openapi: 3.0.3
info:
  title: MediaWiki Action articles Math API
  description: 'The MediaWiki Action API is the original programmatic interface to MediaWiki, exposed under /w/api.php on every MediaWiki installation. All operations dispatch via the ?action= query parameter. The API supports JSON, XML, and PHP serialization; JSON is the recommended format.


    Wikimedia projects strongly recommend serial (not parallel) calls, the use of maxlag for non-interactive jobs, and a contactable User-Agent header. The Action API remains the primary write interface (edit, upload, login, patrol) even where the Core REST API is also available.'
  version: '1.45'
  x-generated-from: documentation
  x-source-url: https://www.mediawiki.org/wiki/API:Main_page
  x-last-validated: '2026-05-29'
  contact:
    name: Wikimedia Foundation
    url: https://www.mediawiki.org/wiki/API:Etiquette
  license:
    name: CC BY-SA 4.0
    url: https://creativecommons.org/licenses/by-sa/4.0/
servers:
- url: https://en.wikipedia.org/w
  description: English Wikipedia
- url: https://{lang}.wikipedia.org/w
  description: Per-language Wikipedia
  variables:
    lang:
      default: en
      description: Language code
- url: https://commons.wikimedia.org/w
  description: Wikimedia Commons
- url: https://www.wikidata.org/w
  description: Wikidata
- url: https://www.mediawiki.org/w
  description: MediaWiki.org
tags:
- name: Math
  description: formula rendering
paths:
  /media/math/check/{type}:
    post:
      deprecated: true
      tags:
      - Math
      summary: Wikimedia REST Check and Normalize a TeX Formula.
      description: 'Checks the supplied TeX formula for correctness and returns the

        normalised formula representation as well as information about

        identifiers. Available types are tex and inline-tex. The response

        contains the `x-resource-location` header which can be used to retrieve

        the render of the checked formula in one of the supported rendering

        formats. Just append the value of the header to `/media/math/{format}/`

        and perform a GET request against that URL.


        **NOTE**: the use of this endpoint is *strongly discouraged*. Instead, use the identical endpoint of the (canonical) Math API on the `wikimedia.org` domain.


        Stability: [deprecated](https://www.mediawiki.org/wiki/API_versioning#Deprecated).

        '
      parameters:
      - name: type
        in: path
        description: The input type of the given formula; can be tex or inline-tex
        required: true
        schema:
          type: string
          enum:
          - tex
          - inline-tex
          - chem
      requestBody:
        content:
          multipart/form-data:
            schema:
              required:
              - q
              properties:
                q:
                  type: string
                  description: The formula to check
        required: true
      responses:
        '200':
          description: Information about the checked formula
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Invalid type
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/problem'
      x-monitor: true
      x-amples:
      - title: Mathoid - check test formula
        request:
          params:
            domain: wikimedia.org
            type: tex
          body:
            q: E=mc^{2}
        response:
          status: 200
          headers:
            content-type: /^application\/json/
            x-resource-location: /.+/
            cache-control: no-cache
          body:
            success: true
            checked: /.+/
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /media/math/formula/{hash}:
    get:
      deprecated: true
      tags:
      - Math
      summary: Wikimedia REST Get a Previously-stored Formula
      description: 'Returns the previously-stored formula via `/media/math/check/{type}` for

        the given hash.


        **NOTE**: the use of this endpoint is *strongly discouraged*. Instead, use the identical endpoint of the (canonical) Math API on the `wikimedia.org` domain.


        Stability: [deprecated](https://www.mediawiki.org/wiki/API_versioning#Deprecated).

        '
      parameters:
      - name: hash
        in: path
        description: The hash string of the previous POST data
        required: true
        schema:
          minLength: 1
          type: string
      responses:
        '200':
          description: Information about the checked formula
          content:
            application/json:
              schema:
                type: object
        '404':
          description: Data for the given hash cannot be found
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/problem'
      x-monitor: false
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /media/math/render/{format}/{hash}:
    get:
      deprecated: true
      tags:
      - Math
      summary: Wikimedia REST Get Rendered Formula in the Given Format.
      description: 'Given a request hash, renders a TeX formula into its mathematic

        representation in the given format. When a request is issued to the

        `/media/math/check/{format}` POST endpoint, the response contains the

        `x-resource-location` header denoting the hash ID of the POST data. Once

        obtained, this endpoint has to be used to obtain the actual render.


        **NOTE**: the use of this endpoint is *strongly discouraged*. Instead, use the identical endpoint of the (canonical) Math API on the `wikimedia.org` domain.


        Stability: [deprecated](https://www.mediawiki.org/wiki/API_versioning#Deprecated).

        '
      parameters:
      - name: format
        in: path
        description: The output format; can be svg or mml
        required: true
        schema:
          type: string
          enum:
          - svg
          - mml
          - png
      - name: hash
        in: path
        description: The hash string of the previous POST data
        required: true
        schema:
          minLength: 1
          type: string
      responses:
        '200':
          description: The rendered formula
          content:
            image/svg+xml:
              schema:
                type: string
            application/mathml+xml:
              schema:
                type: string
        '404':
          description: Unknown format or hash ID
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/problem'
      x-monitor: false
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    problem:
      required:
      - type
      type: object
      properties:
        type:
          type: string
        title:
          type: string
        detail:
          type: string
        instance:
          type: string
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: OAuth 2.0 bearer token from meta.wikimedia.org
    CookieAuth:
      type: apiKey
      in: cookie
      name: '{wiki}wikiUserID'
      description: Session cookie obtained via action=login or action=clientlogin