider args and then explicitly specify the aws provider everywhere; e.g.:
• <https://github.com/gitfool/Pulumi.Dungeon/blob/55d54512f18d28c9447a243cf71c25be6cffe2d6/Library/StackBase.cs#L22>
• <https://github.com/gitfool/Pulumi.Dungeon/blob/55d54512f18d28c9447a243cf71c25be6cffe2d6/Aws/VpcStack.cs#L32>

Can you use the AWS provider with Inline program?

piggybacking on what michael is doing, it seems when using an s3 backend, it doesn’t assume-role when accessing s3. is there a way to configure assume-role for the s3 backend?

&gt; Can you use the AWS provider with Inline program?
I would expect so as that's just another way to wire up the program body