Charles University

LINDAT MorphoDiTa API

Public keyless REST API for morphological analysis, morphological generation, part-of-speech tagging and tokenization, principally for Czech, operated by UFAL at Charles University. The OpenAPI here is derived by API Evangelist from the service's published REST API reference and verified against live responses.

GitHub OpenAPI

Operations 5

GET /models List available MorphoDiTa models #
GET /tag Part-of-speech tag and lemmatize the supplied text #
GET /analyze Perform morphological analysis of the supplied text #
GET /generate Perform morphological generation from supplied lemmas #
GET /tokenize Tokenize the supplied text #

Documentation

📖
Documentation
https://lindat.mff.cuni.cz/services/morphodita/api-reference.php

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/charles/refs/heads/main/openapi/charles-morphodita-api-openapi.yml

Other Resources

🔗
x-examples
https://raw.githubusercontent.com/api-evangelist/charles/refs/heads/main/examples/charles-morphodita-tag-example.json
🔗
TermsOfService
https://lindat.mff.cuni.cz/en/terms-of-use

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OpenAPI Specification

charles-morphodita-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: LINDAT Morphodita API
  version: '1'
  summary: Morphological analysis, generation, tagging and tokenization operated by ÚFAL at Charles University.
  description: Public REST API for MorphoDiTa (Morphological Dictionary and Tagger) operated by the Institute of Formal and Applied Linguistics (ÚFAL), Faculty of Mathematics and Physics, Charles University, and delivered through the LINDAT/CLARIAH-CZ research infrastructure.
  contact:
    name: LINDAT/CLARIAH-CZ Helpdesk
    email: lindat-help@ufal.mff.cuni.cz
    url: https://lindat.mff.cuni.cz/user_feedback
  license:
    name: CC BY-NC-SA
    url: https://creativecommons.org/licenses/by-nc-sa/4.0/
  termsOfService: https://lindat.mff.cuni.cz/en/terms-of-use
servers:
- url: https://lindat.mff.cuni.cz/services/morphodita/api
  description: Production service operated by ÚFAL, Charles University
tags:
- name: morphodita
  description: Morphological analysis, generation, tagging and tokenization operations
paths:
  /models:
    get:
      operationId: listMorphoDiTaModels
      summary: List available MorphoDiTa models
      tags:
      - morphodita
      responses:
        '200':
          description: Model inventory
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ModelList'
  /tag:
    get:
      operationId: tagText
      summary: Part-of-speech tag and lemmatize the supplied text
      tags:
      - morphodita
      parameters:
      - $ref: '#/components/parameters/Data'
      - $ref: '#/components/parameters/Model'
      - $ref: '#/components/parameters/Guesser'
      - $ref: '#/components/parameters/Input'
      - $ref: '#/components/parameters/ConvertTagset'
      - $ref: '#/components/parameters/Derivation'
      - name: output
        in: query
        required: false
        description: Output format. `json` returns an array of sentences of token objects carrying `token`, `lemma`, `tag` and optionally `space`.
        schema:
          type: string
          enum:
          - json
          - xml
          - vertical
          default: xml
      responses:
        '200':
          description: Tagging result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceResponse'
  /analyze:
    get:
      operationId: analyzeText
      summary: Perform morphological analysis of the supplied text
      tags:
      - morphodita
      parameters:
      - $ref: '#/components/parameters/Data'
      - $ref: '#/components/parameters/Model'
      - $ref: '#/components/parameters/Guesser'
      - $ref: '#/components/parameters/Input'
      - $ref: '#/components/parameters/ConvertTagset'
      - $ref: '#/components/parameters/Derivation'
      - name: output
        in: query
        required: false
        description: Output format. `json` returns token objects each carrying an `analyses` array of `lemma`/`tag` pairs.
        schema:
          type: string
          enum:
          - json
          - xml
          - vertical
          default: xml
      responses:
        '200':
          description: Analysis result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceResponse'
  /generate:
    get:
      operationId: generateForms
      summary: Perform morphological generation from supplied lemmas
      tags:
      - morphodita
      parameters:
      - $ref: '#/components/parameters/Data'
      - $ref: '#/components/parameters/Model'
      - $ref: '#/components/parameters/Guesser'
      - $ref: '#/components/parameters/ConvertTagset'
      - name: output
        in: query
        required: false
        description: Output format. `json` returns an array of lemma results, each an array of objects carrying `form`, `lemma` and `tag`.
        schema:
          type: string
          enum:
          - json
          - vertical
          default: vertical
      responses:
        '200':
          description: Generation result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceResponse'
  /tokenize:
    get:
      operationId: tokenizeTextMorphoDiTa
      summary: Tokenize the supplied text
      tags:
      - morphodita
      parameters:
      - $ref: '#/components/parameters/Data'
      - $ref: '#/components/parameters/Model'
      - name: output
        in: query
        required: false
        description: Output format.
        schema:
          type: string
          enum:
          - json
          - xml
          - vertical
          default: xml
      responses:
        '200':
          description: Tokenization result
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceResponse'
components:
  parameters:
    Input:
      name: input
      in: query
      required: false
      description: Input format to use.
      schema:
        type: string
        enum:
        - untokenized
        - vertical
        default: untokenized
    ConvertTagset:
      name: convert_tagset
      in: query
      required: false
      description: Apply the specified tag-set converter.
      schema:
        type: string
        enum:
        - pdt_to_conll2009
        - strip_lemma_comment
        - strip_lemma_id
    Derivation:
      name: derivation
      in: query
      required: false
      description: Apply the specified morphological derivation to lemmas.
      schema:
        type: string
        enum:
        - none
        - root
        - path
        - tree
        default: none
    Guesser:
      name: guesser
      in: query
      required: false
      description: Use the morphological guesser for unknown words.
      schema:
        type: string
        enum:
        - 'yes'
        - 'no'
        default: 'yes'
    Model:
      name: model
      in: query
      required: false
      description: Model to use; accepts a full name, a name without the version suffix, or a prefix.
      schema:
        type: string
    Data:
      name: data
      in: query
      required: true
      description: Input text in UTF-8.
      schema:
        type: string
  schemas:
    ModelList:
      type: object
      properties:
        models:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
              enum:
              - tag
              - analyze
              - generate
              - tokenize
        default_model:
          type: string
      required:
      - models
      - default_model
    ServiceResponse:
      type: object
      description: Common LINDAT web-service response envelope.
      properties:
        model:
          type: string
        acknowledgements:
          type: array
          items:
            type: string
            format: uri
        result:
          description: Output in the requested output format — a string for xml/vertical, a structured array for json.
      required:
      - model
      - result