Is it possible to have a link to raw content of file in Azure DevOps

Even after reading the existing answers, I still struggled with this a bit, so I wanted to leave a bit more of a thorough response.

As others have said, the pattern is (query split onto separate lines for ease of reading):

https://dev.azure.com/{{organization}}/{{project}}/_apis/sourceProviders/{{providerName}}/filecontents  ?repository={{repository}}  &path={{path}}  &commitOrBranch={{commitOrBranch}}  &api-version=5.0-preview.1

But how do you find the values for these variables? If you go into your Azure DevOps, choose Repos > Files from the left navigation, and select a particular file, your current url should look something like this:

https://dev.azure.com/{{organization}}/{{project}}/_git/{{repository}}?path=%2Fpackage.json

You should use those values for organization, project, and repository. For path, you'll see an HTTP encoded version of the unix file path. %2F is the HTTP encoding for /, so that path is actually just /package.json (a tool like Postman will do that encoding for you).

Commit or branch is pretty self explanatory; you either know what you want for this value or you should use master. I have "hard-coded" the api version in the above url because that's what the documentation currently points to.

For the last variable, you need providerName. In short, you should probably use TfsGit. I got this value from looking through the list of source providers and looking for one with a value of true for supportedCapabilities.queryFileContents.

However, if you just request this URL you'll get a "203 Non-Authoritative Information" response back because you still need to authenticate yourself. Referring again to the same documentation, it says to use Basic auth with any value for the username and a personal access token for the password. You can create a personal access token at https://dev.azure.com/{{organization}}/_usersSettings/tokens; ensure that it has the Token Administration - Read & Manage permission.

If you're unfamiliar with this sort of thing, again Postman is super helpful with getting these requests working before you get into the code.

So if you have a repository with a src directory at the root, and you're trying to get the file contents of src/package.json, your URL should look something like:

https://dev.azure.com/{{organization}}/{{project}}/_apis/sourceProviders/TfsGit/filecontents?repository={{repository}}&commitOrBranch=master&api-version={{api-version}}&path=src%2Fpackage.json

And don't forget the basic auth!

Sure, here's the rests call needed:

GET https://feeds.dev.azure.com/{organization}/_apis/packaging/Feeds/{feedId}/packages/{packageId}?includeAllVersions={includeAllVersions}&includeUrls={includeUrls}&isListed={isListed}&isRelease={isRelease}&includeDeleted={includeDeleted}&includeDescription={includeDescription}&api-version=5.0-preview.1

https://docs.microsoft.com/en-us/rest/api/azure/devops/artifacts/artifact%20%20details/get%20package?view=azure-devops-rest-5.0#package

I was able to get the raw contents of a file using this URL.

GET https://dev.azure.com/{organization}/{project}/_apis/sourceProviders/{providerName}/filecontents?serviceEndpointId={serviceEndpointId}&repository={repository}&commitOrBranch={commitOrBranch}&path={path}&api-version=5.0-preview.1

I got this from here.

https://docs.microsoft.com/en-us/rest/api/azure/devops/build/source%20providers/get%20file%20contents?view=azure-devops-rest-5.0