# list_invoices

List billing invoices for the account. Returns invoice details including amounts, status, and download URLs.

Agent View of the PolicyLayer registry record for `list_invoices`. HTML page: https://policylayer.com/tools/trekmail-mcp-server/list-invoices

## Facts

- Tool: `list_invoices`
- Server: TrekMail MCP Server (`trekmail/mcp-server`) — https://policylayer.com/tools/trekmail-mcp-server.md
- Homepage: https://github.com/trekmail/mcp-server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why list_invoices is rated Low

This tool retrieves and queries existing invoice data without any side effects. It does not create, modify, delete, or execute operations—it merely fetches invoice details. While invoices are financial documents, the tool itself only reads them; it does not move money or commit financial obligations.

From the tool's own definition: "Tool name 'list_invoices' and description 'List billing invoices for the account. Returns invoice details including amounts, status, and download URLs' indicate a retrieval operation with no modification of data."

## Use case

AI agents call list_invoices to retrieve information from TrekMail MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_invoices": {}
  }
}
```

## Other tools on TrekMail MCP Server (247)

- `bulk_action` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/bulk-action.md
- `cancel_bulk_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/cancel-bulk-migration.md
- `cancel_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/cancel-migration.md
- `cancel_scheduled` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/cancel-scheduled.md
- `change_mailbox_password` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/change-mailbox-password.md
- `confirm_delete_intent` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/confirm-delete-intent.md
- `create_delete_intent` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/create-delete-intent.md
- `delete_alias` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-alias.md
- `delete_bulk_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-bulk-migration.md
- `delete_calendar_event` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-calendar-event.md
- `delete_cloudflare_token` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-cloudflare-token.md
- `delete_contact` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-contact.md
- `delete_contact_group` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-contact-group.md
- `delete_domain` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-domain.md
- `delete_domain_smtp_profile` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-domain-smtp-profile.md
- `delete_external_account` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-external-account.md
- `delete_folder` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-folder.md
- `delete_forwarding_address` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-forwarding-address.md
- `delete_identity` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-identity.md
- `delete_mail_rule` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-mail-rule.md
- `delete_message` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-message.md
- `delete_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-migration.md
- `delete_smtp_connection` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-smtp-connection.md
- `delete_template` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-template.md
- `drive_bulk_purge` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-bulk-purge.md
- `drive_bulk_trash` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-bulk-trash.md
- `drive_device_revoke` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-device-revoke.md
- `drive_file_purge` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-file-purge.md
- `drive_file_trash` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-file-trash.md
- `drive_folder_purge` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-folder-purge.md
- …and 217 more: https://policylayer.com/tools/trekmail-mcp-server.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`

---

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