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Agent service

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An agent service represents a single AI agent in Harness CD. It defines the agent identity, the target runtime, the container image the agent runs from, and any configuration variables the agent needs at runtime. This page shows you how to register an agent service that deploys to Google Agent Runtime, the Vertex Agent Engine execution environment.

note

Agent deployments are behind the feature flag CDS_AGENT_RUNTIME_DEPLOYMENT. Contact Harness Support to enable the feature.

For prerequisites, go to Before you begin on the overview.

Open Agent Services​

Agent services live in the Continuous Delivery & GitOps module. Select Agent Services in the left navigation to open the listing page, which shows every agent service in the project. Use the search field to filter by name, and select any row to review or edit its configuration.

Register an agent service​

To register an agent service, select New Agent Service on the listing page and complete the Register an Agent panel.

  1. In Agent name, enter a name for the agent. Harness generates the agent Id from the name. Select the edit icon next to the Id to change it before you save.
  2. Under Deploy target, select Google Agent Runtime to deploy the agent to Vertex Agent Engine.
  3. In Image URI, enter the Artifact Registry URI of the agent container image. Build the URI in the format the Google container image method documents. Go to Deploy an agent (Google Cloud) to review the container image format.
  4. (Optional) Add config variables. Go to Add config variables for details.
  5. (Optional) Expand Metadata to add a description and tags.
  6. Select Save.

Add config variables​

Config variables pass configuration to the agent at runtime. Vertex Agent Runtime supports a set of optional parameters, and config variables are how you supply them from Harness. For the parameters the runtime accepts, go to Deploy an agent (Google Cloud).

To add a config variable, select Add variable and complete the panel:

  • Type: The variable type, either String, Number, or Secret. Plain values reach the agent environment as-is, and secret values resolve through the Harness secret manager at deploy time.
  • Name: The variable name.
  • Value: The variable value. For a secret, reference a Harness secret.
  • Set variable as required during runtime: Set to True to require a value at runtime.
  • Description: (Optional) A description of the variable.

Review an agent service​

Select an agent service from the listing page to open its details.

The Configuration tab shows the agent identity, the target platform and its settings, the platform config such as the image URI, and any config variables. You can edit the configuration from this tab.

The Summary tab shows the agent details and the list of deployments that reference this agent service across environments. Referenced by shows the pipelines and other entities that use the agent service.

Next steps​

After you register an agent service, configure the environment for Google Agent Runtime and build the deployment pipeline.