AI agents use cancel_order to commit financial operations through Groww MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
The server description explicitly mentions canceling stock orders as a capability. Canceling an order on a trading platform is a financial operation that can affect active trades, potentially causing missed executions or altering financial positions. The empty description lowers confidence slightly, but the tool name and server context strongly indicate this is a financial action.
From the tool's definition Tool name 'cancel_order' on a trading platform server described as enabling users to 'place, modify, or cancel stock orders'
Documented attack patterns abuse exactly the kind of access cancel_order gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Groww MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for cancel_order:
{
"version": "1",
"default": "deny",
"tools": {
"cancel_order": {
"deny_if": [
{
"conditions": [],
"on_deny": "Requires human approval."
}
]
}
}
}Any call to cancel_order is blocked until a human approves it. The rest of the server keeps working.
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cancel_order. It is categorised as a Financial tool in the Groww MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Groww MCP Server MCP server in PolicyLayer and add a rule for cancel_order: 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 Groww MCP Server. Nothing to install.
cancel_order 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 cancel_order 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.
Set action: deny in the PolicyLayer policy for cancel_order. 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.
cancel_order is provided by the Groww MCP Server MCP server (venkatakaushikvemani/groww-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Groww MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 Groww MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.