Helm ChartMuseum API
Extended API endpoints provided by ChartMuseum and compatible chart repository servers for JSON-based chart management.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Helm Chart Repository Chart Museum API
description: The Helm Chart Repository API defines the HTTP endpoints used by Helm clients to discover and download charts from a repository server. A chart repository is an HTTP server that houses an index.yaml file listing all available charts and optionally packaged chart archives (.tgz files). ChartMuseum and compatible implementations extend this with a JSON-based management API for listing, uploading, and deleting charts programmatically.
version: v3.17.0
contact:
name: Helm Project
url: https://helm.sh
license:
name: Apache 2.0
url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: https://{repository-host}
description: Helm Chart Repository Server
variables:
repository-host:
default: charts.example.com
description: The hostname of the chart repository
tags:
- name: ChartMuseum
description: Extended API endpoints provided by ChartMuseum and compatible chart repository servers for JSON-based chart management.
paths:
/api/charts:
get:
operationId: listAllCharts
summary: Helm List all charts
description: Returns a list of all charts available in the repository grouped by chart name. This endpoint is provided by ChartMuseum and other enhanced chart repository implementations supporting JSON-based management.
tags:
- ChartMuseum
responses:
'200':
description: Chart list returned successfully
content:
application/json:
schema:
type: object
description: Map of chart names to their available versions.
additionalProperties:
type: array
items:
$ref: '#/components/schemas/ChartVersion'
'401':
description: Unauthorized
post:
operationId: uploadChart
summary: Helm Upload chart package
description: Uploads a new chart package to the repository. This endpoint is provided by ChartMuseum and other writable chart repository implementations. The chart archive is sent as multipart form data or as a raw binary body.
tags:
- ChartMuseum
requestBody:
required: true
content:
multipart/form-data:
schema:
type: object
properties:
chart:
type: string
format: binary
description: The chart package archive (.tgz file)
prov:
type: string
format: binary
description: Optional PGP provenance file (.tgz.prov)
responses:
'201':
description: Chart uploaded successfully
content:
application/json:
schema:
type: object
properties:
saved:
type: boolean
description: Whether the chart was saved successfully
example: true
'401':
description: Unauthorized
'409':
description: Chart version already exists
/api/charts/{chartName}:
get:
operationId: getChartVersions
summary: Helm Get chart versions
description: Returns all available versions for a specific chart. This endpoint is provided by ChartMuseum and other enhanced chart repository implementations.
tags:
- ChartMuseum
parameters:
- $ref: '#/components/parameters/ChartName'
responses:
'200':
description: Chart versions returned successfully
content:
application/json:
schema:
type: array
items:
$ref: '#/components/schemas/ChartVersion'
'401':
description: Unauthorized
'404':
description: Chart not found
/api/charts/{chartName}/{version}:
get:
operationId: getChartVersion
summary: Helm Get specific chart version
description: Returns metadata for a specific version of a named chart. This endpoint is provided by ChartMuseum and other enhanced chart repository implementations.
tags:
- ChartMuseum
parameters:
- $ref: '#/components/parameters/ChartName'
- $ref: '#/components/parameters/Version'
responses:
'200':
description: Chart version metadata returned successfully
content:
application/json:
schema:
$ref: '#/components/schemas/ChartVersion'
'401':
description: Unauthorized
'404':
description: Chart version not found
delete:
operationId: deleteChartVersion
summary: Helm Delete chart version
description: Deletes a specific version of a chart from the repository. This endpoint is provided by ChartMuseum and other writable chart repository implementations.
tags:
- ChartMuseum
parameters:
- $ref: '#/components/parameters/ChartName'
- $ref: '#/components/parameters/Version'
responses:
'200':
description: Chart version deleted successfully
content:
application/json:
schema:
type: object
properties:
deleted:
type: boolean
description: Whether the chart version was deleted
example: true
'401':
description: Unauthorized
'404':
description: Chart version not found
/api/prov:
post:
operationId: uploadProvenance
summary: Helm Upload provenance file
description: Uploads a PGP provenance file to the repository independently of a chart package. This endpoint is provided by ChartMuseum for cases where chart and provenance files are uploaded separately.
tags:
- ChartMuseum
requestBody:
required: true
content:
multipart/form-data:
schema:
type: object
properties:
prov:
type: string
format: binary
description: The PGP provenance file (.tgz.prov)
responses:
'201':
description: Provenance file uploaded successfully
content:
application/json:
schema:
type: object
properties:
saved:
type: boolean
description: Whether the provenance file was saved
example: true
'401':
description: Unauthorized
'409':
description: Provenance file already exists
components:
parameters:
Version:
name: version
in: path
required: true
description: The SemVer 2 version of the chart
schema:
type: string
example: 1.2.3
ChartName:
name: chartName
in: path
required: true
description: The name of the chart
schema:
type: string
example: nginx
schemas:
Maintainer:
type: object
description: Contact information for a chart maintainer.
required:
- name
properties:
name:
type: string
description: The maintainer name.
email:
type: string
format: email
description: The maintainer email address.
url:
type: string
format: uri
description: The maintainer URL.
Dependency:
type: object
description: A chart dependency specifying another chart required by this chart.
required:
- name
- version
properties:
name:
type: string
description: The name of the dependency chart.
version:
type: string
description: The SemVer range for the dependency version.
repository:
type: string
format: uri
description: The URL of the chart repository where the dependency is hosted.
condition:
type: string
description: A YAML path that resolves to a boolean to enable or disable the dependency.
tags:
type: array
items:
type: string
description: Tags used to group dependencies for enable/disable.
alias:
type: string
description: Alias name for the dependency chart.
ChartVersion:
type: object
description: Metadata describing a specific version of a Helm chart as it appears in the repository index.
required:
- apiVersion
- name
- version
properties:
apiVersion:
type: string
description: The chart API version (v1 for Helm 2, v2 for Helm 3).
enum:
- v1
- v2
example: v2
name:
type: string
description: The name of the chart.
example: nginx
version:
type: string
description: The SemVer 2 version of the chart.
example: 1.2.3
kubeVersion:
type: string
description: A SemVer range of compatible Kubernetes versions.
example: '>= 1.19.0'
description:
type: string
description: A single-sentence description of the chart.
type:
type: string
description: The type of chart — application for installable charts, library for utility charts.
enum:
- application
- library
default: application
keywords:
type: array
items:
type: string
description: Keywords associated with the chart for search and categorization.
home:
type: string
format: uri
description: The URL of the project home page.
sources:
type: array
items:
type: string
format: uri
description: URLs to source code for the chart.
maintainers:
type: array
items:
$ref: '#/components/schemas/Maintainer'
description: List of chart maintainers.
icon:
type: string
format: uri
description: URL to an SVG or PNG icon for the chart.
appVersion:
type: string
description: The version of the application contained in the chart.
example: 1.21.0
deprecated:
type: boolean
description: Whether this chart version is deprecated.
default: false
annotations:
type: object
additionalProperties:
type: string
description: Annotations are key-value pairs used by Artifact Hub and other tools for additional metadata.
urls:
type: array
items:
type: string
format: uri
description: Download URLs for the chart package.
created:
type: string
format: date-time
description: Timestamp when this version was added to the index.
digest:
type: string
description: SHA-256 digest of the chart package for integrity verification.
example: sha256:abc123def456
dependencies:
type: array
items:
$ref: '#/components/schemas/Dependency'
description: List of chart dependencies declared in Chart.yaml.
externalDocs:
description: Helm Chart Repository Guide
url: https://helm.sh/docs/topics/chart_repository/