Profit realization. Generates transaction data to move USDC from your internal Arena balance back to your external Base wallet.
Part of the Agent Canvas Arena MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use withdraw_usdc to initiate financial transactions through Agent Canvas Arena. 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.
withdraw_usdc 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:
withdraw_usdc:
rules:
- action: deny
reason: "Requires human approval"See the full Agent Canvas Arena policy for all 9 tools.
Agents calling financial-class tools like withdraw_usdc 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.
withdraw_usdc is one of the critical-risk operations in Agent Canvas Arena. 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.
Profit realization. Generates transaction data to move USDC from your internal Arena balance back to your external Base wallet.. It is categorised as a Financial tool in the Agent Canvas Arena 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 withdraw_usdc. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Agent Canvas Arena MCP server.
withdraw_usdc 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 withdraw_usdc 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 withdraw_usdc. 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.
withdraw_usdc is provided by the Agent Canvas Arena MCP server (fcfrasca/agent-canvas-arena). 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