This record as markdown: /tools/kh0pper-crow/crow-activate-server.md
What crow_activate_server does on Crow
AI agents invoke crow_activate_server to trigger actions in Crow. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why crow_activate_server is rated High
Activating a server triggers an external operation with potentially broad system-level effects. In the context of a server managing P2P sharing, matrix federation, and 20+ integrations, activating a server could spin up services, open network ports, and enable data flows. This goes beyond a simple write/config change and constitutes executing an operational state change on infrastructure.
From the tool's definition 'Activate a server' — triggers an external operation on a server infrastructure component
Attacks that exploit this kind of access
The rule that runs crow_activate_server safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_activate_server, this is the rule to start with:
crow_activate_server stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every crow_activate_server call is checked against it from then on.
Questions about crow_activate_server
Activate a server. It is categorised as a Execute tool in the Crow MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Crow MCP server in PolicyLayer and add a rule for crow_activate_server: 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.
crow_activate_server is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the crow_activate_server 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 crow_activate_server. 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.
crow_activate_server 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.
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