University of Chicago

University of Chicago Gen3 indexd — alias API

create an alias for an entity stored in an external system managed by some other authority

GitHub OpenAPI

Operations 4

GET /alias/ list aliases with pagination #
PUT /alias/{ALIASSTRING} Create or update an alias #
GET /alias/{ALIASSTRING} Fetch an alias #
DELETE /alias/{ALIASSTRING} Delete an alias #

Documentation

📖
Documentation
https://uc-cdis.github.io/gen3-user-doc/appendices/api-gen3/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/university-of-chicago/refs/heads/main/openapi/university-of-chicago-alias-api-openapi.yml

Other Resources

🔗
GitHub
https://github.com/uc-cdis
🔗
Vocabulary
https://raw.githubusercontent.com/api-evangelist/university-of-chicago/refs/heads/main/vocabulary/university-of-chicago-vocabulary.yml
🔗
x-json-ld
https://raw.githubusercontent.com/api-evangelist/university-of-chicago/refs/heads/main/json-ld/university-of-chicago-context.jsonld
🔗
GraphQL
https://raw.githubusercontent.com/api-evangelist/university-of-chicago/refs/heads/main/graphql/university-of-chicago-graphql.md

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OpenAPI Specification

university-of-chicago-alias-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Gen3 indexd OpenAPI Specification Alias API
  version: 0.1.0
  description: 'indexd is the Gen3 data indexing and GUID service, authored by the University of Chicago Center for Translational Data Science. Code: https://github.com/uc-cdis/indexd'
  termsOfService: http://cdis.uchicago.edu/terms/
  contact:
    email: cdis@uchicago.edu
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
servers:
- url: https://gen3.datacommons.io/
  description: University of Chicago Center for Translational Data Science (CTDS) reference Gen3 data commons. Gen3 is deployable software authored by CTDS (github.com/uc-cdis), so the upstream specification ships a placeholder host; this is the base URL of the deployment CTDS itself operates. The datacommons.io domain is registered to CDIS, University of Chicago.
  x-operator: institution
  x-verified: '2026-08-19'
  x-verified-evidence: https://gen3.datacommons.io/.well-known/openid-configuration
tags:
- name: alias
  description: create an alias for an entity stored in an external system managed by some other authority
  externalDocs:
    description: Find out more
    url: https://github.com/uc-cdis/indexd
paths:
  /alias/:
    get:
      deprecated: true
      tags:
      - alias
      summary: list aliases with pagination
      operationId: listAlistEntries
      parameters:
      - name: size
        in: query
        required: false
        description: size in bytes
        schema:
          type: integer
          format: int64
      - name: start
        in: query
        required: false
        description: start index for the pagination
        schema:
          type: integer
          format: int64
      - name: limit
        in: query
        required: false
        description: number of aliases to return
        schema:
          type: integer
      - name: hash
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                type: object
                properties:
                  aliases:
                    type: array
                    items:
                      type: string
                  size:
                    type: integer
                    format: int64
                    description: size in bytes
                  start:
                    type: integer
                    format: int64
                    description: start index for the pagination
                  limit:
                    type: integer
                    format: int64
                    description: number of aliases to return
                  hashes:
                    $ref: '#/components/schemas/HashInfo'
  /alias/{ALIASSTRING}:
    put:
      deprecated: true
      tags:
      - alias
      summary: Create or update an alias
      description: ''
      operationId: upsertEntry
      parameters:
      - name: ALIASSTRING
        in: path
        required: true
        description: alias like ark:/31807/DC1-TESTARK
        schema:
          type: string
      - name: rev
        in: query
        required: false
        description: Revision of the current alias to be updated. If you do not specify this then the last update wins in races.
        schema:
          type: string
          pattern: ^[a-z,0-9]{8}$
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AliasRef'
        '400':
          description: Invalid input
      security:
      - basic_auth: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AliasInputInfo'
        description: Metadata object that needs to be added to the store
        required: true
    get:
      deprecated: true
      tags:
      - alias
      summary: Fetch an alias
      description: ''
      operationId: getAliasEntry
      parameters:
      - name: ALIASSTRING
        in: path
        required: true
        description: alias like ark:/31807/DC1-TESTARK
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AliasOutputInfo'
        '400':
          description: Invalid input
      security: []
    delete:
      deprecated: true
      tags:
      - alias
      summary: Delete an alias
      description: ''
      operationId: deleteAliasEntry
      parameters:
      - name: ALIASSTRING
        in: path
        required: true
        description: alias like ark:/31807/DC1-TESTARK
        schema:
          type: string
      - name: rev
        in: query
        required: false
        description: Revision of the current alias to be deleted.
        schema:
          type: string
          pattern: ^[a-z,0-9]{8}$
      responses:
        '200':
          description: successful operation
        '400':
          description: Invalid input
      security:
      - basic_auth: []
components:
  schemas:
    AliasInputInfo:
      type: object
      required:
      - size
      - hashes
      - release
      properties:
        release:
          type: string
          description: has the entity been released?
          enum:
          - public
          - private
          - controlled
        size:
          type: integer
          format: int64
          description: size in bytes
        keeper_authority:
          description: who is keeping this entry up to date?
          type: string
        host_authority:
          description: who is hosting this entity?
          type: array
          items:
            type: string
        hashes:
          $ref: '#/components/schemas/HashInfo'
        metadata:
          type: string
    HashInfo:
      type: object
      properties:
        md5:
          type: string
          pattern: ^[0-9a-f]{32}$
        sha:
          type: string
          pattern: ^[0-9a-f]{40}$
        sha256:
          type: string
          pattern: ^[0-9a-f]{64}$
        sha512:
          type: string
          pattern: ^[0-9a-f]{128}$
        crc:
          type: string
          pattern: ^[0-9a-f]{8}$
        etag:
          type: string
          pattern: ^[0-9a-f]{32}(-\d+)?$
    AliasOutputInfo:
      type: object
      properties:
        name:
          type: string
        rev:
          type: string
          pattern: ^[0-9a-f]{8}$
        release:
          type: string
          description: has the entity been released?
          enum:
          - public
          - private
          - controlled
        size:
          type: integer
          format: int64
          description: size in bytes
        keeper_authority:
          description: who is keeping this entry up to date?
          type: string
        host_authorities:
          description: who is hosting this entity?
          type: array
          items:
            type: string
        hashes:
          $ref: '#/components/schemas/HashInfo'
        metadata:
          type: string
        limit:
          type: integer
          format: int64
          description: number of aliases to return
        start:
          type: integer
          format: int64
          description: start index for the pagination
        urls:
          type: array
          items:
            type: string
    AliasRef:
      type: object
      properties:
        name:
          type: string
        rev:
          type: string
          pattern: ^[0-9a-f]{8}$
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: /oauth/authorize
          tokenUrl: /oauth/token
          scopes:
            user: generic user access