> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/continuous-delivery/use-continuous-delivery/ai-agents-deployment/aws-agent-core/agent-service.md).

# Agent service

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 AWS Agent Core, the Amazon Bedrock AgentCore runtime.

{% hint style="info" %}
Agent deployments are behind the feature flag `CDS_AGENT_RUNTIME_DEPLOYMENT`. Contact [Harness Support](mailto:support@harness.io) to enable the feature.
{% endhint %}

For prerequisites, go to [Before you begin](/continuous-delivery/use-continuous-delivery/ai-agents-deployment/aws-agent-core/overview.md#before-you-begin) on the overview.

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### Open Agent Services <a href="#open-agent-services" id="open-agent-services"></a>

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.

<figure><img src="/files/u19vTOe4d3sFYKdfcN2v" alt=""><figcaption><p>Click to view full size image</p></figcaption></figure>

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### Register an agent service <a href="#register-an-agent-service" id="register-an-agent-service"></a>

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

{/\* IMAGE PLACEHOLDER: Register an Agent panel with AWS Agent Core selected, showing Image URI and Execution Role ARN fields (register-agent-aws.png) \*/}

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 **AWS Agent Core** to deploy the agent to Amazon Bedrock AgentCore.
3. In **Image URI**, enter the Amazon ECR URI of the agent container image, for example `123456789012.dkr.ecr.us-east-1.amazonaws.com/agent:1.0.0`.
4. In **Execution Role ARN**, enter the IAM role the agent assumes at runtime, for example `arn:aws:iam::123456789012:role/AgentCore`. AgentCore uses this role to pull the image and run the agent.
5. (Optional) Add config variables. Go to [Add config variables](#add-config-variables) for details.
6. (Optional) Expand **Metadata** to add a description and tags.
7. Select **Save**.

#### Add config variables <a href="#add-config-variables" id="add-config-variables"></a>

Config variables pass configuration to the agent at runtime. They correspond to the parameters defined in your AgentCore CLI project files, specifically `agentcore/agentcore.json` (project and agent configuration) and `agentcore/aws-targets.json` (AWS account and region targets). When you deploy through Harness instead of running `agentcore deploy` locally, config variables are how you supply those same parameters at deploy time. Go to [Get started with the AgentCore CLI](https://docs.aws.amazon.com/bedrock-agentcore/latest/devguide/runtime-get-started-cli.html) to review the full set of supported parameters.

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.

{/\* IMAGE PLACEHOLDER: New Variable panel showing Type, Name, Value, required, and Description fields (new-variable.png) \*/}

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### Review an agent service <a href="#review-an-agent-service" id="review-an-agent-service"></a>

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 execution role ARN, and any config variables. You can edit the configuration from this tab.

{/\* IMAGE PLACEHOLDER: Agent service Configuration tab showing Identity, Target platform, Platform Config, and Config Variables (agent-service-configuration.png) \*/}

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.

{/\* IMAGE PLACEHOLDER: Agent service Summary tab showing About and the Deployments list (agent-service-summary.png) \*/}

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### Next steps <a href="#next-steps" id="next-steps"></a>

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

* [Environment](/continuous-delivery/use-continuous-delivery/ai-agents-deployment/aws-agent-core/environment.md)
* [Canary deployment](/continuous-delivery/use-continuous-delivery/ai-agents-deployment/aws-agent-core/canary-deployment.md)