Hebrew University of Jerusalem Specializations API

openapi: 3.2.0
info:
  title: Hebrew University of Jerusalem Shnaton Course Catalog…
  version: '2027'
  summary: Public, unauthenticated JSON API behind the Hebrew University of Jerusalem's Shnaton course catalog.
  description: The read API that serves shnaton.huji.ac.il, the Hebrew University of Jerusalem's official course catalog ("Shnaton" / שנתון).
  contact:
    name: Hebrew University of Jerusalem — Shnaton course catalog
    url: https://shnaton.huji.ac.il/
  termsOfService: https://en.huji.ac.il/en/accessibility-statement
  x-operator: institution
  x-operator-basis: 'shnaton.huji.ac.il CNAME -> orb-bif5.cc.huji.ac.il -> 128.139.7.32; RIPE inetnum 128.139.0.0/16 "ILAN", registrant ORG-IIIC1-RIPE (IUCC - Israel InterUniversity Computation Center), announced by AS378 MACHBA-AS; TLS subject O=The Hebrew University of Jerusalem, CN=*.huji.ac.il, issuer GEANT TLS RSA 1 (Hellenic Academic and Research Institutions CA); response header X-HujiShnatonServer: Server 2.'
  x-provenance:
    method: derived
    generated: '2026-09-01'
    source:
    - https://shnaton.huji.ac.il/assets/index-DcMgIxCt.js
    - https://shnaton.huji.ac.il/api/health
    - https://shnaton.huji.ac.il/api/faculties
    - https://shnaton.huji.ac.il/api/courses/search-advanced
    note: Derived by API Evangelist from the catalog's own JavaScript client plus live probes of the production host. NOT published by the Hebrew University of Jerusalem.
servers:
- url: https://shnaton.huji.ac.il/api
  description: Production. Public and unauthenticated; verified live 2026-09-01.
tags:
- name: Specializations
  description: Specializations, units and yearly study roadmaps.
paths:
  /specializations/all:
    get:
      tags:
      - Specializations
      operationId: listSpecializations
      summary: List all specializations for a year
      description: Every specialization and unit offered in the given academic year, with its degree program and any threshold sets. `year` is REQUIRED; omitting it returns HTTP 400 with body `{"code":"ERR_1101"}`. Verified 200, 60,697 bytes, 153 items, 2026-09-01.
      parameters:
      - $ref: '#/components/parameters/YearRequired'
      responses:
        '200':
          description: Specialization list.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Specialization'
        '400':
          $ref: '#/components/responses/CodedError'
  /specializations/search:
    get:
      tags:
      - Specializations
      operationId: searchSpecializations
      summary: Search specializations by name
      description: Free-text search over specialization names. `name` is REQUIRED and validated as a string of 2–100 characters; violations return an RFC 9457 problem document. Verified 200 (empty array for a non-matching term) and 400, 2026-09-01.
      parameters:
      - $ref: '#/components/parameters/NameQuery'
      - $ref: '#/components/parameters/YearRequired'
      responses:
        '200':
          description: Matching specializations.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Specialization'
        '400':
          $ref: '#/components/responses/ProblemDetails'
  /specializations/search-by-course:
    get:
      tags:
      - Specializations
      operationId: searchSpecializationsByCourse
      summary: Find specializations containing a course
      description: Specializations whose requirements include the given course code, for a threshold year.
      parameters:
      - $ref: '#/components/parameters/CourseCodeQuery'
      - $ref: '#/components/parameters/ThresholdYear'
      responses:
        '200':
          description: Matching specializations.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Specialization'
        '400':
          $ref: '#/components/responses/ProblemDetails'
  /yearly-roadmaps/search:
    get:
      tags:
      - Specializations
      operationId: searchYearlyRoadmaps
      summary: Search yearly study roadmaps by name
      description: Free-text search over study roadmaps. `name` is REQUIRED and validated as 2–100 characters — a shorter value returns an RFC 9457 problem document naming the constraint. Verified 400 on a one-character term, 2026-09-01.
      parameters:
      - $ref: '#/components/parameters/NameQuery'
      - $ref: '#/components/parameters/YearRequired'
      responses:
        '200':
          description: Matching roadmaps.
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  additionalProperties: true
        '400':
          $ref: '#/components/responses/ProblemDetails'
  /yearly-roadmaps/search-by-course:
    get:
      tags:
      - Specializations
      operationId: searchYearlyRoadmapsByCourse
      summary: Find yearly roadmaps containing a course
      parameters:
      - $ref: '#/components/parameters/CourseCodeQuery'
      - $ref: '#/components/parameters/ThresholdYear'
      responses:
        '200':
          description: Matching roadmaps.
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  additionalProperties: true
        '400':
          $ref: '#/components/responses/ProblemDetails'
  /yearly-roadmaps/{roadmapId}/combinations:
    get:
      tags:
      - Specializations
      operationId: getRoadmapCombinations
      summary: Get valid specialization combinations for a roadmap
      parameters:
      - name: roadmapId
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/YearRequired'
      responses:
        '200':
          description: Roadmap combinations.
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  additionalProperties: true
components:
  schemas:
    ProblemDetails:
      type: object
      description: RFC 9457 problem document as emitted by ASP.NET Core model validation.
      properties:
        type:
          type: string
          format: uri
          example: https://tools.ietf.org/html/rfc9110#section-15.5.1
        title:
          type: string
          example: One or more validation errors occurred.
        status:
          type: integer
          example: 400
        errors:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
        traceId:
          type: string
          description: W3C trace context identifier for the failed request.
    Specialization:
      type: object
      properties:
        id:
          type: integer
        code:
          type: string
        name:
          $ref: '#/components/schemas/BilingualText'
        learningProgramName:
          $ref: '#/components/schemas/BilingualText'
        learningProgramDisplayName:
          $ref: '#/components/schemas/BilingualText'
        learningProgramCode:
          type: string
        learningProgramSortOrder:
          type: integer
        thresholds:
          type: array
          items:
            type: object
            additionalProperties: true
        academicInfo:
          type:
          - object
          - 'null'
          additionalProperties: true
      required:
      - id
      - code
      - name
    CodedError:
      type: object
      description: Application-coded error. Carries a `code` only — no message, no title, no trace id. Observed as `{"code":"ERR_1101"}` when a required `year` parameter is omitted.
      properties:
        code:
          type: string
          example: ERR_1101
      required:
      - code
    BilingualText:
      type: object
      description: Every human-readable string in this API. Hebrew is the primary member; the English member is usually present but may be an empty string.
      properties:
        he:
          type: string
          description: Hebrew text.
        en:
          type: string
          description: English text.
      required:
      - he
  parameters:
    NameQuery:
      name: name
      in: query
      required: true
      description: Search term. Validated server-side as 2–100 characters.
      schema:
        type: string
        minLength: 2
        maxLength: 100
    ThresholdYear:
      name: thresholdYear
      in: query
      required: true
      description: Year of entry a roadmap or requirement set is keyed to.
      schema:
        type: integer
      example: 2027
    CourseCodeQuery:
      name: courseCode
      in: query
      required: true
      description: Registrar course code.
      schema:
        type: string
      example: '140713'
    YearRequired:
      name: year
      in: query
      required: true
      description: Academic year in Gregorian form, as returned by `/reference-data/active-years`.
      schema:
        type: integer
      example: 2027
  responses:
    CodedError:
      description: Application-coded error — a bare code object, no problem document.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/CodedError'
    ProblemDetails:
      description: ASP.NET Core validation failure, returned as an RFC 9457 problem document with a `type` pointing at RFC 9110 section 15.5.1.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ProblemDetails'