schwab_cancel_all_stock_orders

THE RISK

Critical Risk

Why schwab_cancel_all_stock_orders needs a policy

Canceling all open orders is a destructive action that cannot be undone and has immediate financial consequences. An AI agent misusing this tool could liquidate a user's entire pending order queue, resulting in unexecuted trades, missed market opportunities, and significant financial harm.

From the tool's definition Tool name contains 'cancel_all' and description states 'Cancel all open equity orders' — this irreversibly terminates all pending stock orders without qualification or undo capability.

Documented attack patterns abuse exactly the kind of access schwab_cancel_all_stock_orders gives an agent:

POLICY

How to control schwab_cancel_all_stock_orders

PolicyLayer is an MCP gateway — it sits between your AI agents and Open Stocks MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for schwab_cancel_all_stock_orders:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "schwab_cancel_all_stock_orders"
  ]
}

schwab_cancel_all_stock_orders disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Open Stocks MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Open Stocks MCP tools

Financial schwab_order_sell_stop Place a stop sell order for stock. Financial sell_stock_stop_loss Places a stop loss sell order for a stock. Financial buy_option_limit Places a limit buy order for an option. Financial buy_stock_limit Places a limit buy order for a stock. Financial buy_stock_market Places a market buy order for a stock. Financial option_credit_spread option_credit_spread Financial option_debit_spread option_debit_spread Financial schwab_buy_stock_limit Place a limit buy order for stock.

All 152 Open Stocks MCP tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Open Stocks MCP → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about schwab_cancel_all_stock_orders

What does the schwab_cancel_all_stock_orders tool do? +

Cancel all open equity orders for a Schwab account. It is categorised as a Destructive tool in the Open Stocks MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on schwab_cancel_all_stock_orders? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for schwab_cancel_all_stock_orders: 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 Open Stocks MCP. Nothing to install.

What risk level is schwab_cancel_all_stock_orders? +

schwab_cancel_all_stock_orders is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit schwab_cancel_all_stock_orders? +

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

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

schwab_cancel_all_stock_orders is provided by the Open Stocks MCP server (open-agent-tools/open-stocks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Open Stocks MCP tool call.

Start from Open Stocks MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →