# formation_set_shareholder_tax_identifier

Files one shareholder's Social Security Number or ITIN against a formation. The whole number goes to the secret store and only its last four digits are recorded, which is all the response returns. Ask the person for it directly, pass it once, and never repeat it back in your own message. No tool reads the number out again.

Agent View of the PolicyLayer registry record for `formation_set_shareholder_tax_identifier`. HTML page: https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/formation-set-shareholder-tax-identifier

## Facts

- Tool: `formation_set_shareholder_tax_identifier`
- Server: Lovie Company Formation MCP (`lovie`) — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx.md
- Install: `npx -y lovie`
- Homepage: https://github.com/lovieco/lovie-company-formation-mcp-npx
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 3 (2 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `formationId` | object | yes | UUID value wrapper. |
| `shareholderId` | object | yes | UUID value wrapper. |
| `taxIdentifier` | string | no |  |

Parameters from the server's own tool schema.

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

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

## Why formation_set_shareholder_tax_identifier is rated Medium

An AI agent can call formation_set_shareholder_tax_identifier faster than any human can review: one bad instruction and it creates or modifies resources in Lovie Company Formation MCP by the hundred, each call as confident as the last.

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Lovie Company Formation MCP (339)

- `accounting_cancel_schedule` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/accounting-cancel-schedule.md
- `accounting_confirm_statement_match` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/accounting-confirm-statement-match.md
- `accounting_delete_journal_entry` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/accounting-delete-journal-entry.md
- `cap_table_clear_cap_table_stakeholders` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-clear-cap-table-stakeholders.md
- `cap_table_close_cap_table_round` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-close-cap-table-round.md
- `cap_table_delete_cap_table_agreement` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-delete-cap-table-agreement.md
- `cap_table_delete_cap_table_round` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-delete-cap-table-round.md
- `cap_table_delete_cap_table_security` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-delete-cap-table-security.md
- `cap_table_delete_cap_table_stakeholder` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-delete-cap-table-stakeholder.md
- `cap_table_set_cap_table_pipeline_status` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-set-cap-table-pipeline-status.md
- `documents_delete_saved_signature` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/documents-delete-saved-signature.md
- `formation_delete_pending_domain` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/formation-delete-pending-domain.md
- `formation_remove_shareholder` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/formation-remove-shareholder.md
- `signature_void_envelope` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/signature-void-envelope.md
- `trademark_delete_application` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/trademark-delete-application.md
- `vendor_bill_cancel_vendor_bill` — Destructive — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/vendor-bill-cancel-vendor-bill.md
- `accounting_propose_schedules` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/accounting-propose-schedules.md
- `ads_insight_summarize_campaign_window` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/ads-insight-summarize-campaign-window.md
- `banking_refresh_owner_verification` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/banking-refresh-owner-verification.md
- `banking_start_banking_application` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/banking-start-banking-application.md
- `cap_table_record_cap_table_investment` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-record-cap-table-investment.md
- `cap_table_simulate_cap_table_exit` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/cap-table-simulate-cap-table-exit.md
- `draft_payment` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/draft-payment.md
- `equity_onboarding_start` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/equity-onboarding-start.md
- `formation_run_election83b_reminders` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/formation-run-election83b-reminders.md
- `formation_start_formation` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/formation-start-formation.md
- `kyc_start_kyc_inquiry` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/kyc-start-kyc-inquiry.md
- `signature_reconcile_document_state` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/signature-reconcile-document-state.md
- `signature_run_reminders` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/signature-run-reminders.md
- `trademark_run_clearance` — Execute — https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx/trademark-run-clearance.md
- …and 309 more: https://policylayer.com/tools/lovieco-lovie-company-formation-mcp-npx.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=lovieco-lovie-company-formation-mcp-npx · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/lovieco-lovie-company-formation-mcp-npx