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bulk_transfer_ens_names

Transfer multiple ENS names in a single transaction via Multicall3 — bulk send. Much cheaper and faster than transferring names one at a time. Supports up to 20 names per batch. Automatically detects whether each name is wrapped (NameWrapper/ERC-1155) or unwrapped (BaseRegistrar/ERC-721) and buil...

Part of the Name Whisper server.

bulk_transfer_ens_names can move real money through Name Whisper, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents use bulk_transfer_ens_names to initiate financial transactions through Name Whisper. Financial operations involve real money and are irreversible once processed. PolicyLayer blocks financial tools by default, requiring explicit human approval with transaction-level limits to prevent unauthorised spending.

bulk_transfer_ens_names moves real money. Without a policy, an autonomous agent could initiate transactions that drain accounts or exceed budgets. PolicyLayer blocks financial tools by default, requiring human-in-the-loop approval with configurable spending limits per transaction and per time window.

Financial tools involve real money. Block by default and require explicit human approval before enabling.

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

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These attack patterns abuse exactly the kind of access bulk_transfer_ens_names gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so bulk_transfer_ens_names only ever does what you allow.

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Other financial tools across the catalogue. The same approach applies to each: deny by default, or require human approval.

What does the bulk_transfer_ens_names tool do? +

Transfer multiple ENS names in a single transaction via Multicall3 — bulk send. Much cheaper and faster than transferring names one at a time. Supports up to 20 names per batch. Automatically detects whether each name is wrapped (NameWrapper/ERC-1155) or unwrapped (BaseRegistrar/ERC-721) and builds the correct transfer call for each. All names can go to the same recipient or to different recipients — specify a toAddress per name. Requirements: - The fromAddress must currently own ALL names in the batch - All addresses must be valid Ethereum addresses - Names must be registered (not expired) WARNING: This transfers FULL ownership of every name. Recipients gain complete control. Resolver records (avatar, addresses, etc.) are NOT affected by transfer — they stay on each name. After transfer, consider using bulk_set_records to update ETH address records on the transferred names.. It is categorised as a Financial tool in the Name Whisper MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on bulk_transfer_ens_names? +

Register the Name Whisper MCP server in PolicyLayer and add a rule for bulk_transfer_ens_names: 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 Name Whisper. Nothing to install.

What risk level is bulk_transfer_ens_names? +

bulk_transfer_ens_names 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 bulk_transfer_ens_names? +

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

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

bulk_transfer_ens_names is provided by the Name Whisper MCP server (namewhisper/ens-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Name Whisper tool call.

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