Noun Project

Noun Project Autocomplete API

Suggest search terms based on a query prefix.

Documentation GitHub OpenAPI

Operations 1

GET /v2/icon/autocomplete Autocomplete Icon Search #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Noun Project API V2 Autocomplete API
  description: 'The Noun Project API V2 is an OAuth 1.0a-secured REST API that provides

    access to nearly 10 million royalty-free PNG and SVG icons.'
  version: '2.0'
  termsOfService: https://thenounproject.com/legal/api-terms-of-use/
  contact:
    name: Noun Project API Support
    url: https://thenounproject.zendesk.com/
  license:
    name: Royalty-Free Commercial Use
    url: https://thenounproject.com/legal/api-terms-of-use/
  x-generated-from: documentation
  x-last-validated: '2026-05-28'
servers:
- url: https://api.thenounproject.com
  description: Noun Project API production endpoint
security:
- oauth1: []
tags:
- name: Autocomplete
  description: Suggest search terms based on a query prefix.
paths:
  /v2/icon/autocomplete:
    get:
      operationId: autocompleteIcons
      summary: Autocomplete Icon Search
      description: Suggest icon search terms based on a query prefix. Returns up to 10 suggested terms ranked by relevance.
      tags:
      - Autocomplete
      parameters:
      - name: query
        in: query
        description: Query prefix used to generate term suggestions.
        required: true
        schema:
          type: string
        example: ro
      - name: blacklist
        in: query
        description: When true, applies the client's configured blocklist.
        required: false
        schema:
          type: boolean
          default: false
      - name: limit
        in: query
        description: Maximum suggestions returned (hard cap of 10).
        required: false
        schema:
          type: integer
          minimum: 1
          maximum: 10
          default: 10
      responses:
        '200':
          description: Suggested search terms.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AutocompleteResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
      security:
      - oauth1: []
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    ErrorResponse:
      type: object
      description: Standard error response payload returned for 4xx and 5xx responses.
      properties:
        error:
          type: string
          description: Machine-readable error code.
          example: rate_limit_exceeded
        message:
          type: string
          description: Human-readable error message.
          example: The monthly quota for this client key has been exceeded.
        status:
          type: integer
          description: HTTP status code echo.
          example: 429
        request_id:
          type: string
          description: Server-generated identifier for the failing request.
          example: req-abc123def456
    AutocompleteResponse:
      type: object
      description: Autocomplete suggestions for an icon search query.
      properties:
        autocomplete:
          type: array
          description: Suggested search terms ranked by relevance.
          items:
            type: string
          example:
          - rocket
          - rocket ship
          - rocket launch
          - rocket science
        generated_at:
          type: string
          format: date-time
          description: ISO 8601 timestamp of when the response was generated.
          example: '2026-05-28T14:00:00Z'
      required:
      - autocomplete
  responses:
    RateLimited:
      description: The hourly, daily, or monthly request quota has been exceeded.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Missing or invalid OAuth 1.0a credentials.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    oauth1:
      type: apiKey
      in: header
      name: Authorization
      description: OAuth 1.0a signed Authorization header constructed with the client key and secret obtained from the Noun Project developer portal. A nonce of at least 8 characters is required. Use any standards-compliant OAuth 1.0a library (requests_oauthlib, Faraday-OAuth, DotNetOpenAuth, etc.).
      x-auth-type: OAuth 1.0a
      x-token-url: https://thenounproject.com/developers/apps/
externalDocs:
  description: Noun Project API Documentation
  url: https://api.thenounproject.com/documentation.html