Add a :8448 site block with its own Let
AI agents use caddy_add_matrix_federation_port to create or update resources in Crow — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Crow environment.
This tool creates a new Caddy site block configuration for Matrix federation on port 8448, which is a reversible modification of system configuration. It does not delete data (not Destructive), execute arbitrary code (not Execute), or handle financial operations (not Financial).
From the tool's definition Tool name 'caddy_add_matrix_federation_port' and description fragment 'Add a :8448 site block' indicate creation of a new network configuration entry. Description is incomplete ('its own Let' appears truncated), limiting full assessment.
Documented attack patterns abuse exactly the kind of access caddy_add_matrix_federation_port gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for caddy_add_matrix_federation_port:
{
"version": "1",
"default": "deny",
"tools": {
"caddy_add_matrix_federation_port": {
"limits": [
{
"counter": "caddy_add_matrix_federation_port_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}caddy_add_matrix_federation_port stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Add a :8448 site block with its own Let. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Crow MCP server in PolicyLayer and add a rule for caddy_add_matrix_federation_port: 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 Crow. Nothing to install.
caddy_add_matrix_federation_port is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the caddy_add_matrix_federation_port 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 caddy_add_matrix_federation_port. 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.
caddy_add_matrix_federation_port is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Crow, 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.
576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.