# reject_supplier_invoice

Reject a supplier invoice. A comment is required.

Agent View of the PolicyLayer registry record for `reject_supplier_invoice`. HTML page: https://policylayer.com/tools/adriantr-tripletex-mcp/reject-supplier-invoice

## Facts

- Tool: `reject_supplier_invoice`
- Server: Tripletex MCP Server (`adriantr/tripletex-mcp`) — https://policylayer.com/tools/adriantr-tripletex-mcp.md
- Homepage: https://github.com/adriantr/tripletex-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why reject_supplier_invoice is rated Medium

Rejecting a supplier invoice is a Write operation because it updates the invoice record's status and processing state. While the action affects financial workflows and accounting records, it is reversible—rejected invoices can typically be resubmitted or the rejection can be overturned by a human accountant.

From the tool's own definition: "Tool name 'reject_supplier_invoice' and description 'Reject a supplier invoice' indicate the tool modifies the state of a supplier invoice (from pending/submitted to rejected status). This is a reversible state change, not a deletion."

## Use case

AI agents use reject_supplier_invoice to create or update resources in Tripletex MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Tripletex MCP Server environment.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "reject_supplier_invoice": {
      "limits": [
        {
          "counter": "reject_supplier_invoice_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Tripletex MCP Server (30)

- `delete_timesheet_entry` — Destructive — https://policylayer.com/tools/adriantr-tripletex-mcp/delete-timesheet-entry.md
- `approve_supplier_invoice` — Financial — https://policylayer.com/tools/adriantr-tripletex-mcp/approve-supplier-invoice.md
- `get_current_time_clock` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-current-time-clock.md
- `get_invoice` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-invoice.md
- `get_recent_activities` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-recent-activities.md
- `get_recent_projects` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-recent-projects.md
- `get_supplier_invoice` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-supplier-invoice.md
- `get_supplier_invoices_for_approval` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-supplier-invoices-for-approval.md
- `get_timesheet_entry` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-timesheet-entry.md
- `get_timesheet_month` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-timesheet-month.md
- `get_total_hours` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/get-total-hours.md
- `search_activities` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/search-activities.md
- `search_invoices` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/search-invoices.md
- `search_projects` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/search-projects.md
- `search_supplier_invoices` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/search-supplier-invoices.md
- `search_timesheet_entries` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/search-timesheet-entries.md
- `search_timesheet_weeks` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/search-timesheet-weeks.md
- `whoami` — Read — https://policylayer.com/tools/adriantr-tripletex-mcp/whoami.md
- `approve_supplier_invoices` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/approve-supplier-invoices.md
- `approve_timesheet_month` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/approve-timesheet-month.md
- `approve_timesheet_week` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/approve-timesheet-week.md
- `complete_timesheet_month` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/complete-timesheet-month.md
- `complete_timesheet_week` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/complete-timesheet-week.md
- `create_timesheet_entry` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/create-timesheet-entry.md
- `reject_supplier_invoices` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/reject-supplier-invoices.md
- `reopen_timesheet_month` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/reopen-timesheet-month.md
- `reopen_timesheet_week` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/reopen-timesheet-week.md
- `start_time_clock` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/start-time-clock.md
- `stop_time_clock` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/stop-time-clock.md
- `update_timesheet_entry` — Write — https://policylayer.com/tools/adriantr-tripletex-mcp/update-timesheet-entry.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=adriantr-tripletex-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/adriantr-tripletex-mcp