iota_wallet_sign_execute

THE RISK

Critical Risk

This tool signs and executes blockchain transactions on the IOTA network. Blockchain transactions can move funds/tokens irreversibly, making this Financial in nature. Even with human-in-the-loop approval, misuse could result in unauthorized fund transfers, irreversible asset movements, or execution of malicious smart contract calls.

From the tool's definition Sign and execute a transaction via the agent wallet

Documented attack patterns abuse exactly the kind of access iota_wallet_sign_execute gives an agent:

HOW TO CONTROL IOTA_WALLET_SIGN_EXECUTE

PolicyLayer is an MCP gateway — it sits between your AI agents and Iota Agent, and nothing reaches the server without passing your rules. This is the rule we recommend for iota_wallet_sign_execute:

policy.json

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

Any call to iota_wallet_sign_execute is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Iota Agent — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

More Iota Agent tools

Execute iota_cli Run an arbitrary IOTA CLI command. Use for operations not covered by other tools. Execute iota_move_build Build a Move package and report compilation results Execute iota_move_publish_unsigned Generate an unsigned publish transaction for a Move package (for agent wallet signing) Execute iota_move_test_coverage Run Move tests with coverage analysis. Returns test results and coverage summary. Write iota_wallet_approve Approve a pending signing request Write iota_wallet_reject Reject a pending signing request Write iota_wallet_switch_network Switch between mainnet, testnet, and devnet Read iota_decompile Retrieve and decompile a deployed Move module. Returns the module

All 18 Iota Agent tools →

Financial tools on other servers

Atv build_deposit_tx Bitcoin MCP Server pay_invoice AbraFlexi bank_transaction_create Hilanet MCP decrease_coworker_salary

Go deeper

Critical-risk tools in Iota Agent → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

What does the iota_wallet_sign_execute tool do? +

Sign and execute a transaction via the agent wallet (human-in-the-loop approval required). It is categorised as a Financial tool in the Iota Agent MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on iota_wallet_sign_execute? +

Register the Iota Agent MCP server in PolicyLayer and add a rule for iota_wallet_sign_execute: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Iota Agent. Nothing to install.

What risk level is iota_wallet_sign_execute? +

iota_wallet_sign_execute is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit iota_wallet_sign_execute? +

Yes. Add a rate_limit block to the iota_wallet_sign_execute rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block iota_wallet_sign_execute completely? +

Set action: deny in the PolicyLayer policy for iota_wallet_sign_execute. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides iota_wallet_sign_execute? +

iota_wallet_sign_execute is provided by the Iota Agent MCP server (scottcjn/iota-agent-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Iota Agent tool call.

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// WHAT IOTA_WALLET_SIGN_EXECUTE ON IOTA AGENT DOES

// THE RISK

// HOW TO CONTROL IOTA_WALLET_SIGN_EXECUTE

// EXPLORE