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

# Delete Agent Variable

> Delete an environment variable from an agent.

### Overview

Removes one variable from one of the agent's environments. If the variable was saved with `is_secret`, the stored secret is deleted with it. The request succeeds even when no variable with that key exists. Calls that run as this environment and still reference `{{env.KEY}}` fail until the variable is set again with [Set Agent Variable](/api-v2/put/agents-id-environments-env-variables-key).

Requires an admin, owner, operator, or prompter role.

### Headers

<ParamField header="authorization" type="string" required>
  Your API key for authentication.
</ParamField>

### Path Parameters

<ParamField path="agent_id" type="string" required>
  The agent's unique identifier.
</ParamField>

<ParamField path="env" type="string" required>
  One of `dev`, `staging`, `production`. Any other value returns `400 INVALID_ENV`.
</ParamField>

<ParamField path="key" type="string" required>
  The variable key to remove, matched exactly after trimming surrounding whitespace.
</ParamField>

### Response

<ResponseField name="data.deleted" type="boolean">
  Always `true` on success, whether or not a variable with that key existed.
</ResponseField>

<ResponseField name="errors" type="null | array">
  `null` on success, or a list of error objects if the request failed.
</ResponseField>

<ResponseExample>
  ```json Response theme={null}
  {
    "data": {
      "deleted": true
    },
    "errors": null
  }
  ```

  ```json Invalid Env theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "INVALID_ENV",
        "message": "env must be one of: dev, staging, production"
      }
    ]
  }
  ```

  ```json Not Found theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "NOT_FOUND",
        "message": "Agent not found"
      }
    ]
  }
  ```
</ResponseExample>

***

Docs for agents: [llms.txt](/llms.txt)