Atomically replace the entire rule list.
AI agents call replace_firewall_rules to permanently remove resources in Firegex — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Atomically replacing the entire rule list destroys all existing firewall rules and substitutes them with new ones. This is irreversible in the sense that the prior rule set is overwritten with no recovery mechanism implied. The blast radius is critical because misconfigured firewall rules could expose all protected services or block all legitimate traffic in a CTF/proxy firewall context.
From the tool's definition 'Atomically replace the entire rule list' — replaces ALL existing firewall rules irreversibly in a single operation
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Atomically replace the entire rule list. It is categorised as a Destructive tool in the Firegex MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Firegex MCP server in PolicyLayer and add a rule for replace_firewall_rules: 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 Firegex. Nothing to install.
replace_firewall_rules 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 replace_firewall_rules 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 replace_firewall_rules. 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.
replace_firewall_rules is provided by the Firegex MCP server (umbra2728/firegex-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →