transfer_nft · SEI MCP Server V2 MCP: Risk & Policy

WHAT IT DOES

What transfer_nft does on SEI MCP Server V2

AI agents use transfer_nft to create or update resources in SEI MCP Server V2 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SEI MCP Server V2 environment.

WHY IT NEEDS A POLICY

Why transfer_nft needs a policy

This tool moves an NFT between addresses, which is a write operation that modifies on-chain ownership state. While it is reversible in theory (the recipient could transfer it back), unauthorized transfers could result in permanent loss of a valuable digital asset if the recipient is malicious or incorrect. The high severity reflects the potential for significant financial/asset loss if misused by an AI agent.

From the tool's definition Transfer an NFT (ERC721 token) from one address to another

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

transfer_nft Rate-limited

transfer_nft stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "transfer_nft": {
      "limits": [
        {
          "counter": "transfer_nft_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches SEI MCP Server V2, so you can run agents against it safely.

FAQ

Questions about transfer_nft

What does the transfer_nft tool do? +

Transfer an NFT (ERC721 token) from one address to another. It is categorised as a Write tool in the SEI MCP Server V2 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on transfer_nft? +

Register the SEI MCP Server V2 MCP server in PolicyLayer and add a rule for transfer_nft: 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 SEI MCP Server V2. Nothing to install.

What risk level is transfer_nft? +

transfer_nft is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit transfer_nft? +

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

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

transfer_nft is provided by the SEI MCP Server V2 MCP server (testinguser1111111/sei-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.