# update_buy_request

Update editable draft fields on a Sanka Buy request.

Agent View of the PolicyLayer registry record for `update_buy_request`. HTML page: https://policylayer.com/tools/sankahq-sanka-mcp/update-buy-request

## Facts

- Tool: `update_buy_request`
- Server: Sanka MCP Server (`sankahq/sanka-mcp`) — https://policylayer.com/tools/sankahq-sanka-mcp.md
- Homepage: https://github.com/sankaHQ/sanka-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": "update_buy_request",
    "arguments": {}
  }
}
```

## Why update_buy_request is rated Medium

This tool modifies existing buy request records by updating draft fields. Since it targets draft fields specifically, the changes appear reversible and not destructive. However, given the financial context (purchase/procurement operations) and the potential to alter purchase obligations before approval, this rates medium severity.

From the tool's own definition: "Tool name 'update_buy_request' and description 'Update editable draft fields on a Sanka Buy request' indicate modification of purchase request data. The term 'update' combined with 'draft fields' shows reversible data changes."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Sanka MCP Server (348)

- `cancel_buy_request` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/cancel-buy-request.md
- `cancel_export_job` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/cancel-export-job.md
- `cancel_import_job` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/cancel-import-job.md
- `cancel_workspace_invitation` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/cancel-workspace-invitation.md
- `delete_absence` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-absence.md
- `delete_approval_rule` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-approval-rule.md
- `delete_association` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-association.md
- `delete_attendance_record` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-attendance-record.md
- `delete_bill` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-bill.md
- `delete_company` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-company.md
- `delete_contact` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-contact.md
- `delete_deal` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-deal.md
- `delete_delivery_rule` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-delivery-rule.md
- `delete_disbursement` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-disbursement.md
- `delete_disbursement_allocation` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-disbursement-allocation.md
- `delete_estimate` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-estimate.md
- `delete_expense` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-expense.md
- `delete_ferry_diagram` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-ferry-diagram.md
- `delete_ferry_todo` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-ferry-todo.md
- `delete_inventory` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-inventory.md
- `delete_inventory_transaction` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-inventory-transaction.md
- `delete_invoice` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-invoice.md
- `delete_item` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-item.md
- `delete_location` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-location.md
- `delete_lock_rule` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-lock-rule.md
- `delete_order` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-order.md
- `delete_payment` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-payment.md
- `delete_project` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-project.md
- `delete_property` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-property.md
- `delete_purchase_order` — Destructive — https://policylayer.com/tools/sankahq-sanka-mcp/delete-purchase-order.md
- …and 318 more: https://policylayer.com/tools/sankahq-sanka-mcp.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=sankahq-sanka-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/sankahq-sanka-mcp