Open Container Initiative

Open Container Initiative Blobs API

The Blobs API from Open Container Initiative — 3 operation(s) for blobs.

Documentation GitHub OpenAPI

Operations 8

GET /v2/{name}/blobs/{digest} Retrieve a blob #

HEAD /v2/{name}/blobs/{digest} Check whether a blob exists #

DELETE /v2/{name}/blobs/{digest} Delete a blob #

POST /v2/{name}/blobs/uploads/ Initiate a blob upload #

GET /v2/{name}/blobs/uploads/{reference} Get blob upload status #

PATCH /v2/{name}/blobs/uploads/{reference} Upload a blob chunk #

PUT /v2/{name}/blobs/uploads/{reference} Complete a blob upload #

DELETE /v2/{name}/blobs/uploads/{reference} Cancel a blob upload #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: OCI Distribution Specification Blobs API
  description: The Open Container Initiative Distribution Specification standardizes the HTTP API for distributing container images and other content. Registries that implement this specification expose endpoints for managing blobs, manifests, tags, and referrers under the /v2/ namespace.
  version: 1.1.0
  contact:
    name: Open Container Initiative
    url: https://opencontainers.org/
  license:
    name: Apache-2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: https://{registry}
  description: An OCI-compliant container registry
  variables:
    registry:
      default: registry.example.com
      description: The hostname of the registry
tags:
- name: Blobs
paths:
  /v2/{name}/blobs/{digest}:
    parameters:
    - $ref: '#/components/parameters/Name'
    - $ref: '#/components/parameters/Digest'
    get:
      summary: Retrieve a blob
      description: Fetch the binary content of a blob by digest.
      operationId: getBlob
      responses:
        '200':
          description: Blob content returned.
        '404':
          description: Blob not found.
      tags:
      - Blobs
    head:
      summary: Check whether a blob exists
      operationId: headBlob
      responses:
        '200':
          description: Blob exists.
        '404':
          description: Blob not found.
      tags:
      - Blobs
    delete:
      summary: Delete a blob
      operationId: deleteBlob
      responses:
        '202':
          description: Blob deleted.
        '404':
          description: Blob not found.
      tags:
      - Blobs
  /v2/{name}/blobs/uploads/:
    parameters:
    - $ref: '#/components/parameters/Name'
    post:
      summary: Initiate a blob upload
      description: Begin a new blob upload session. Use the digest query parameter for a single-request monolithic upload, or mount and from to mount a blob from another repository.
      operationId: initiateBlobUpload
      parameters:
      - name: digest
        in: query
        schema:
          type: string
        description: When supplied, performs a monolithic upload with this digest.
      - name: mount
        in: query
        schema:
          type: string
        description: Digest of a blob to mount from another repository.
      - name: from
        in: query
        schema:
          type: string
        description: Source repository name to mount the blob from.
      responses:
        '201':
          description: Upload completed (monolithic or mount).
        '202':
          description: Upload session created.
      tags:
      - Blobs
  /v2/{name}/blobs/uploads/{reference}:
    parameters:
    - $ref: '#/components/parameters/Name'
    - name: reference
      in: path
      required: true
      schema:
        type: string
      description: The upload session reference.
    get:
      summary: Get blob upload status
      operationId: getBlobUploadStatus
      responses:
        '204':
          description: Status returned via headers.
      tags:
      - Blobs
    patch:
      summary: Upload a blob chunk
      description: Stream a chunk of a blob into an active upload session.
      operationId: uploadBlobChunk
      responses:
        '202':
          description: Chunk accepted.
      tags:
      - Blobs
    put:
      summary: Complete a blob upload
      description: Finalize an upload session by providing the digest.
      operationId: completeBlobUpload
      parameters:
      - name: digest
        in: query
        required: true
        schema:
          type: string
        description: The digest of the completed blob.
      responses:
        '201':
          description: Blob upload completed.
      tags:
      - Blobs
    delete:
      summary: Cancel a blob upload
      operationId: cancelBlobUpload
      responses:
        '204':
          description: Upload cancelled.
      tags:
      - Blobs
components:
  parameters:
    Digest:
      name: digest
      in: path
      required: true
      schema:
        type: string
      description: A content-addressable digest such as sha256:abcd...
    Name:
      name: name
      in: path
      required: true
      schema:
        type: string
      description: The repository name (may contain slashes).