// MCP TOOL REFERENCE

transfer_tokens

Transfer SPL tokens between wallets

Moves tokens between wallets

Part of the Solana MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

// WHEN AI AGENTS USE THIS TOOL

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

// WHY ENFORCE A POLICY ON TRANSFER_TOKENS

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

// RECOMMENDED POLICY

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

io-github-expertvagabond-solana.yaml

tools:
  transfer_tokens:
    rules:
      - action: deny
        reason: "Requires human approval"

See the full Solana policy for all 25 tools.

// DETAILS

Tool Name transfer_tokens

Category Financial

MCP Server Solana MCP Server

Risk Level Critical

// MORE SOLANA TOOLS

Financial transfer_sol Destructive burn_tokens Destructive close_token_account Destructive revoke_delegate Write airdrop_sol Write approve_delegate Write create_spl_token Write create_token_account

View all 25 tools →

// WHAT CAN GO WRONG

Agents calling financial-class tools like transfer_tokens have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER FINANCIAL TOOLS ACROSS MCP SERVERS

Other tools in the Financial risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.

AbraFlexi bank_transaction_create AbraFlexi invoice_issued_create AgentPact agentpact.request_refund Wise cancel_transfer Wise create_transfer Wise fund_transfer

// IN CONTEXT OF CRITICAL RISK

transfer_tokens is one of the critical-risk operations in Solana. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.

// RELATED READING

// FAQ

What does the transfer_tokens tool do? +

Transfer SPL tokens between wallets. It is categorised as a Financial tool in the Solana MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on transfer_tokens? +

Add a rule in your Intercept YAML policy under the tools section for transfer_tokens. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Solana MCP server.

What risk level is transfer_tokens? +

transfer_tokens 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_tokens? +

Yes. Add a rate_limit block to the transfer_tokens rule in your Intercept 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_tokens completely? +

Set action: deny in the Intercept policy for transfer_tokens. 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_tokens? +

transfer_tokens is provided by the Solana MCP server (solana-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

transfer_tokens

Enforce policies on Solana