stop_preview_server
A execute tool on the Cocos MCP server.
This record as markdown: /tools/caravanglory-cocos-mcp-server/stop-preview-server.md
What stop_preview_server does on Cocos
AI agents invoke stop_preview_server to trigger actions in Cocos. 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 stop_preview_server is rated High
This tool executes an external operation (terminating the preview server process) whose effects depend on the current state of the editor environment. While not destructive (the preview state can be restarted), it is an Execute category action because it triggers an external operation that changes system state.
From the tool's definition Tool name 'stop_preview_server' combined with server description indicating direct control of Cocos Creator 3.8.x editor. Stopping a preview server is an operational action that terminates a running process/service.
Attacks that exploit this kind of access
The rule that runs stop_preview_server safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Cocos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stop_preview_server, this is the rule to start with:
stop_preview_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 Cocos, apply this rule, and every stop_preview_server call is checked against it from then on.
Questions about stop_preview_server
stop_preview_server is a execute tool on the Cocos MCP server. It is categorised as a Execute tool in the Cocos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Cocos MCP server in PolicyLayer and add a rule for stop_preview_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 Cocos. Nothing to install.
stop_preview_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 stop_preview_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 stop_preview_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.
stop_preview_server is provided by the Cocos MCP server (caravanglory/cocos-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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