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

# List Environment Variables

> List all environment variables for a project

Returns all environment variable keys for the specified project. Values are not included in the list response for security.

## Authentication

Requires a valid Bearer token.

## Path Parameters

<ParamField path="id" type="string" required>
  Project ID (UUID).
</ParamField>

## Response

<ResponseField name="env_vars" type="array">
  List of environment variable metadata.

  <Expandable title="Env var object">
    <ResponseField name="key" type="string" required>
      Environment variable name.
    </ResponseField>

    <ResponseField name="created_at" type="string" required>
      ISO 8601 timestamp.
    </ResponseField>

    <ResponseField name="updated_at" type="string" required>
      ISO 8601 timestamp.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseExample>
  ```json 200 theme={null}
  {
    "env_vars": [
      {
        "key": "DATABASE_URL",
        "created_at": "2025-01-15T10:30:00Z",
        "updated_at": "2025-01-15T10:30:00Z"
      },
      {
        "key": "API_SECRET",
        "created_at": "2025-01-15T10:31:00Z",
        "updated_at": "2025-01-15T10:31:00Z"
      }
    ]
  }
  ```
</ResponseExample>

## Errors

| Status | Description                                                  |
| ------ | ------------------------------------------------------------ |
| `401`  | Unauthorized — missing or invalid token                      |
| `404`  | Not Found — project does not exist or you do not have access |