# granite_withdraw

Withdraw supplied assets plus earned interest

Agent View of the PolicyLayer registry record for `granite_withdraw`. HTML page: https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/granite-withdraw

## Facts

- Tool: `granite_withdraw`
- Server: Stacks AI MCP Server (`stack-ai-mcp/stacks-mcp-server`) — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server.md
- Homepage: https://github.com/Stack-AI-MCP/stacks-mcp-server
- Risk category: Financial (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Approval-gated

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

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

## Why granite_withdraw is rated Critical

This tool directly moves money (cryptocurrency assets and earned interest) from a smart contract back to a user's wallet. It commits financial obligations and transfers value, matching the Financial category definition of 'moves money or commits financial obligations.' While the specific user initiating the withdrawal should theoretically be the owner of those assets, an AI agent with access to this tool could…

From the tool's own definition: "The tool 'granite_withdraw' is described as enabling withdrawal of 'supplied assets plus earned interest' from what appears to be a lending protocol (Granite) on the Stacks DeFi ecosystem. This involves moving cryptocurrency assets and accrued financial gains."

## Use case

AI agents use granite_withdraw to commit financial operations through Stacks AI MCP Server, usually the final step of a payment, billing, or trading workflow. A call moves real money.

## Recommended policy (PolicyLayer)

Verdict: **Approval-gated**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Stacks AI MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "granite_withdraw": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}
```

## Other tools on Stacks AI MCP Server (199)

- `arkadiko_burn_usda` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-burn-usda.md
- `bitflow_cancel_group_order` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-cancel-group-order.md
- `bitflow_cancel_keeper_order` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-cancel-keeper-order.md
- `charisma_cancel_order` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-cancel-order.md
- `charisma_revoke_api_key` — Destructive — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-revoke-api-key.md
- `alex_execute_swap_3hop` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap-3hop.md
- `arkadiko_create_proposal` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-create-proposal.md
- `broadcast_transaction` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/broadcast-transaction.md
- `charisma_execute_intent` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-execute-intent.md
- `charisma_execute_order` — Execute — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-execute-order.md
- `alex_execute_swap` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap.md
- `alex_execute_swap_2hop` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap-2hop.md
- `alex_execute_swap_4hop` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/alex-execute-swap-4hop.md
- `arkadiko_add_liquidity` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-add-liquidity.md
- `arkadiko_claim_staking_rewards` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-claim-staking-rewards.md
- `arkadiko_close_vault` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-close-vault.md
- `arkadiko_complete_cdp_workflow` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-complete-cdp-workflow.md
- `arkadiko_complete_governance_workflow` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-complete-governance-workflow.md
- `arkadiko_create_vault` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-create-vault.md
- `arkadiko_stake_diko` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-stake-diko.md
- `arkadiko_swap_tokens` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-swap-tokens.md
- `bitflow_create_group_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-create-group-order.md
- `bitflow_create_keeper_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-create-keeper-order.md
- `bitflow_execute_btc_to_sbtc_keeper_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-execute-btc-to-sbtc-keeper-order.md
- `bitflow_execute_token_swap_with_keeper` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-execute-token-swap-with-keeper.md
- `bitflow_setup_dca_orders` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/bitflow-setup-dca-orders.md
- `charisma_complete_swap_workflow` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-complete-swap-workflow.md
- `charisma_create_order` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-create-order.md
- `charisma_execute_multihop_swap` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/charisma-execute-multihop-swap.md
- `granite_add_collateral` — Financial — https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/granite-add-collateral.md
- …and 169 more: https://policylayer.com/tools/stack-ai-mcp-stacks-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=stack-ai-mcp-stacks-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/stack-ai-mcp-stacks-mcp-server