Buildpack Registry Extension

openapi: 3.1.0
info:
  title: Cloud Native Buildpacks Registry API
  description: >
    The Buildpack Registry API serves the registry-index for the
    Cloud Native Buildpacks community registry. It exposes endpoints for
    searching the registry by keyword and for retrieving namespaced
    buildpack version metadata. The registry is backed by the
    `buildpacks/registry-index` GitHub repository and is consumed by the
    `pack` CLI (`pack buildpack pull/register/yank`) and by buildpack
    authors who publish to the public CNB registry.
  version: "1.0"
  contact:
    name: Cloud Native Buildpacks
    url: https://buildpacks.io
  license:
    name: Apache-2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
  - url: https://registry.buildpacks.io/api/v1
    description: Public Buildpack Registry
tags:
  - name: Search
    description: Search the buildpack registry by keyword
  - name: Buildpacks
    description: Retrieve buildpack version metadata
paths:
  /search:
    get:
      summary: Search Buildpacks
      description: >
        Search the registry-index for buildpacks whose id, namespace,
        description, or keywords match the supplied terms.
      operationId: searchBuildpacks
      tags:
        - Search
      parameters:
        - name: matches
          in: query
          required: true
          description: One or more space-separated keywords to match.
          schema:
            type: string
            example: nodejs
      responses:
        "200":
          description: Search results
          content:
            application/json:
              schema:
                type: object
                properties:
                  matches:
                    type: array
                    items:
                      $ref: '#/components/schemas/BuildpackSummary'
                required:
                  - matches
  /buildpacks/{namespace}/{name}:
    get:
      summary: List Buildpack Versions
      description: >
        Return every published version of a single namespaced buildpack
        (e.g. `paketo-buildpacks/nodejs`).
      operationId: listBuildpackVersions
      tags:
        - Buildpacks
      parameters:
        - name: namespace
          in: path
          required: true
          description: The buildpack namespace (registry account).
          schema:
            type: string
            example: paketo-buildpacks
        - name: name
          in: path
          required: true
          description: The buildpack name within the namespace.
          schema:
            type: string
            example: nodejs
      responses:
        "200":
          description: List of versions
          content:
            application/json:
              schema:
                type: object
                properties:
                  latest:
                    $ref: '#/components/schemas/BuildpackVersion'
                  versions:
                    type: array
                    items:
                      $ref: '#/components/schemas/BuildpackVersion'
        "404":
          description: Buildpack not found
  /buildpacks/{namespace}/{name}/{version}:
    get:
      summary: Get Buildpack Version
      description: >
        Return registry metadata for a specific version of a
        namespaced buildpack, including the OCI image reference, yanked
        state, and supported stacks/targets.
      operationId: getBuildpackVersion
      tags:
        - Buildpacks
      parameters:
        - name: namespace
          in: path
          required: true
          schema:
            type: string
            example: paketo-buildpacks
        - name: name
          in: path
          required: true
          schema:
            type: string
            example: nodejs
        - name: version
          in: path
          required: true
          description: Semantic version of the buildpack.
          schema:
            type: string
            example: 4.5.1
      responses:
        "200":
          description: Buildpack version metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BuildpackVersion'
        "404":
          description: Buildpack version not found
components:
  schemas:
    BuildpackSummary:
      type: object
      description: Short-form match returned by /search.
      properties:
        namespace:
          type: string
          description: Registry namespace.
          example: paketo-buildpacks
        name:
          type: string
          description: Buildpack name within the namespace.
          example: nodejs
        description:
          type: string
        latest_version:
          type: string
          example: 4.5.1
    BuildpackVersion:
      type: object
      description: Full record for one published buildpack version.
      properties:
        id:
          type: string
          description: Stable internal id of this version row in the registry-index.
        namespace:
          type: string
          example: paketo-buildpacks
        name:
          type: string
          example: nodejs
        version:
          type: string
          example: 4.5.1
        yanked:
          type: boolean
          description: True when the version has been retracted via `pack buildpack yank`.
        addr:
          type: string
          description: >
            OCI image reference for the buildpack artifact, including digest,
            for example `docker.io/paketobuildpacks/nodejs@sha256:...`.
        description:
          type: string
        homepage:
          type: string
          format: uri
        licenses:
          type: array
          items:
            type: string
        stacks:
          type: array
          description: Stacks this version declares support for (deprecated in favor of targets in buildpack API 0.12).
          items:
            type: string
        targets:
          type: array
          description: Targets this version declares support for (buildpack API >= 0.12).
          items:
            type: object
            properties:
              os:
                type: string
              arch:
                type: string
              variant:
                type: string
              distros:
                type: array
                items:
                  type: object
                  properties:
                    name:
                      type: string
                    version:
                      type: string
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time