ConceptNet Utilities API

URI normalization and text standardization

Documentation GitHub OpenAPI

Operations 1

GET /uri Normalize text to a ConceptNet URI #

Specifications

https://raw.githubusercontent.com/api-evangelist/conceptnet/refs/heads/main/openapi/conceptnet-utilities-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: ConceptNet REST Utilities API
  description: ConceptNet is a freely available multilingual knowledge graph providing computers access to common-sense knowledge.
  version: '5.7'
  license:
    name: CC BY-SA 4.0
    url: https://creativecommons.org/licenses/by-sa/4.0/
  contact:
    name: ConceptNet Users Group
    url: https://groups.google.com/g/conceptnet-users
  x-website: https://conceptnet.io
  x-github: https://github.com/commonsense/conceptnet5
servers:
- url: https://api.conceptnet.io
  description: ConceptNet public API
tags:
- name: Utilities
  description: URI normalization and text standardization
paths:
  /uri:
    get:
      operationId: normalizeUri
      summary: Normalize text to a ConceptNet URI
      description: Converts a raw natural-language phrase in any supported language into a canonical ConceptNet URI. Handles tokenization, lowercasing, stopword removal, and language-specific normalization. The resulting URI can be used directly in other API endpoints. Also accessible as /normalize and /standardize.
      tags:
      - Utilities
      parameters:
      - name: text
        in: query
        description: Natural-language phrase to normalize (use "text" or "term")
        required: false
        schema:
          type: string
          example: french toast
      - name: term
        in: query
        description: Alternative parameter name for the phrase to normalize
        required: false
        schema:
          type: string
      - name: language
        in: query
        description: BCP-47 language code for the input text
        required: true
        schema:
          type: string
          example: en
      responses:
        '200':
          description: Normalized ConceptNet URI
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UriResult'
              example:
                '@id': /uri?language=en&text=french+toast
                uri: /c/en/french_toast
        '400':
          description: Missing language or text parameter
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    UriResult:
      type: object
      description: URI normalization result
      properties:
        '@id':
          type: string
          description: URI of this normalization result
        uri:
          type: string
          description: Canonical ConceptNet URI for the input text
          example: /c/en/french_toast
    Error:
      type: object
      description: API error response
      properties:
        error:
          type: string
          description: Error type identifier
        details:
          type: string
          description: Human-readable error description