intentTransferFrom

THE RISK

Critical Risk

Why intentTransferFrom needs a policy

This tool moves cryptocurrency (ERC20 tokens) from one address to another. Even though it requires prior approval, the tool itself executes the transfer operation, which commits financial obligations and moves assets. This is a direct financial transaction. Severity is critical because unauthorized or erroneous transfers of cryptocurrency cannot be easily reversed on a blockchain and represent maximum financial risk.

From the tool's definition Tool name is 'intentTransferFrom' and description states it 'Transfer ERC20 tokens from another address using transferFrom'. ERC20 token transfers on Ethereum directly move cryptocurrency assets.

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

POLICY

How to control intentTransferFrom

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

policy.json

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

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

Create a free account and register Agentek Eth — 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

Related tools and policies

More Agentek Eth tools

Financial depositWETH Wrap native ETH into WETH (Wrapped ETH) by depositing into the WETH contract. You receive Financial intentAaveDeposit Deposits tokens into the Aave protocol to supply liquidity and earn interest. Financial intentAaveWithdraw Withdraws tokens from Aave, redeeming your supplied assets (aTokens). Financial intentApproveSlowTransfer Guardian approves a transfer in SLOW contract Financial intentDepositAcross Bridge ERC20 tokens cross-chain via Across Protocol. Automatically handles token approval Financial intentDepositToSlow Deposit tokens or ETH into SLOW contract with a timelock Financial intentTransfer Transfer ERC20 tokens or native ETH to an address or ENS name. Supports ENS resolution, au Financial intentTransferPosition Transfers ownership of a Uniswap V3 LP NFT to another address using safeTransferFrom.

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Go deeper

Critical-risk tools in Agentek Eth → 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.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about intentTransferFrom

What does the intentTransferFrom tool do? +

Transfer ERC20 tokens from another address using transferFrom. Requires prior ERC20 approval from the. It is categorised as a Financial tool in the Agentek Eth MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on intentTransferFrom? +

Register the Agentek Eth MCP server in PolicyLayer and add a rule for intentTransferFrom: 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 Agentek Eth. Nothing to install.

What risk level is intentTransferFrom? +

intentTransferFrom 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 intentTransferFrom? +

Yes. Add a rate_limit block to the intentTransferFrom 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 intentTransferFrom completely? +

Set action: deny in the PolicyLayer policy for intentTransferFrom. 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 intentTransferFrom? +

intentTransferFrom is provided by the Agentek Eth MCP server (nanidao/agentek). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Agentek Eth tool call.

Start from Agentek Eth, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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