Web service protocols: REST protocol (with JSON/XML payload support)

Maintained by Picture of Owen BarrittOwen Barritt
REST webservice protocol based on the standard core REST webservice, but with added support for JSON & XML payloads and supports using HTTP ACCEPTS headers for determining response format.
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REST webservice protocol based on the standard core REST webservice, but with added support for JSON & XML payloads and supports using HTTP ACCEPTS headers for determining response format.


Simply place the plugin files in ./webservice/restjson


Should be enabled and setup in the standard way for webservices.  See https://docs.moodle.org/29/en/Using_web_services for details.


The protocol can be called in the usual way for webservices with either JSON or XML data specified in content type (also backward compatible with current REST webservice so will also accept POST form data)

e.g. for a JSON payload

curl -H "Content-Type: application/json" -X POST -d '{"wsfunction":"...", "wstoken":"...",request object}' http://moodle.url/path/to/webservice/restjson/server.php

Parameters such as wsfunction and wstoken can also still be specified in the URL if required

curl -H "Content-Type: application/json" -X POST -d '{request object}' http://moodle.url/path/to/webservice/restjson/server.php?wsfunction=...&wstoken=...

Response format can also be set to XML or JSON by setting the accept HTTP header e.g. to send in JSON and receive in XML (by default same format is used to return as originally received) you could use:

curl -H "Content-Type: application/json" -H "Accept: application/xml"-X POST -d '{request object}' http://moodle.url/path/to/webservice/restjson/server.php?wsfunction=...&wstoken=...


Picture of Owen Barritt
Owen Barritt (Lead maintainer)
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  • Picture of Owen Barritt
    Fri, Feb 19, 2016, 2:07 AM
    The fact you're getting xml back rather than jsonormal suggests the web service isn't getting your content type header. Try putting the options before the url when you call curl as per the man page (not sure it recognises them afterwards which might be your problem)
  • Picture of Owen Barritt
    Fri, Feb 19, 2016, 2:08 AM
    Sorry on a mobile on a crowded and somewhat wobbly train. That should have read json not jsonormal.
  • Picture of Robert van Kints
    Fri, Feb 19, 2016, 6:03 PM
    Hey Owen, I did some debugging and found the issue what was going wrong with the HTTP_ACCEPT. I made a pull request on it on GitHub.
  • Picture of Owen Barritt
    Fri, Feb 19, 2016, 6:27 PM
    OK, I've merged that change and done a new release including this fix plus a fix for the permissions issues.
  • Picture of Natalie Peyton
    Thu, Apr 28, 2016, 10:49 PM
    Great plugin. Very handy for any web developer.
  • Picture of manikandan Selvaraj
    Wed, Mar 22, 2017, 6:19 PM
    Hi Owen,

    How can i format the json object to post, because call core_course_create_courses method for create course, my json structure was [{"fullname":"Bulk insert","shortname":"short bulk","categoryid":1}]
    But i got the error link {"exception":"invalid_parameter_exception","errorcode":"invalidparameter","message":"Invalid parameter value detected"}

    Could you please suggest what kind of structure i need to send course creation
  • Picture of manikandan Selvaraj
    Wed, Mar 22, 2017, 6:45 PM
    Hi Ownen,

    I tried this json structure too but no luck {"Courses":[{"fullname":"Bulk insert","shortname":"short bulk","categoryid":1}]}
  • Picture of Albert Leatherman
    Tue, Apr 18, 2017, 8:46 AM
    Hi Owen, any chance of getting a quick example video for those of us aspiring to use server calls with Moodle but not yet quite up to speed on how they're done?
  • Picture of Mohammad Eftekhari
    Mon, Jul 17, 2017, 4:37 PM
    ( For those who don't know how to send the request via Command Line, like me some minutes ago. )

    Because the request format is ambiguous. I couldn't understand how to send the "request Object". so I tried this and it worked :

    curl -k -X POST -d "id=63&filename=windiff.zip" "https://localhost/moodle/webservice/rest/server.php?wsfunction=local_wstemplate_hello_world&wstoken=f5b0854a870e05f960cff39fc2a40665"

    hope it helps
  • Picture of Emil Wilmański
    Mon, Oct 23, 2017, 7:57 AM
    Hello Owen,
    I try to use Moodle webservice within google apps, so json could be great to use, but I cant get that plugin to work.
    Generally Moodle is not easy platform for anybody. So,
    * my Moodle version is 3.1
    * permission webservice/rest:use -> allow (standard REST works)
    * token is valid (standard REST works)
    * plugin webservice_restjson is enabled (0.4 for Moodle 2.9+ 2016021900)
    * protocol REST protocol (with JSON/XML input support) -> enabled
    curl -H "Content-Type: application/json" -X GET http://elearning.casadelalengua.pl/webservice/restjson/server.php?wsfunction=core_course_get_courses&wstoken=33ff697d305xyz
    I've got
    {"exception":"webservice_access_exception","errorcode":"accessexception","message":"Wyj\u0105tek w kontroli dost\u0119pu"}
    so I don't know what still I have wrong.

    Can you help me with this problem?
  • Picture of Chandni Pandya
    Thu, Jul 19, 2018, 6:10 PM
    This can be so helpful to web developer
  • Picture of Vivek Singh
    Wed, Oct 3, 2018, 7:10 PM
    Excellent plugin and very helpful for any magento developer.
  • Picture of Hodaya Ankri
    Thu, Aug 29, 2019, 3:47 PM
    Thanks for this useful plugin!!! It helps me a lot!!!
  • Picture of mango itsolutions
    Wed, Mar 18, 2020, 3:40 PM
    Hey Owen,
    I've used your plugin and found it is very well performing and any web developer can use it very easily
  • Picture of marc mathys
    Sun, Mar 29, 2020, 9:25 AM
    Hi. Can this be used by a device to send/receive JSON data (files) and store it in moodle for later access by the device or user?
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