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Upload attachment to bitbucket server with REST API



For some time Im trying to find out how to upload an image to Project/Repo/Pull Request using REST API from bitbucket server. The docs Im using is:

Im starting to lose hope and think its impossible cuz I cant find it.
I have a pretty working mobile app for bitbucket now but Im stuck on creating a comment with an Image/Video/any sort of attachment.

So tell me dear community, is it possible? And if so, how? :D


1 answer

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Answer accepted
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
Apr 23, 2020

Hi @Pastajello ,


The attachment REST API became publically available in version 7.0:


All the best,


Hi Kristy and thanks for the answer!

So it seems that its impossible for any older versions of bb server to save attachment by REST, thats somewhat a sad news.

But nevertheless I checked the doc You provided and see that it still lacks the POST in this endpoint. That way I still cant add a screenshot(or anything really) to PR comment.

Cant do a lot with DELETE and GET ;\


its endpoints. 

[Sorry, didnt see doubled message]


From my tweaking it seems that attachments endpoint is available also available on the BB Server in 6.10 version. But I dont see it in documentation.

It DOES have a POST but I cant figure out the way that my request should be formed for it to accept my file.

When I send POST on :



I get

<body>    <h1>HTTP Status 415 – Unsupported Media Type</h1>    <hr class="line" />    <p><b>Type</b> Status Report</p>    <p><b>Description</b> The origin server is refusing to service the request because the payload is in a format not        supported by this method on the target resource.</p>    <hr class="line" /></body>

but when I use GET it says that the method is not supported indicating that SOMETHING is out there :|


Could You please help me find out how to make a successful POST to this hidden endpoint? :D

Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
Apr 26, 2020

Hi @Pastajello

It is available but not documented because it is private API. This means that Bitbucket Server makes no guarantees about it - it might change in future releases of Bitbucket Server without warning.

If you are making a plugin or something that is expected to be reliable, then you should not be using private API.


That said, the problem you're seeing might be because you're using a POST instead of a PUT?

The best way to discover this what the endpoint needs would be to inspect the the network traffic from your browser. Most browser devtools have a 'copy as curl' option which you can use.


All the best,



I have the same issue - when using POST <baseUrl>/projects/<projName>/repos/<repoSlug>/attachments, I receive error 405 method not allowed. I inpected the network tab and for uploading files the same POST endpoint is used.

I see the initial question i 2 years old.. is there a solution yet?


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