Transfer a specific coin type to another Aptos account. This is used for sending custom coins or tokens from your account to another address. Returns the transaction hash upon successful transfer.
Single-target operation
Part of the Aptos Blockchain Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use transfer_coin to initiate financial transactions through Aptos Blockchain Server. 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.
transfer_coin 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.
Financial tools involve real money. Block by default and require explicit human approval before enabling.
tools:
transfer_coin:
rules:
- action: deny
reason: "Requires human approval"See the full Aptos Blockchain Server policy for all 16 tools.
Agents calling financial-class tools like transfer_coin have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Financial risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.
transfer_coin is one of the critical-risk operations in Aptos Blockchain Server. 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.
Transfer a specific coin type to another Aptos account. This is used for sending custom coins or tokens from your account to another address. Returns the transaction hash upon successful transfer.. It is categorised as a Financial tool in the Aptos Blockchain Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Add a rule in your Intercept YAML policy under the tools section for transfer_coin. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Aptos Blockchain Server MCP server.
transfer_coin is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the transfer_coin 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.
Set action: deny in the Intercept policy for transfer_coin. 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.
transfer_coin is provided by the Aptos Blockchain Server MCP server (cuongpo/aptos-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept