cancel_all_orders
Cancel all pending orders. Requires a valid badge.
This record as markdown: /tools/a2a-demos/cancel-all-orders.md
What cancel_all_orders does on A2a Demos
AI agents call cancel_all_orders to permanently remove resources in A2a Demos, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why cancel_all_orders is rated Critical
This tool permanently cancels all pending orders without granular selection, representing a destructive operation with significant blast radius. While it requires a badge (access control mitigates risk somewhat), the action itself is irreversible and affects all pending orders at once. Not Financial because the tool doesn't move money or create obligations; it removes existing orders.
From the tool's definition Tool name is 'cancel_all_orders' and description states it 'Cancel all pending orders' — this is an irreversible bulk deletion/cancellation action that cannot be undone.
Attacks that exploit this kind of access
The rule that runs cancel_all_orders safely
PolicyLayer is an MCP gateway: it sits between your AI agents and A2a Demos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cancel_all_orders, this is the rule to start with:
cancel_all_orders is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect A2a Demos, apply this rule, and every cancel_all_orders call is checked against it from then on.
Questions about cancel_all_orders
Cancel all pending orders. Requires a valid badge. It is categorised as a Destructive tool in the A2a Demos MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the A2a Demos MCP server in PolicyLayer and add a rule for cancel_all_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 A2a Demos. Nothing to install.
cancel_all_orders is a Destructive 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_all_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.
Set action: deny in the PolicyLayer policy for cancel_all_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.
cancel_all_orders is provided by the A2a Demos MCP server (capiscio/a2a-demos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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