XML deposit using HTTPS POST

XML files can be POSTed to our system where they are added to the submission queue to await processing. You can do this yourself or make use of our java program.

On this page, find out more about:

Submitting files - an overview

Uploading files (for deposit or for bulk queries) are submitted using HTTPS POST with the encType: multipart/form-data. The URL for all submissions is You may also POST submissions to our test system using Learn more about our test system.

The following parameters are supported:

Form field Description Possible values Mandatory? Default
operation Depends on submission type doMDUpload: For metadata (XSD) submissions doDOICitUpload: For DOI citations or resources submissions doQueryUpload: For query submissions doDOIQueryUpload: For DOI-to-metadata query submissions No doMDUpload
subType subtype for metadata submissions cm: for conflict management submissions No Not applicable
login_id Crossref account credentials username If using shared role credentials, add the role. If using personal user credentials, add your email address and the role in this format Yes Not applicable
login_passwd Crossref account credentials password Not applicable Yes Not applicable
Content parts
fname Submission contents Not applicable Yes Not applicable

Sample transactions

Sample transaction using curl

curl -F 'operation=doQueryUpload' -F 'login_id=USERNAME' -F 'login_passwd=PASSWORD' -F 'fname=@FILENAME' https://

Sample https transaction

POST https://doi-crossref-org/servlet/deposit?operation=doMDUpload&login_id=USER&login_passwd=PSWD HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*
Accept-Language: en-us
Content-Type: multipart/form-data; boundary=---------------------------7d22911b10028e
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461)
Host: Myhost
Content-length: 1304 Pragma: no-cache -----------------------------7d22911b10028e
Content-Disposition: form-data; name="fname"; filename="crossref_query.xml"
<?xml version="1.0" encoding="UTF-8"?>
<doi_batch version="4.3.0" xmlns="" xmlns:xsi="" xsi:schemaLocation="">

For backward compatibility, the Crossref system also accepts the login_id, login_passwd, operation, and area parameters in a multi-part request:

Content-Disposition: form-data; name="login_id"
Content-Disposition: form-data; name="login_passwd"
Content-Disposition: form-data; name="fname"; filename="hisham.xml"

... file contents ...

Submission limits

We have a limit of 10,000 pending submissions per user. If there are 10,000 submissions in our queue for a given user, subsequent uploads will fail with a 429 error. You may resume POSTing when pending submissions are below 10,000.

Page owner: Isaac Farley   |   Last updated 2020-April-08