> ## Documentation Index
> Fetch the complete documentation index at: https://astronomer.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Update environment variables with the APC API

<Note>
  The examples on this page show common ways to use the APC API — they're not a complete API reference. For the full, interactive API documentation for your installation, including every available query, mutation, and type, go to `https://houston.<your-base-domain>/v1`, and click on the **Docs** tab. See [Develop and test APC API queries](/docs/astro-private-cloud/v-2-x/houston-api-develop-test) for more on using the built-in GraphQL explorer.
</Note>

To programmatically update environment variables, you need:

* A Deployment ID. To retrieve this value, run `astro deployment list` or request the `id` value in the `workspaceDeployment` query.
* A Deployment release name: To retrieve this value, run `astro deployment list` in your Workspace. Alternatively, you can copy the **Release name** from your Deployment's **Settings** tab in the Astro Private Cloud UI.

Then, in your GraphQL Playground, run the following:

```graphql wrap theme={null}
mutation UpdateDeploymentVariables {
  updateDeploymentVariables(
    deploymentUuid: ID! = "<deployment-id>",
  	releaseName: String! = "<deployment-release-name>",
    environmentVariables: [
      {key: "<environment-variable-1>",
      value: "<environment-variable-value-1>",
      isSecret: <true-or-false>},
      {key: "<environment-variable-2>",
      value: "<environment-variable-value-2>",
      isSecret: <true-or-false>}
    ]
  ) {
    key
    value
    isSecret
  }
}
```