Delete a DICT key owned by the merchant. Irreversible — key becomes available for re-registration after BCB lockout window.
AI agents call delete_dict_key to permanently remove resources in Mcp Ap2 — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool irreversibly deletes a DICT (Direct Inward System Transfer) key owned by a merchant. DICT keys are critical authentication and authorization credentials used in payment systems. Deletion of such keys is an irreversible action that disables merchant access and cannot be undone except through a lockout window and re-registration process. This fits the Destructive category (irreversibly deletes data).
From the tool's definition Tool description explicitly states 'Delete a DICT key' and 'Irreversible' — this is permanent deletion of authentication/merchant credentials that cannot be undone within normal operations.
Documented attack patterns abuse exactly the kind of access delete_dict_key gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_dict_key:
{
"version": "1",
"default": "deny",
"hide": [
"delete_dict_key"
]
}delete_dict_key disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Delete a DICT key owned by the merchant. Irreversible — key becomes available for re-registration after BCB lockout window. It is categorised as a Destructive tool in the Mcp Ap2 MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for delete_dict_key: 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 Mcp Ap2. Nothing to install.
delete_dict_key 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 delete_dict_key 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 delete_dict_key. 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.
delete_dict_key is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
1300 Mcp Ap2 tools catalogued and risk-classified — across an index of 43,000+ MCP servers.