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Overview

This page provides an overview of the MediaWiki Action API. This page is intended for technical contributors and software developers who wish to understand and use the MediaWiki Action API.

Quick Start

Endpoint

All Wikimedia wikis have endpoints that follow this pattern: https://www.example.org/w/api.php

Examples of Wikimedia Wiki Endpoints
API Endpoint Wiki
https://www.mediawiki.org/w/api.php MediaWiki API
https://meta.wikimedia.org/w/api.php Meta-Wiki API
https://en.wikipedia.org/w/api.php English Wikipedia API
https://nl.wikipedia.org/w/api.php Dutch Wikipedia API
https://commons.wikimedia.org/w/api.php Wikimedia Commons API
https://test.wikipedia.org/w/api.php Test Wiki API

Introduction

The MediaWiki Action API is a web service that allows access to some wiki-features like authentication, page operations, and search. It can provide meta information about the wiki and the logged-in user.

Uses for the MediaWiki Action API

  • Monitor a MediaWiki installation
  • Create a bot to maintain a MediaWiki installation
  • Log into a wiki, access data, and post changes by making HTTP requests to the web service

Getting started with MediaWiki Action API

Before you start using the MediaWiki Action API, you should review the following pages:

These terms apply to you when you access or edit using the API, just as they do when you use your web browser.

API documentation


Main module

Status: The MediaWiki API is a mature and stable interface that is actively supported and improved. While we try to avoid it, we may occasionally need to make breaking changes; subscribe to the mediawiki-api-announce mailing list for notice of updates.

Erroneous requests: When erroneous requests are sent to the API, an HTTP header will be sent with the key "MediaWiki-API-Error" and then both the value of the header and the error code sent back will be set to the same value. For more information see API: Errors and warnings.

Parameters:
action

Which action to perform.

abusefiltercheckmatch
Check to see if an AbuseFilter matches a set of variables, an edit, or a logged AbuseFilter event.
abusefilterchecksyntax
Check syntax of an AbuseFilter filter.
abusefilterevalexpression
Evaluates an AbuseFilter expression.
abusefilterunblockautopromote
Unblocks a user from receiving autopromotions due to an abusefilter consequence.
abuselogprivatedetails
View private details of an AbuseLog entry.
aggregategroups
Manage aggregate message groups.
antispoof
Check a username against AntiSpoof's normalisation checks.
block
Block a user.
centralauthtoken
Fetch a centralauthtoken for making an authenticated request to an attached wiki.
centralnoticecdncacheupdatebanner
Request the purge of banner content stored in the CDN (front-end) cache for anonymous users, for the requested banner and language
centralnoticechoicedata
Get data needed to choose a banner for a given project and language
centralnoticequerycampaign
Get all configuration settings for a campaign.
changeauthenticationdata
Change authentication data for the current user.
changecontentmodel
Change the content model of a page
checktoken
Check the validity of a token from action=query&meta=tokens.
cirrus-config-dump
Dump of CirrusSearch configuration.
cirrus-mapping-dump
Dump of CirrusSearch mapping for this wiki.
cirrus-profiles-dump
Dump of CirrusSearch profiles for this wiki.
cirrus-settings-dump
Dump of CirrusSearch settings for this wiki.
clearhasmsg
Clears the hasmsg flag for the current user.
clientlogin
Log in to the wiki using the interactive flow.
codediff
Fetch formatted diff from CodeReview's backing revision control system.
coderevisionupdate
Submit comments, new status and tags to a revision.
codeupdate
Update CodeReview repository data from master revision control system.
compare
Get the difference between two pages.
createaccount
Create a new user account.
delete
Delete a page.
deleteglobalaccount
Delete a global user.
echomarkread
Mark notifications as read for the current user.
echomarkseen
Mark notifications as seen for the current user.
echomute
Mute or unmute notifications from certain users or pages.
edit
Create and edit pages.
editmassmessagelist
Edit a mass message delivery list.
emailuser
Email a user.
expandtemplates
Expands all templates within wikitext.
fancycaptchareload
Get a new FancyCaptcha.
featuredfeed
Returns a featured content feed.
feedcontributions
Returns a user's contributions feed.
feedrecentchanges
Returns a recent changes feed.
feedthreads
Return a feed of discussion threads.
feedwatchlist
Returns a watchlist feed.
filerevert
Revert a file to an old version.
flow
Allows actions to be taken on Structured Discussions pages.
flow-parsoid-utils
Convert text between wikitext and HTML.
flowthank
Send a public thank-you notification for a Flow comment.
globalblock
Globally block or unblock a user.
globalpreferenceoverrides
Change local overrides for global preferences for the current user.
globalpreferences
Change global preferences of the current user.
globaluserrights
Add/remove a user to/from global groups.
graph
Access graph tag functionality.
groupreview
Set message group workflow states.
help
Display help for the specified modules.
imagerotate
This module has been disabled.
import
Import a page from another wiki, or from an XML file.
jsonconfig
Allows direct access to JsonConfig subsystem.
languagesearch
Search for language names in any script.
linkaccount
Link an account from a third-party provider to the current user.
login
Log in and get authentication cookies.
logout
Log out and clear session data.
managetags
Perform management tasks relating to change tags.
massmessage
Send a message to a list of pages.
mergehistory
Merge page histories.
move
Move a page.
newslettersubscribe
Subscribe to or unsubscribe from a newsletter.
opensearch
Search the wiki using the OpenSearch protocol.
options
Change preferences of the current user.
paraminfo
Obtain information about API modules.
parse
Parses content and returns parser output.
patrol
Patrol a page or revision.
protect
Change the protection level of a page.
purge
Purge the cache for the given titles.
query
Fetch data from and about MediaWiki.
removeauthenticationdata
Remove authentication data for the current user.
resetpassword
Send a password reset email to a user.
revisiondelete
Delete and undelete revisions.
rollback
Undo the last edit to the page.
rsd
Export an RSD (Really Simple Discovery) schema.
searchtranslations
Search translations.
setglobalaccountstatus
Set a global user's status.
setnotificationtimestamp
Update the notification timestamp for watched pages.
setpagelanguage
Change the language of a page.
shortenurl
Shorten a long URL into a shorter one.
sitematrix
Get Wikimedia sites list.
spamblacklist
Validate one or more URLs against the SpamBlacklist.
streamconfigs
Exposes event stream config. Returns only format=json with formatversion=2.
strikevote
Allows admins to strike or unstrike a vote.
tag
Add or remove change tags from individual revisions or log entries.
templatedata
Fetch data stored by the TemplateData extension.
thank
Send a thank-you notification to an editor.
threadaction
Allows actions to be taken on threads and posts in threaded discussions.
titleblacklist
Validate a page title, filename, or username against the TitleBlacklist.
transcodereset
Users with the 'transcode-reset' right can reset and re-run a transcode job.
translationaids
Query all translations aids.
translationreview
Mark translations reviewed.
translationstats
Fetch translation statistics
ttmserver
Query suggestions from translation memories.
unblock
Unblock a user.
undelete
Restore revisions of a deleted page.
unlinkaccount
Remove a linked third-party account from the current user.
upload
Upload a file, or get the status of pending uploads.
userrights
Change a user's group membership.
validatepassword
Validate a password against the wiki's password policies.
watch
Add or remove pages from the current user's watchlist.
webapp-manifest
Returns a webapp manifest.
webauthn
API Module to communicate between server and client during registration/authentication process
wikilove
Give WikiLove to another user.
mobileview
Deprecated. Returns data needed for mobile views.
tokens
Deprecated. Get tokens for data-modifying actions.
bouncehandler
Internal. Receive a bounce email and process it to handle the failing recipient.
categorytree
Internal. Internal module for the CategoryTree extension.
cspreport
Internal. Used by browsers to report violations of the Content Security Policy. This module should never be used, except when used automatically by a CSP compliant web browser.
discussiontools
Internal. Returns metadata required to initialize the discussion tools.
discussiontoolsedit
Internal. Post a message on a discussion page.
jsondata
Internal. Retrieve localized JSON data.
managemessagegroups
Internal. Add a message as a rename of an existing message or a new message in the group during imports
oathvalidate
Internal. Validate a two-factor authentication (OATH) token.
readinglists
Internal. Reading list write operations.
record-lint
Internal. Record a lint error in the database
sanitize-mapdata
Internal. Performs data validation for Kartographer extension
scribunto-console
Internal. Internal module for servicing XHR requests from the Scribunto console.
stashedit
Internal. Prepare an edit in shared cache.
timedtext
Internal. Provides timed text content for usage by <track> elements
translationcheck
Internal. Validate translations.
ulslocalization
Internal. Get the localization of ULS in the given language.
ulssetlang
Internal. Update user's preferred interface language.
visualeditor
Internal. Returns HTML5 for a page from the Parsoid service.
visualeditoredit
Internal. Save an HTML5 page to MediaWiki (converted to wikitext via the Parsoid service).
One of the following values: abusefiltercheckmatch, abusefilterchecksyntax, abusefilterevalexpression, abusefilterunblockautopromote, abuselogprivatedetails, aggregategroups, antispoof, block, centralauthtoken, centralnoticecdncacheupdatebanner, centralnoticechoicedata, centralnoticequerycampaign, changeauthenticationdata, changecontentmodel, checktoken, cirrus-config-dump, cirrus-mapping-dump, cirrus-profiles-dump, cirrus-settings-dump, clearhasmsg, clientlogin, codediff, coderevisionupdate, codeupdate, compare, createaccount, delete, deleteglobalaccount, echomarkread, echomarkseen, echomute, edit, editmassmessagelist, emailuser, expandtemplates, fancycaptchareload, featuredfeed, feedcontributions, feedrecentchanges, feedthreads, feedwatchlist, filerevert, flow-parsoid-utils, flow, flowthank, globalblock, globalpreferenceoverrides, globalpreferences, globaluserrights, graph, groupreview, help, imagerotate, import, jsonconfig, languagesearch, linkaccount, login, logout, managetags, massmessage, mergehistory, move, newslettersubscribe, opensearch, options, paraminfo, parse, patrol, protect, purge, query, removeauthenticationdata, resetpassword, revisiondelete, rollback, rsd, searchtranslations, setglobalaccountstatus, setnotificationtimestamp, setpagelanguage, shortenurl, sitematrix, spamblacklist, streamconfigs, strikevote, tag, templatedata, thank, threadaction, titleblacklist, transcodereset, translationaids, translationreview, translationstats, ttmserver, unblock, undelete, unlinkaccount, upload, userrights, validatepassword, watch, webapp-manifest, webauthn, wikilove, mobileview, tokens, bouncehandler, categorytree, cspreport, discussiontools, discussiontoolsedit, jsondata, managemessagegroups, oathvalidate, readinglists, record-lint, sanitize-mapdata, scribunto-console, stashedit, timedtext, translationcheck, ulslocalization, ulssetlang, visualeditor, visualeditoredit
Default: help
format

The format of the output.

json
Output data in JSON format.
jsonfm
Output data in JSON format (pretty-print in HTML).
none
Output nothing.
php
Output data in serialized PHP format.
phpfm
Output data in serialized PHP format (pretty-print in HTML).
rawfm
Output data, including debugging elements, in JSON format (pretty-print in HTML).
xml
Output data in XML format.
xmlfm
Output data in XML format (pretty-print in HTML).
One of the following values: json, jsonfm, none, php, phpfm, rawfm, xml, xmlfm
Default: jsonfm
maxlag

Maximum lag can be used when MediaWiki is installed on a database replicated cluster. To save actions causing any more site replication lag, this parameter can make the client wait until the replication lag is less than the specified value. In case of excessive lag, error code maxlag is returned with a message like Waiting for $host: $lag seconds lagged.
See Manual: Maxlag parameter for more information.

Type: integer
smaxage

Set the s-maxage HTTP cache control header to this many seconds. Errors are never cached.

Type: integer
Default: 0
maxage

Set the max-age HTTP cache control header to this many seconds. Errors are never cached.

Type: integer
Default: 0
assert

Verify that the user is logged in if set to user, not logged in if set to anon, or has the bot user right if bot.

One of the following values: anon, bot, user
assertuser

Verify the current user is the named user.

Type: user, by user name
requestid

Any value given here will be included in the response. May be used to distinguish requests.

servedby

Include the hostname that served the request in the results.

Type: boolean (details)
curtimestamp

Include the current timestamp in the result.

Type: boolean (details)
responselanginfo

Include the languages used for uselang and errorlang in the result.

Type: boolean (details)
origin

When accessing the API using a cross-domain AJAX request (CORS), set this to the originating domain. This must be included in any pre-flight request, and therefore must be part of the request URI (not the POST body).

For authenticated requests, this must match one of the origins in the Origin header exactly, so it has to be set to something like https://en.wikipedia.org or https://meta.wikimedia.org. If this parameter does not match the Origin header, a 403 response will be returned. If this parameter matches the Origin header and the origin is whitelisted, the Access-Control-Allow-Origin and Access-Control-Allow-Credentials headers will be set.

For non-authenticated requests, specify the value *. This will cause the Access-Control-Allow-Origin header to be set, but Access-Control-Allow-Credentials will be false and all user-specific data will be restricted.

uselang

Language to use for message translations. action=query&meta=siteinfo with siprop=languages returns a list of language codes, or specify user to use the current user's language preference, or specify content to use this wiki's content language.

Default: user
errorformat

Format to use for warning and error text output.

plaintext
Wikitext with HTML tags removed and entities replaced.
wikitext
Unparsed wikitext.
html
HTML.
raw
Message key and parameters.
none
No text output, only the error codes.
bc
Format used prior to MediaWiki 1.29. errorlang and errorsuselocal are ignored.
One of the following values: bc, html, none, plaintext, raw, wikitext
Default: bc
errorlang

Language to use for warnings and errors. action=query&meta=siteinfo with siprop=languages returns a list of language codes, or specify content to use this wiki's content language, or specify uselang to use the same value as the uselang parameter.

Default: uselang
errorsuselocal

If given, error texts will use locally-customized messages from the MediaWiki namespace.

Type: boolean (details)
centralauthtoken

When accessing the API using a cross-domain AJAX request (CORS), use this to authenticate as the current SUL user. Use action=centralauthtoken on this wiki to retrieve the token, before making the CORS request. Each token may only be used once, and expires after 10 seconds. This should be included in any pre-flight request, and therefore should be included in the request URI (not the POST body).

Permissions:
writeapi
Use of the write API
Granted to: all, user and bot
apihighlimits
Use higher limits in API queries (slow queries: 500; fast queries: 5000). The limits for slow queries also apply to multivalue parameters.
Granted to: bot and sysop

Other APIs

If you do not find what you are looking for in this API documentation, there are many other APIs related to Wikimedia projects. See the Web APIs hub for information on other APIs for Wikimedia project data and their usage.

For the REST API included with MediaWiki 1.35 and later, see API:REST API .

Code stewardship