# arkadiko_update_vault

Update existing Arkadiko vault by adjusting collateral or debt

Agent View of the PolicyLayer registry record for `arkadiko_update_vault`. HTML page: https://policylayer.com/tools/stack-ai-mcp-stacks-mcp-server/arkadiko-update-vault

## Facts

- Tool: `arkadiko_update_vault`
- 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: 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": "arkadiko_update_vault",
    "arguments": {}
  }
}
```

## Why arkadiko_update_vault is rated Medium

This tool modifies an existing DeFi vault's collateral or debt positions on the Stacks blockchain. While it is reversible in principle (positions can be re-adjusted), incorrect adjustments could expose the vault to liquidation risk, making the blast radius high. It falls under Write as it modifies existing data rather than irreversibly deleting it or directly moving money.

From the tool's own definition: "Update existing Arkadiko vault by adjusting collateral or debt"

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. 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": {
    "arkadiko_update_vault": {
      "limits": [
        {
          "counter": "arkadiko_update_vault_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## 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`

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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