SharedImageGalleryServiceClient

Name: SharedImageGalleryServiceClient API
Brand: Shared Image Gallery
Availability: InStock

★ Only Publicly Available OpenAPI DocumentCloud InfrastructureComputeoauth226 EndpointsREST

For Agents

Create Azure Compute Galleries, define custom VM images and gallery applications, and publish versioned artefacts replicated across regions.

Connect the SharedImageGalleryServiceClient to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the SharedImageGalleryServiceClient, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Install Jentic One Beta (Self-Hosted)

Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with SharedImageGalleryServiceClient API.

Create a Shared Image Gallery in a chosen Azure region

Define a custom VM image with OS type, hyperVGeneration, and identifier

Publish a new image version replicated across target regions

Define a gallery application that wraps an installer or script

GET STARTED

Start building with SharedImageGalleryServiceClient API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI document for SharedImageGalleryServiceClient, keeping it validated and agent-ready.

Jentic publishes the only available OpenAPI specification for SharedImageGalleryServiceClient, keeping it validated and agent-ready. The Azure Shared Image Gallery API (now Azure Compute Gallery) lets agents create galleries, register custom VM image and gallery application definitions, and publish versioned image and application artefacts that can be replicated across Azure regions and shared with other subscriptions or tenants. It models galleries, images, image versions, applications, and application versions under the Microsoft.Compute resource provider.

Use Cases

Patterns agents use SharedImageGalleryServiceClient API for, with concrete tasks.

★ Custom VM Image Distribution

Platform teams build hardened OS images and distribute them to engineering teams across regions through a central gallery. The galleries, images, and image versions endpoints accept the OS type, hyperVGeneration, source managed image ID, and target regions, so an agent can promote a baked image into the gallery and have it replicated automatically.

PUT a galleries/{galleryName}/images/{galleryImageName} resource with osType Windows, then PUT a versions/{galleryImageVersionName} with publishingProfile.targetRegions for westeurope and northeurope

Gallery Application Catalogue

DevOps teams maintain a catalogue of installer scripts that can be applied on top of any VM at deploy time. The applications and application versions endpoints store the install command, remove command, and the storage location of the package, so an agent can register a new tool or update its version without rebaking VM images.

PUT an applications/{galleryApplicationName} resource with supportedOSType Linux, then PUT a versions/{galleryApplicationVersionName} with publishingProfile.source.fileName and target regions

Image Inventory and Cleanup

FinOps and platform teams audit gallery contents periodically to find unused image versions and reclaim storage. The list endpoints at gallery, image, and version scope return every artefact with replication state and provisioning state, so an agent can build a report of stale versions older than a chosen date and delete them in bulk.

List galleries, then for each gallery list images and versions, returning galleryName, imageName, versionName, and replicationStatus.aggregatedState

AI Agent Image Promotion

An agent built on Jentic accepts a request to promote a tested managed image into the gallery for production use. It reads the source managed image, creates the image definition if missing, publishes the new version, sets target regions, and reports back the replication state — without the user opening the Azure portal.

Search Jentic for publish image version to azure shared image gallery, load the schema, and PUT a galleryImageVersion with the source managed image ID and the chosen target regions

Key Endpoints

26 endpoints — jentic publishes the only available openapi specification for sharedimagegalleryserviceclient, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}

Create or update a Shared Image Gallery

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/images/{galleryImageName}

Define a custom VM image under a gallery

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/images/{galleryImageName}/versions/{galleryImageVersionName}

Publish a new image version with target regions

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/applications/{galleryApplicationName}

Define a gallery application

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/applications/{galleryApplicationName}/versions/{galleryApplicationVersionName}

Publish a new gallery application version

GET

/subscriptions/{subscriptionId}/providers/Microsoft.Compute/galleries

List all galleries in a subscription

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}

Create or update a Shared Image Gallery

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/images/{galleryImageName}

Define a custom VM image under a gallery

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/images/{galleryImageName}/versions/{galleryImageVersionName}

Publish a new image version with target regions

PUT

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/galleries/{galleryName}/applications/{galleryApplicationName}

Define a gallery application

Why though Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Azure AD service principal credentials sit encrypted in the Jentic vault. Agents receive a short-lived bearer token scoped to user_impersonation — raw secrets never enter the agent context, which matters when image references include managed-identity-bound storage URLs.

Intent-based discovery

Agents search Jentic by intent such as publish azure image version or create shared image gallery and Jentic returns the matching Microsoft.Compute galleries operation with its full input schema.

Time to first call

Direct integration with the galleries ARM endpoints: 1-2 days for AAD setup, async replication polling, and ARM error retries. Through Jentic: under 1 hour — search, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Complementary

Azure Compute Management

Provisions VMs from gallery image versions

Use Compute Management when the agent needs to spin up a VM from an image version published by this gallery API

Complementary

Azure Image Builder

Builds and bakes the managed image that gets pushed into the gallery

Use Image Builder upstream of the gallery to build images automatically; use this API to publish them

Alternative

Amazon EC2 (AMIs)

AWS Amazon Machine Images (AMIs) for cross-region image distribution

Use EC2 AMIs when the platform is AWS rather than Azure

FAQs

Specific to using SharedImageGalleryServiceClient API through Jentic.

Why is there no official OpenAPI spec for SharedImageGalleryServiceClient?

Microsoft Azure does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call SharedImageGalleryServiceClient via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the Shared Image Gallery API use?

It uses Azure AD OAuth 2.0 with the implicit flow against https://login.microsoftonline.com/common/oauth2/authorize and the user_impersonation scope. When called through Jentic, your service principal credentials live in the Jentic vault and the agent receives only a short-lived bearer token scoped to the subscription it is acting on.

Can I publish a custom VM image with this API?

Yes. PUT a galleries/{galleryName}/images/{galleryImageName} resource to define the image (OS type, identifier, hyperVGeneration), then PUT a versions/{galleryImageVersionName} with the source managed image ID and a publishingProfile.targetRegions list to replicate it across regions.

How do gallery applications differ from gallery images?

An image version captures a full VM disk; a gallery application packages an installer or script that gets applied on top of any base VM at deploy time. Use applications/{galleryApplicationName}/versions for tools and agents that should be layered onto multiple base images.

What are the rate limits for this API?

Azure Resource Manager throttles around 12,000 reads and 1,200 writes per hour per principal at subscription scope, surfaced via x-ms-ratelimit-remaining-subscription-reads and x-ms-ratelimit-remaining-subscription-writes. Image version publishes are async — the 202 response includes an asyncOperation URL to poll for replication progress.

How do I publish an image version through Jentic?

Search Jentic for publish image version to azure shared image gallery, load the schema for PUT /.../galleries/{galleryName}/images/{galleryImageName}/versions/{galleryImageVersionName}, and execute it with the source managed image ID and target regions. The Jentic Python SDK ships the search, load, execute pattern after pip install jentic.

Can I share a gallery across subscriptions?

Yes — galleries support direct sharing through Azure RBAC role assignments on the gallery resource. Newer API versions add Direct Shared Gallery and Community Gallery flavours; this 2019-07-01 API exposes the core gallery surface with subscription and tenant-level visibility through ARM permissions.