List of module names (values of the <var>action</var> and <var>format</var> parameters, or <kbd>main</kbd>). Can specify submodules with a <kbd>+</kbd>.

Modules to display help for (values of the <var>action</var> and <var>format</var> parameters, or <kbd>main</kbd>). Can specify submodules with a <kbd>+</kbd>.

Some parameter types in API requests need further explanation:
;boolean
:Boolean parameters work like HTML checkboxes: if the parameter is specified, regardless of value, it is considered true. For a false value, omit the parameter entirely.
;timestamp
:Timestamps may be specified in several formats. ISO 8601 date and time is recommended. All times are in UTC, any included timezone is ignored.
:* ISO 8601 date and time, <kbd><var>2001</var>-<var>01</var>-<var>15</var>T<var>14</var>:<var>56</var>:<var>00</var>Z</kbd> (punctuation and <kbd>Z</kbd> are optional)
:* ISO 8601 date and time with (ignored) fractional seconds, <kbd><var>2001</var>-<var>01</var>-<var>15</var>T<var>14</var>:<var>56</var>:<var>00</var>.<var>00001</var>Z</kbd> (dashes, colons, and <kbd>Z</kbd> are optional)
:* MediaWiki format, <kbd><var>2001</var><var>01</var><var>15</var><var>14</var><var>56</var><var>00</var></kbd>
:* Generic numeric format, <kbd><var>2001</var>-<var>01</var>-<var>15</var> <var>14</var>:<var>56</var>:<var>00</var></kbd> (optional timezone of <kbd>GMT</kbd>, <kbd>+<var>##</var></kbd>, or <kbd>-<var>##</var></kbd> is ignored)
:* EXIF format, <kbd><var>2001</var>:<var>01</var>:<var>15</var> <var>14</var>:<var>56</var>:<var>00</var></kbd>
:*RFC 2822 format (timezone may be omitted), <kbd><var>Mon</var>, <var>15</var> <var>Jan</var> <var>2001</var> <var>14</var>:<var>56</var>:<var>00</var></kbd>
:* RFC 850 format (timezone may be omitted), <kbd><var>Monday</var>, <var>15</var>-<var>Jan</var>-<var>2001</var> <var>14</var>:<var>56</var>:<var>00</var></kbd>
:* C ctime format, <kbd><var>Mon</var> <var>Jan</var> <var>15</var> <var>14</var>:<var>56</var>:<var>00</var> <var>2001</var></kbd>
:* Seconds since 1970-01-01T00:00:00Z as a 1 to 13 digit integer (excluding <kbd>0</kbd>)
:* The string <kbd>now</kbd>

Parses content and returns parser output.

See the various prop-modules of <kbd>[[Special:ApiHelp/query|action=query]]</kbd> to get information from the current version of a page.

There are several ways to specify the text to parse:
# Specify a page or revision, using <var>$1page</var>, <var>$1pageid</var>, or <var>$1oldid</var>.
# Specify content explicitly, using <var>$1text</var>, <var>$1title</var>, and <var>$1contentmodel</var>.
# Specify only a summary to parse. <var>$1prop</var> should be given an empty value.

List of query module names (value of <var>prop</var>, <var>meta</var> or <var>list</var> parameter). Use <kbd>$1modules=query+foo</kbd> instead of <kbd>$1querymodules=foo</kbd>.

List of query module names (value of <var>prop</var>, <var>meta</var> or <var>list</var> parameter). Use <kbd>$1modules=query+foo</kbd> instead of <kbd>$1querymodules=foo</kbd>.

Filter log actions to only this action. Overrides <var>$1type</var>. In the list of possible values, values with the asterisk wildcard such as <kbd>action/*</kbd> can have different strings after the slash (/).

Perform a prefix search for page titles.

Despite the similarity in names, this module is not intended to be equivalent to [[Special:PrefixIndex]]; for that, see <kbd>[[Special:ApiHelp/query+allpages|action=query&list=allpages]]</kbd> with the <kbd>apprefix</kbd> parameter. The purpose of this module is similar to <kbd>[[Special:ApiHelp/opensearch|action=opensearch]]</kbd>: to take user input and provide the best-matching titles. Depending on the search engine backend, this might include typo correction, redirect avoidance, or other heuristics.

List the deleted revisions of the pages <kbd>Main Page</kbd> and <kbd>Talk:Main Page</kbd>, with content.

Language to use for message translations. <kbd>[[Special:ApiHelp/query+siteinfo|action=query&meta=siteinfo]]</kbd> with <kbd>siprop=languages</kbd> returns a list of language codes, or specify <kbd>user</kbd> to use the current user's language preference, or specify <kbd>content</kbd> to use this wiki's content language.

ID of the block to unblock (obtained through <kbd>list=blocks</kbd>). Cannot be used together with <var>$1user</var>.

ID of the block to unblock (obtained through <kbd>list=blocks</kbd>). Cannot be used together with <var>$1user</var>.

Liste des noms de module (valeurs des paramètres <var>action</var> et <var>format</var>, ou <kbd>main</kbd>). Peut spécifier des sous-modules avec un <kbd>+</kbd>.

List of format module names (value of <var>format</var> parameter). Use <var>$1modules</var> instead.

This is the HTML representation of the $1 format. HTML is good for debugging, but is unsuitable for application use.

Specify the <var>format</var> parameter to change the output format. To see the non-HTML representation of the $1 format, set <kbd>format=$2</kbd>.

See the [[mw:API|complete documentation]], or the [[Special:ApiHelp/main|API help]] for more information.

List the last deleted revisions of the pages <kbd>Main Page</kbd> and <kbd>Talk:Main Page</kbd>, with content (mode 1).

Only parse the content of this section number.

When <kbd>new</kbd>, parse <var>$1text</var> and <var>$1sectiontitle</var> as if adding a new section to the page.

<kbd>new</kbd> is allowed only when specifying <var>text</var>.

Get data with content for the last revision of titles <kbd>API</kbd> and <kbd>Main Page</kbd>.

Show a list of files with MIME type <kbd>image/png</kbd> or <kbd>image/gif</kbd>

The general procedure to use this module is:
# Fetch the fields available from <kbd>[[Special:ApiHelp/query+authmanagerinfo|action=query&meta=authmanagerinfo]]</kbd> with <kbd>amirequestsfor=$4</kbd>, and a <kbd>$5</kbd> token from <kbd>[[Special:ApiHelp/query+tokens|action=query&meta=tokens]]</kbd>.
# Present the fields to the user, and obtain their submission.
# Post to this module, supplying <var>$1returnurl</var> and any relevant fields.
# Check the <samp>status</samp> in the response.
#* If you received <samp>PASS</samp> or <samp>FAIL</samp>, you're done. The operation either succeeded or it didn't.
#* If you received <samp>UI</samp>, present the new fields to the user and obtain their submission. Then post to this module with <var>$1continue</var> and the relevant fields set, and repeat step 4.
#* If you received <samp>REDIRECT</samp>, direct the user to the <samp>redirecttarget</samp> and wait for the return to <var>$1returnurl</var>. Then post to this module with <var>$1continue</var> and any fields passed to the return URL, and repeat step 4.
#* If you received <samp>RESTART</samp>, that means the authentication worked but we don't have a linked user account. You might treat this as <samp>UI</samp> or as <samp>FAIL</samp>.

Protocol of the URL. If empty and <var>$1query</var> set, the protocol is <kbd>http</kbd>. Leave both this and <var>$1query</var> empty to list all external links.

Protocol of the URL. If empty and <var>$1query</var> is set, the protocol is <kbd>http</kbd>. Leave both this and <var>$1query</var> empty to list all external links.

Protocol of the URL. If empty and <var>$1query</var> is set, the protocol is <kbd>http</kbd>. Leave both this and <var>$1query</var> empty to list all external links.

Get a list of pages transcluding <kbd>Main Page</kbd>.

Get a list of pages transcluding <kbd>Main Page</kbd>.