# delete_application_env

Delete an environment variable from an application.

Agent View of the PolicyLayer registry record for `delete_application_env`. HTML page: https://policylayer.com/tools/coolify/delete-application-env

## Facts

- Tool: `delete_application_env`
- Server: Coolify (`coolify-mcp-server`) — https://policylayer.com/tools/coolify.md
- Install: `npx -y coolify-mcp-server`
- Homepage: git+https://github.com/wrediam/coolify-mcp-server.git
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "delete_application_env",
    "arguments": {}
  }
}
```

## Why delete_application_env is rated Critical

Deletion of environment variables is an irreversible operation that cannot be undone without recreation. Environment variables often contain critical configuration, secrets, or feature flags. Removing them can break application functionality, disable security controls, or expose the application to errors. This falls under Destructive rather than Write because the action cannot be reversed through normal operations.

From the tool's own definition: "Tool name 'delete_application_env' explicitly uses 'delete', and description states 'Delete an environment variable from an application' — this irreversibly removes configuration data."

## Use case

AI agents call delete_application_env to permanently remove resources in Coolify, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

Verdict: **Hidden**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Coolify:

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_application_env"
  ]
}
```

## Other tools on Coolify (110)

- `delete_application` — Destructive — https://policylayer.com/tools/coolify/delete-application.md
- `delete_application_scheduled_task` — Destructive — https://policylayer.com/tools/coolify/delete-application-scheduled-task.md
- `delete_application_storage` — Destructive — https://policylayer.com/tools/coolify/delete-application-storage.md
- `delete_cloud_token` — Destructive — https://policylayer.com/tools/coolify/delete-cloud-token.md
- `delete_database` — Destructive — https://policylayer.com/tools/coolify/delete-database.md
- `delete_database_env` — Destructive — https://policylayer.com/tools/coolify/delete-database-env.md
- `delete_environment` — Destructive — https://policylayer.com/tools/coolify/delete-environment.md
- `delete_github_app` — Destructive — https://policylayer.com/tools/coolify/delete-github-app.md
- `delete_private_key` — Destructive — https://policylayer.com/tools/coolify/delete-private-key.md
- `delete_project` — Destructive — https://policylayer.com/tools/coolify/delete-project.md
- `delete_server` — Destructive — https://policylayer.com/tools/coolify/delete-server.md
- `delete_service` — Destructive — https://policylayer.com/tools/coolify/delete-service.md
- `delete_service_env` — Destructive — https://policylayer.com/tools/coolify/delete-service-env.md
- `delete_service_scheduled_task` — Destructive — https://policylayer.com/tools/coolify/delete-service-scheduled-task.md
- `disable_api` — Destructive — https://policylayer.com/tools/coolify/disable-api.md
- `cancel_deployment` — Execute — https://policylayer.com/tools/coolify/cancel-deployment.md
- `deploy_by_tag_or_uuid` — Execute — https://policylayer.com/tools/coolify/deploy-by-tag-or-uuid.md
- `enable_api` — Execute — https://policylayer.com/tools/coolify/enable-api.md
- `restart_application` — Execute — https://policylayer.com/tools/coolify/restart-application.md
- `restart_database` — Execute — https://policylayer.com/tools/coolify/restart-database.md
- `restart_service` — Execute — https://policylayer.com/tools/coolify/restart-service.md
- `start_application` — Execute — https://policylayer.com/tools/coolify/start-application.md
- `start_database` — Execute — https://policylayer.com/tools/coolify/start-database.md
- `start_service` — Execute — https://policylayer.com/tools/coolify/start-service.md
- `stop_application` — Execute — https://policylayer.com/tools/coolify/stop-application.md
- `stop_database` — Execute — https://policylayer.com/tools/coolify/stop-database.md
- `stop_service` — Execute — https://policylayer.com/tools/coolify/stop-service.md
- `get_application` — Read — https://policylayer.com/tools/coolify/get-application.md
- `get_application_logs` — Read — https://policylayer.com/tools/coolify/get-application-logs.md
- `get_current_team` — Read — https://policylayer.com/tools/coolify/get-current-team.md
- …and 80 more: https://policylayer.com/tools/coolify.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=coolify · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/coolify