builds
Mint signed URLs for uploading a build context tarball
Returns a pair of short-lived signed URLs targeting a per-org staging location. Tar+gzip your build-context directory, PUT it to uploadUrl with Content-Type: application/gzip, then pass downloadUrl as contextDownloadUrl on POST /v1/builds.
Unlike /v1/vms/{id}/files/presign, this endpoint isn't keyed to a specific VM — context uploads happen before the build VM exists.
post/v1/build-contexts/presign
Response
Signed URLs + upload size ceiling