Attach file to HTTP request body

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Posted on by Tzai

Hello,

I hope you are doing great.

Does anyone know how to attach a file in a http post request in Power Automate Desktop?

I'm trying to send a file to an API using a post request

In postman I can just add the file like this

But, not able to attach the file into the body with PAD, and I'm getting this error:

{"message":"Add file or url in request}

Thanks in advance

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Power Automate Desktop

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kinuasa 801 Most Valuable Professional on at

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Hi,
Instead of the 'Invoke web service' action, I suggest using a script or curl command, as in the following site.

rest - powershell invoke-restmethod multipart_form-data - Stack Overflow
https://stackoverflow.com/questions/36268925/powershell-invoke-restmethod-multipart-form-data

Regards,
kinuasa
Tzai 29 on at

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Hello Kinuasa,

Thanks a lot for the reply!

I tried this curl command

curl --request POST \
--url 'https://app.nanonets.com/api/v2/OCR/Model/{{model_id}}/LabelFile/' \
--header 'accept: multipart/form-data' \
-u '{{API_Key}}' \
-F 'file=@{{Image_Path}}'
And got this error:

Do you have an example done in PAD?

Best regards,
VJR 7,635 on at

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Here it uses Run DOS command

https://powerusers.microsoft.com/t5/Power-Automate-Desktop/Walkthrough-How-to-use-Invoke-Web-Service-with-multipart-form/m-p/991821/highlight/true#M4890
PAG 154 on at

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Hello @Tzai
Here is a working example: https://power.automate.gallery/send-file-attachments-to-jira-issues-using-curl
Tzai 29 on at

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Hello,

Thanks a lot for the reply.

I tried with the Run DOS command

Something like this
curl --request POST \
--url 'https://app.nanonets.com/api/v2/OCR/Model/{{model_id}}/LabelFile/' \
--header 'accept: multipart/form-data' \
-u 'REPLACE_API_KEY' \
-F 'file=@REPLACE_IMAGE_PATH.jpg'

And something like this

curl -D- -u %ApiKey% -X POST -F "file=@%file%" %Domain%

But, it gets stuck for hours, so, no luck so far.
Tzai 29 on at

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Hello,

Thanks a lot for the reply. I tried to replicate it.
And also Nanonets documentation have curl, but, didn´t work.
https://nanonets.com/documentation/#operation/OCRModelLabelFileByModelIdPost

I tried with the Run DOS command

Something like this
curl --request POST \
--url 'https://app.nanonets.com/api/v2/OCR/Model/{{model_id}}/LabelFile/' \
--header 'accept: multipart/form-data' \
-u 'REPLACE_API_KEY' \
-F 'file=@REPLACE_IMAGE_PATH.jpg'

And something like this

curl -D- -u %ApiKey% -X POST -F "file=@%file%" %Domain%

But, it gets stuck for hours, so, no luck so far.
Verified answer

Tzai 29 on at

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Sharing a workaround done by a team member who is brilliant.

He created this python script
And we call it in PAD

Adding the arguments like
"arg1" "arg2" "arg2"

And the working folder to store the JSON response.

And it´s working fine.
Community Power Pla... Microsoft Employee on at

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Hi, would you mind explaining more how you are passing the arguments?