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transfer_starknet_token

Transfer ERC20 tokens from one account to another

Part of the Starknet MCP Server server.

transfer_starknet_token can move real money through Starknet MCP Server, 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 transfer_starknet_token to initiate financial transactions through Starknet MCP Server. 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.

transfer_starknet_token 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": {
    "transfer_starknet_token": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

See the full Starknet MCP Server policy for all 25 tools.

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These attack patterns abuse exactly the kind of access transfer_starknet_token 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 transfer_starknet_token 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 transfer_starknet_token tool do? +

Transfer ERC20 tokens from one account to another. It is categorised as a Financial tool in the Starknet MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on transfer_starknet_token? +

Register the Starknet MCP Server MCP server in PolicyLayer and add a rule for transfer_starknet_token: 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 Starknet MCP Server. Nothing to install.

What risk level is transfer_starknet_token? +

transfer_starknet_token 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 transfer_starknet_token? +

Yes. Add a rate_limit block to the transfer_starknet_token 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_starknet_token completely? +

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

transfer_starknet_token is provided by the Starknet MCP Server MCP server (mcpdotdirect/starknet-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Starknet MCP Server tool call.

Deterministic rules across all 25 Starknet MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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